[cig-commits] commit: merge in Gale

Mercurial hg at geodynamics.org
Mon Feb 1 15:30:31 PST 2010


changeset:   237:e3370e45d52a
parent:      236:36fe68379dae
parent:      190:22e103ad775e
user:        Walter Landry <wlandry at caltech.edu>
date:        Tue Jan 19 13:40:59 2010 -0800
description:
merge in Gale


diff -r 36fe68379dae -r e3370e45d52a input/benchmarks/circular_inclusion/README
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/benchmarks/circular_inclusion/README	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,9 @@
+To check the results yourself, run the accompanying input file with 3 different resolutions:
+
+Gale circular_inclusion.xml --elementResI=128 --elementResJ=128 --outputPath=128
+
+Gale circular_inclusion.xml --elementResI=256 --elementResJ=256 --outputPath=256
+
+Gale circular_inclusion.xml --elementResI=512 --elementResJ=512 --outputPath=512
+
+You will probably need to run the last one on a parallel machine.
diff -r 36fe68379dae -r e3370e45d52a input/benchmarks/circular_inclusion/circular_inclusion.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/benchmarks/circular_inclusion/circular_inclusion.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,518 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">f</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="backgroundShape">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="inclusionShape">
+      <param name="Type">Sphere</param>
+      <param name="CentreX">0.0</param>
+      <param name="CentreY">0.0</param>
+      <param name="radius">0.1</param>
+    </struct>
+    <struct name="viscousShape">
+      <param name="Type">Intersection</param>
+      <list name="shapes">
+        <param>backgroundShape</param>
+        <param>!inclusionShape</param>
+      </list>
+    </struct>
+    <struct name="viscousViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">1.0</param>
+    </struct>
+    <struct name="inclusionViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">2</param>
+    </struct>
+    <struct name="viscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">viscousShape</param>
+      <list name="Rheology">
+        <param>viscousViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+    <struct name="inclusion">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">inclusionShape</param>
+      <list name="Rheology">
+        <param>inclusionViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+  </struct>
+  <param name="timeIntegratorOrder">1</param>
+  <param name="maxTimeSteps">1</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./output.circular_inclusion</param>
+  <param name="dim">2</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">1.0f</param>
+  <param name="maxY">1.0f</param>
+  <param name="maxZ">0.5f</param>
+  <param name="elementResI">64</param>
+  <param name="elementResJ">64</param>
+  <param name="elementResK">8</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">func</param>
+            <param name="value">Velocity_Extension</param>
+          </struct>
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">func</param>
+            <param name="value">Velocity_SimpleShear</param>
+          </struct>
+        </list>
+      </struct>
+
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">top</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">func</param>
+            <param name="value">Velocity_Extension</param>
+          </struct>
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">func</param>
+            <param name="value">Velocity_SimpleShear</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">bottom</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <param name="checkpointEvery">1</param>
+
+  <param name="SimpleShearFactor">1</param>
+  <param name="SimpleShearCentreY">0</param>
+  <param name="ExtensionFactor">-1</param>
+  <param name="ExtensionCentreX">0</param>
+  <param name="linearTolerance">1.0e-7</param>
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a input/benchmarks/divergence.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/benchmarks/divergence.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,570 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="conditionFunctions">
+      <param name="Type">StgFEM_StandardConditionFunctions</param>
+    </struct>
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">f</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+p    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="background">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+
+    <struct name="boxShape">
+      <param name="Type">Box</param>
+      <param name="startX">minX</param>
+      <param name="endX">maxX</param>
+      <param name="startY">minY</param>
+      <param name="endY">maxY</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+    <struct name="backgroundViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">1.0</param>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="viscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">boxShape</param>
+      <list name="Rheology">
+        <param>backgroundViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+    <struct name="chamberShape">
+      <param name="Type">Sphere</param>
+      <param name="radius">10.0</param>
+      <param name="CentreX">1.0</param>
+      <param name="CentreY">1.0</param>
+      <param name="CentreZ">1.0</param>
+    </struct>
+
+    <struct name="topLeftShape">
+      <param name="Type">Box</param>
+      <param name="startX">-0.01</param>
+      <param name="endX">0.01</param>
+      <param name="startY">1.99</param>
+      <param name="endY">2.01</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+
+    <struct name="topRightShape">
+      <param name="Type">Box</param>
+      <param name="startX">1.99</param>
+      <param name="endX">2.01</param>
+      <param name="startY">1.99</param>
+      <param name="endY">2.01</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+
+    <struct name="bottomLeftShape">
+      <param name="Type">Box</param>
+      <param name="startX">-0.01</param>
+      <param name="endX">0.01</param>
+      <param name="startY">-0.01</param>
+      <param name="endY">0.01</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+
+    <struct name="bottomRightShape">
+      <param name="Type">Box</param>
+      <param name="startX">1.99</param>
+      <param name="endX">2.01</param>
+      <param name="startY">-0.01</param>
+      <param name="endY">0.01</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+    
+      
+    <struct name="divergenceForce">
+      <param name="Type">DivergenceForce</param>
+      <param name="ForceVector">cont_force</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="DomainShape">chamberShape</param>
+      <param name="GeometryMesh">mesh-linear</param>
+      <param name="force_type">double</param>
+      <param name="force_value">-2</param>
+    </struct>
+
+
+
+  </struct>
+
+  <list name="FieldVariablesToCheckpoint">
+    <param>VelocityField</param>
+    <param>PressureField</param>
+  </list>
+  <param name="timeIntegratorOrder">1</param>
+  <param name="maxTimeSteps">1</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./output.divergence</param>
+  <param name="dim">2</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">2.0f</param>
+  <param name="maxY">2.0f</param>
+  <param name="maxZ">2.0f</param>
+  <param name="elementResI">16</param>
+  <param name="elementResJ">16</param>
+  <param name="elementResK">16</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+  <param name="particlesPerCell">30</param>
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">MeshShapeVC</param>
+        <param name="Shape">topLeftShape</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">-1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct>
+
+
+      <struct>
+        <param name="type">MeshShapeVC</param>
+        <param name="Shape">topRightShape</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct>
+
+      <struct>
+        <param name="type">MeshShapeVC</param>
+        <param name="Shape">bottomLeftShape</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">-1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">-1.0</param>
+          </struct>
+        </list>
+      </struct>
+
+      <struct>
+        <param name="type">MeshShapeVC</param>
+        <param name="Shape">bottomRightShape</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">-1.0</param>
+          </struct>
+        </list>
+      </struct>
+
+    </list>
+  </struct>
+
+  <param name="linearTolerance">1.0e-7</param>
+  <param name="checkpointEvery">1</param>
+  <param name="ExtensionFactor">1</param>
+  <param name="ExtensionCentreX">1</param>
+
+  <param name="SimpleShearFactor">1</param>
+  <param name="SimpleShearCentreY">1</param>
+
+ <param name="journal.info">True</param>
+ <param name="journal.debug">True</param>
+ <param name="journal-level.info">2</param>
+ <param name="journal-level.debug">2</param>
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a input/benchmarks/divergence3D.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/benchmarks/divergence3D.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,713 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="conditionFunctions">
+      <param name="Type">StgFEM_StandardConditionFunctions</param>
+    </struct>
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">f</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+p    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="background">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+
+    <struct name="boxShape">
+      <param name="Type">Box</param>
+      <param name="startX">minX</param>
+      <param name="endX">maxX</param>
+      <param name="startY">minY</param>
+      <param name="endY">maxY</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+    <struct name="backgroundViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">1.0</param>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="viscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">boxShape</param>
+      <list name="Rheology">
+        <param>backgroundViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+    <struct name="chamberShape">
+      <param name="Type">Sphere</param>
+      <param name="radius">10.0</param>
+      <param name="CentreX">1.0</param>
+      <param name="CentreY">1.0</param>
+      <param name="CentreZ">1.0</param>
+    </struct>
+
+    <struct name="topLeftFrontShape">
+      <param name="Type">Box</param>
+      <param name="startX">-0.01</param>
+      <param name="endX">0.01</param>
+      <param name="startY">1.99</param>
+      <param name="endY">2.01</param>
+      <param name="startZ">-0.01</param>
+      <param name="endZ">0.01</param>
+    </struct>
+
+    <struct name="topRightFrontShape">
+      <param name="Type">Box</param>
+      <param name="startX">1.99</param>
+      <param name="endX">2.01</param>
+      <param name="startY">1.99</param>
+      <param name="endY">2.01</param>
+      <param name="startZ">-0.01</param>
+      <param name="endZ">0.01</param>
+    </struct>
+
+    <struct name="bottomLeftFrontShape">
+      <param name="Type">Box</param>
+      <param name="startX">-0.01</param>
+      <param name="endX">0.01</param>
+      <param name="startY">-0.01</param>
+      <param name="endY">0.01</param>
+      <param name="startZ">-0.01</param>
+      <param name="endZ">0.01</param>
+    </struct>
+
+    <struct name="bottomRightFrontShape">
+      <param name="Type">Box</param>
+      <param name="startX">1.99</param>
+      <param name="endX">2.01</param>
+      <param name="startY">-0.01</param>
+      <param name="endY">0.01</param>
+      <param name="startZ">-0.01</param>
+      <param name="endZ">0.01</param>
+    </struct>
+
+
+
+    <struct name="topLeftBackShape">
+      <param name="Type">Box</param>
+      <param name="startX">-0.01</param>
+      <param name="endX">0.01</param>
+      <param name="startY">1.99</param>
+      <param name="endY">2.01</param>
+      <param name="startZ">1.99</param>
+      <param name="endZ">2.01</param>
+    </struct>
+
+    <struct name="topRightBackShape">
+      <param name="Type">Box</param>
+      <param name="startX">1.99</param>
+      <param name="endX">2.01</param>
+      <param name="startY">1.99</param>
+      <param name="endY">2.01</param>
+      <param name="startZ">1.99</param>
+      <param name="endZ">2.01</param>
+    </struct>
+
+    <struct name="bottomLeftBackShape">
+      <param name="Type">Box</param>
+      <param name="startX">-0.01</param>
+      <param name="endX">0.01</param>
+      <param name="startY">-0.01</param>
+      <param name="endY">0.01</param>
+      <param name="startZ">1.99</param>
+      <param name="endZ">2.01</param>
+    </struct>
+
+    <struct name="bottomRightBackShape">
+      <param name="Type">Box</param>
+      <param name="startX">1.99</param>
+      <param name="endX">2.01</param>
+      <param name="startY">-0.01</param>
+      <param name="endY">0.01</param>
+      <param name="startZ">1.99</param>
+      <param name="endZ">2.01</param>
+    </struct>
+    
+      
+    <struct name="divergenceForce">
+      <param name="Type">DivergenceForce</param>
+      <param name="ForceVector">cont_force</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="DomainShape">chamberShape</param>
+      <param name="GeometryMesh">mesh-linear</param>
+      <param name="force_type">double</param>
+      <param name="force_value">-3</param>
+    </struct>
+
+
+
+  </struct>
+
+  <list name="FieldVariablesToCheckpoint">
+    <param>VelocityField</param>
+    <param>PressureField</param>
+  </list>
+  <param name="timeIntegratorOrder">1</param>
+  <param name="maxTimeSteps">1</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./output.divergence3D</param>
+  <param name="dim">3</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">2.0f</param>
+  <param name="maxY">2.0f</param>
+  <param name="maxZ">2.0f</param>
+  <param name="elementResI">16</param>
+  <param name="elementResJ">16</param>
+  <param name="elementResK">16</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+  <param name="particlesPerCell">30</param>
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">MeshShapeVC</param>
+        <param name="Shape">topLeftFrontShape</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">-1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">-1.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">MeshShapeVC</param>
+        <param name="Shape">topRightFrontShape</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">-1.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">MeshShapeVC</param>
+        <param name="Shape">bottomLeftFrontShape</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">-1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">-1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">-1.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">MeshShapeVC</param>
+        <param name="Shape">bottomRightFrontShape</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">-1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">-1.0</param>
+          </struct>
+        </list>
+      </struct>
+
+      <struct>
+        <param name="type">MeshShapeVC</param>
+        <param name="Shape">topLeftBackShape</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">-1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">MeshShapeVC</param>
+        <param name="Shape">topRightBackShape</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">MeshShapeVC</param>
+        <param name="Shape">bottomLeftBackShape</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">-1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">-1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">MeshShapeVC</param>
+        <param name="Shape">bottomRightBackShape</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">-1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct>
+
+    </list>
+  </struct>
+
+  <param name="linearTolerance">1.0e-7</param>
+  <param name="checkpointEvery">1</param>
+  <param name="ExtensionFactor">1</param>
+  <param name="ExtensionCentreX">1</param>
+
+  <param name="SimpleShearFactor">1</param>
+  <param name="SimpleShearCentreY">1</param>
+
+ <param name="journal.info">True</param>
+ <param name="journal.debug">True</param>
+ <param name="journal-level.info">2</param>
+ <param name="journal-level.debug">2</param>
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a input/benchmarks/drucker_prager.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/benchmarks/drucker_prager.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,570 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">f</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMinIterations">nonLinearMinIterations</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="background">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+
+    <struct name="boxShape">
+      <param name="Type">Box</param>
+      <param name="startX">minX</param>
+      <param name="endX">maxX</param>
+      <param name="startY">minY</param>
+      <param name="endY">maxY</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+    <struct name="backgroundViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">1.0</param>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+
+    <struct name="sphereShape">
+      <param name="Type">Sphere</param>
+      <param name="CentreX">0.0</param>
+      <param name="CentreY">0.0</param>
+      <param name="radius">0.01</param>
+    </struct>
+
+    <struct name="sphereViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">0.0001</param>
+    </struct>
+
+    <struct name="sphereViscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">sphereShape</param>
+      <param name="density">density</param>
+      <list name="Rheology">
+        <param>sphereViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+    <struct name="nonSphereShape">
+      <param name="Type">Intersection</param>
+      <list name="shapes">
+        <param>boxShape</param>
+        <param>!sphereShape</param>
+      </list>
+    </struct>
+
+    <struct name="strainWeakening">
+      <param name="Type">StrainWeakening</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+      <param name="finalSofteningStrain">0.1</param>
+      <param name="initialDamageFraction">0.0</param>
+      <param name="initialDamageWavenumber">0.5</param>
+      <param name="initialDamageFactor">0.5</param>
+      <param name="healingRate">0.0</param>
+    </struct>
+    <struct name="yielding">
+      <param name="Type">DruckerPrager</param>
+      <param name="PressureField">PressureField</param>
+      <param name="VelocityGradientsField">VelocityGradientsField</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+      <param name="Context">context</param>
+      <param name="StrainWeakening">strainWeakening</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="cohesion">cohesion</param>
+      <param name="cohesionAfterSoftening">cohesionAfterSoftening</param>
+      <param name="frictionCoefficient">frictionCoefficient</param>
+      <param name="frictionCoefficientAfterSoftening">frictionCoefficient</param>
+    </struct>
+    <struct name="crust">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">nonSphereShape</param>
+      <param name="density">density</param>
+      <list name="Rheology">
+        <param>backgroundViscosity</param>
+        <param>yielding</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+  </struct>
+
+  <list name="FieldVariablesToCheckpoint">
+    <param>VelocityField</param>
+    <param>PressureField</param>
+  </list>
+  <param name="timeIntegratorOrder">1</param>
+  <param name="maxTimeSteps">1</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./drucker_prager</param>
+  <param name="dim">2</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">1.0f</param>
+  <param name="maxY">1.0f</param>
+  <param name="maxZ">0.3f</param>
+  <param name="elementResI">64</param>
+  <param name="elementResJ">64</param>
+  <param name="elementResK">4</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+  <param name="particlesPerCell">30</param>
+  <struct name="EulerDeform">
+    <list name="systems">
+      <struct>
+        <param name="mesh">mesh-linear</param>
+        <param name="remesher">velocityRemesher</param>
+        <param name="velocityField">VelocityField</param>
+        <param name="wrapTop">True</param>
+        <list name="fields">
+          <struct>
+            <param name="field">VelocityField</param>
+            <param name="variable">velocity</param>
+          </struct>
+          <struct>
+            <param name="field">PressureField</param>
+            <param name="variable">pressure</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">-1.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">bottom</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <param name="nonLinearTolerance">1.0e-3</param>
+  <param name="linearTolerance">1.0e-7</param>
+  <param name="nonLinearMinIterations">100</param>
+
+  <param name="cohesion">1.0e-6</param>
+  <param name="cohesionAfterSoftening">1.0e-10</param>
+  <param name="frictionCoefficient">1.0</param>
+  <param name="density">1.0</param>
+
+  <param name="journal.info">True</param>
+  <param name="journal.debug">True</param>
+  <param name="journal-level.info">2</param>
+  <param name="journal-level.debug">2</param>
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a input/benchmarks/falling_sphere/README
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/benchmarks/falling_sphere/README	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,7 @@
+To run the three testcases
+
+  Gale sphere_in_cylinder.xml --elementResI=16 --elementResJ=32 --elementResK=16 --outputPath="./sphere_cylinder_32_4_8"
+
+  Gale sphere_in_cylinder.xml --elementResI=32 --elementResJ=64 --elementResK=32 --outputPath="./sphere_cylinder_64_4_8"
+
+  Gale sphere_in_cylinder.xml --elementResI=32 --elementResJ=128 --elementResK=64 --outputPath="./sphere_cylinder_128_4_8"
diff -r 36fe68379dae -r e3370e45d52a input/benchmarks/falling_sphere/sphere_in_cylinder.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/benchmarks/falling_sphere/sphere_in_cylinder.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,568 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">f</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="buoyancyForceTerm">
+      <param name="Type">BuoyancyForceTerm</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="gravity">1</param>
+    </struct>
+    <struct name="background">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+    <struct name="boxShape">
+      <param name="Type">Box</param>
+      <param name="startX">minX</param>
+      <param name="endX">maxX</param>
+      <param name="startY">minY</param>
+      <param name="endY">maxY</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+    <struct name="backgroundViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">1</param>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="layer1">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">boxShape</param>
+      <param name="density">0</param>
+      <list name="Rheology">
+        <param>backgroundViscosity</param>
+        <param>storeViscosity</param>
+      </list>
+    </struct>
+    <struct name="kugel">
+      <param name="Type">Sphere</param>
+      <param name="CentreX">centreX</param>
+      <param name="CentreY">centreY</param>
+      <param name="CentreZ">centreZ</param>
+      <param name="radius">1.0</param>
+    </struct>
+    <struct name="kugelViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">100</param>
+    </struct>
+    <struct name="kugelViscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">kugel</param>
+      <param name="density">0.01</param>
+      <list name="Rheology">
+        <param>kugelViscosity</param>
+        <param>storeViscosity</param>
+      </list>
+    </struct>
+    <struct name="nonkugel">
+      <param name="Type">Intersection</param>
+      <list name="shapes">
+        <param>boxShape</param>
+        <param>!kugel</param>
+      </list>
+    </struct>
+
+    <!-- A shape for the interior of the cylinder -->
+    <struct name="cylinderShape">
+      <param name="Type">Cylinder</param>
+      <param name="CentreX">0.0</param>
+      <param name="CentreZ">0.0</param>
+      <param name="radius">maxX</param>
+      <param name="perpendicularAxis">y</param>
+    </struct>
+
+    <!-- A shape for the exterior, where everything needs to be fixed. -->
+    <struct name="nonCylinderShape">
+      <param name="Type">Intersection</param>
+      <list name="shapes">
+        <param>boxShape</param>
+        <param>!cylinderShape</param>
+      </list>
+    </struct>
+  </struct>
+  <list name="plugins">
+    <param>Underworld_VTKOutput</param>
+  </list>
+  <param name="timeIntegratorOrder">1</param>
+  <param name="maxTimeSteps">1</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./output.sphere</param>
+  <param name="dim">3</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">4</param>
+  <param name="maxY">8</param>
+  <param name="maxZ">4</param>
+  <param name="elementResI">16</param>
+  <param name="elementResJ">32</param>
+  <param name="elementResK">16</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">top</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">bottom</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+
+      <!-- Fix everything outside of the cylinder -->
+      <struct>
+        <param name="type">MeshShapeVC</param>
+        <param name="Shape">nonCylinderShape</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+
+    </list>
+  </struct>
+  <param name="linearTolerance">1.0e-7</param>
+  <param name="centreX">0.0</param>
+  <param name="centreY">4.0</param>
+  <param name="centreZ">0.0</param>
+  <param name="journal.info">True</param>
+  <param name="journal.debug">True</param>
+  <param name="journal-level.info">2</param>
+  <param name="journal-level.debug">2</param>
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a input/benchmarks/sinusoid.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/benchmarks/sinusoid.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,502 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">f</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="buoyancyForceTerm">
+      <param name="Type">BuoyancyForceTerm</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="gravity">gravity</param>
+    </struct>
+    <struct name="background">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="pdmsViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">1.0</param>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="pdms">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">background</param>
+      <param name="density">1.0</param>
+      <list name="Rheology">
+        <param>pdmsViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+    <struct name="surfaceAdaptor">
+      <param name="Type">SurfaceAdaptor</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="sourceGenerator">linearMesh-generator</param>
+      <param name="surfaceType">cosine</param>
+      <list name="origin">
+        <param>0.0</param>
+      </list>
+      <param name="amplitude">0.01</param>
+      <param name="frequency">6.28318530718</param>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+  </struct>
+  <param name="maxTimeSteps">50</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./output.sinusoid</param>
+  <param name="dim">2</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">0.5f</param>
+  <param name="maxY">1.0f</param>
+  <param name="maxZ">0.3f</param>
+  <param name="elementResI">32</param>
+  <param name="elementResJ">16</param>
+  <param name="elementResK">3</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+  <param name="particlesPerCell">30</param>
+  <struct name="EulerDeform">
+    <list name="systems">
+      <struct>
+        <param name="mesh">mesh-linear</param>
+        <param name="remesher">velocityRemesher</param>
+        <param name="velocityField">VelocityField</param>
+        <param name="wrapTop">True</param>
+        <list name="fields">
+          <struct>
+            <param name="field">VelocityField</param>
+            <param name="variable">velocity</param>
+          </struct>
+          <struct>
+            <param name="field">PressureField</param>
+            <param name="variable">pressure</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">bottom</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <param name="gravity">1.</param>
+  <param name="linearTolerance">1.0e-5</param>
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a input/cookbook/hydrostatic.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/cookbook/hydrostatic.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,523 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">f</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="hydrostaticTerm">
+      <param name="Type">HydrostaticTerm</param>
+      <param name="upperDensity">1</param>
+      <param name="height">maxY</param>
+      <param name="gravity">gravity</param>
+    </struct>
+    <struct name="stressBC">
+      <param name="Type">StressBC</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="wall">top</param>
+      <param name="y_type">HydrostaticTerm</param>
+      <param name="y_value">hydrostaticTerm</param>
+    </struct>
+    <struct name="buoyancyForceTerm">
+      <param name="Type">BuoyancyForceTerm</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="gravity">gravity</param>
+      <param name="HydrostaticTerm">hydrostaticTerm</param>
+    </struct>
+    <struct name="background">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+
+    <struct name="boxShape">
+      <param name="Type">Box</param>
+      <param name="startX">minX</param>
+      <param name="endX">maxX</param>
+      <param name="startY">minY</param>
+      <param name="endY">maxY</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+    <struct name="backgroundViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">1.0</param>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="viscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">boxShape</param>
+      <param name="density">1.0</param>
+      <list name="Rheology">
+        <param>backgroundViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+  </struct>
+
+  <list name="FieldVariablesToCheckpoint">
+    <param>VelocityField</param>
+    <param>PressureField</param>
+  </list>
+  <param name="timeIntegratorOrder">1</param>
+  <param name="maxTimeSteps">10</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./output</param>
+  <param name="dim">2</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">2.0f</param>
+  <param name="maxY">0.35f</param>
+  <param name="maxZ">0.3f</param>
+  <param name="elementResI">32</param>
+  <param name="elementResJ">16</param>
+  <param name="elementResK">4</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+  <param name="particlesPerCell">30</param>
+  <struct name="EulerDeform">
+    <list name="systems">
+      <struct>
+        <param name="mesh">mesh-linear</param>
+        <param name="remesher">velocityRemesher</param>
+        <param name="velocityField">VelocityField</param>
+        <param name="wrapTop">True</param>
+        <list name="fields">
+          <struct>
+            <param name="field">VelocityField</param>
+            <param name="variable">velocity</param>
+          </struct>
+          <struct>
+            <param name="field">PressureField</param>
+            <param name="variable">pressure</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">bottom</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <param name="checkpointEvery">1</param>
+  <param name="gravity">1.0</param>
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a input/cookbook/multi_material.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/cookbook/multi_material.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,539 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">f</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="buoyancyForceTerm">
+      <param name="Type">BuoyancyForceTerm</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="gravity">gravity</param>
+    </struct>
+    <struct name="background">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+
+    <struct name="boxShape">
+      <param name="Type">Box</param>
+      <param name="startX">minX</param>
+      <param name="endX">maxX</param>
+      <param name="startY">minY</param>
+      <param name="endY">maxY</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+    <struct name="backgroundViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">1.0</param>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+
+    <struct name="sphereShape">
+      <param name="Type">Sphere</param>
+      <param name="CentreX">1.0</param>
+      <param name="CentreY">0.15</param>
+      <param name="radius">0.1</param>
+    </struct>
+
+    <struct name="nonSphereShape">
+      <param name="Type">Intersection</param>
+      <list name="shapes">
+        <param>boxShape</param>
+        <param>!sphereShape</param>
+      </list>
+    </struct>
+
+    <struct name="viscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">nonSphereShape</param>
+      <param name="density">1.0</param>
+      <list name="Rheology">
+        <param>backgroundViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+    <struct name="sphereViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">10.0</param>
+    </struct>
+
+    <struct name="sphereViscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">sphereShape</param>
+      <param name="density">1.0</param>
+      <list name="Rheology">
+        <param>sphereViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+  </struct>
+  <list name="FieldVariablesToCheckpoint">
+    <param>VelocityField</param>
+    <param>PressureField</param>
+  </list>
+  <param name="timeIntegratorOrder">1</param>
+  <param name="maxTimeSteps">10</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./output</param>
+  <param name="dim">2</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">2.0f</param>
+  <param name="maxY">0.35f</param>
+  <param name="maxZ">0.3f</param>
+  <param name="elementResI">32</param>
+  <param name="elementResJ">16</param>
+  <param name="elementResK">4</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+  <param name="particlesPerCell">30</param>
+  <struct name="EulerDeform">
+    <list name="systems">
+      <struct>
+        <param name="mesh">mesh-linear</param>
+        <param name="remesher">velocityRemesher</param>
+        <param name="velocityField">VelocityField</param>
+        <param name="wrapTop">True</param>
+        <list name="fields">
+          <struct>
+            <param name="field">VelocityField</param>
+            <param name="variable">velocity</param>
+          </struct>
+          <struct>
+            <param name="field">PressureField</param>
+            <param name="variable">pressure</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">bottom</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <param name="checkpointEvery">1</param>
+  <param name="gravity">1.0</param>
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a input/cookbook/non_newtonian.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/cookbook/non_newtonian.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,734 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">f</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="buoyancyForceTerm">
+      <param name="Type">BuoyancyForceTerm</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="TemperatureField">TemperatureField</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="gravity">gravity</param>
+    </struct>
+    <struct name="background">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+
+    <struct name="boxShape">
+      <param name="Type">Box</param>
+      <param name="startX">minX</param>
+      <param name="endX">maxX</param>
+      <param name="startY">minY</param>
+      <param name="endY">maxY</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+    <struct name="backgroundViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">1.0</param>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+
+    <struct name="sphereShape">
+      <param name="Type">Sphere</param>
+      <param name="CentreX">1.0</param>
+      <param name="CentreY">0.15</param>
+      <param name="radius">0.1</param>
+    </struct>
+
+    <struct name="nonSphereShape">
+      <param name="Type">Intersection</param>
+      <list name="shapes">
+        <param>boxShape</param>
+        <param>!sphereShape</param>
+      </list>
+    </struct>
+
+    <struct name="nonNewtonian">
+      <param name="Type">NonNewtonian</param>
+      <param name="StrainRateInvariantField">StrainRateInvariantField</param>
+      <param name="TemperatureField">TemperatureField</param>
+      <param name="n">3.4</param>
+      <param name="T_0">1.0</param>
+      <param name="A">1.0</param>
+      <param name="refStrainRate">0.01</param>
+    </struct>
+
+    <struct name="viscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">nonSphereShape</param>
+      <param name="density">1.0</param>
+      <param name="alpha">1.0</param>
+      <param name="diffusivity">1.0</param>
+      <list name="heatingElements">
+        <struct>
+          <param name="Q">1.0</param>
+          <param name="lambda">1.0</param>
+        </struct>
+      </list>
+      <list name="Rheology">
+        <param>nonNewtonian</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+    <struct name="sphereViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">10.0</param>
+    </struct>
+
+    <struct name="sphereViscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">sphereShape</param>
+      <param name="density">1.0</param>
+      <param name="alpha">10.0</param>
+      <param name="diffusivity">10.0</param>
+      <list name="heatingElements">
+        <struct>
+          <param name="Q">1000.0</param>
+          <param name="lambda">10.0</param>
+        </struct>
+      </list>
+      <list name="Rheology">
+        <param>sphereViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+
+    <!-- Temperature components -->
+    <struct name="temperature">
+      <param name="Type">MeshVariable</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="temperatureBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="temperatureICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="temperatureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>temperature</param>
+      </list>
+    </struct>
+    <struct name="TemperatureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">temperatureDofLayout</param>
+      <param name="BC">temperatureBCs</param>
+      <param name="IC">temperatureICs</param>
+      <param name="LinkedDofInfo">temperatureLinkedDofs</param>
+    </struct>
+    <struct name="TemperatureGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">TemperatureField</param>
+    </struct>
+
+    <!-- Energy Equation -->
+
+    <struct name="residual">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">TemperatureField</param>
+    </struct>
+    <struct name="massMatrix">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">TemperatureField</param>
+    </struct>
+    <struct name="predictorMulticorrector">
+      <param name="Type">AdvDiffMulticorrector</param>
+    </struct>
+    <struct name="EnergyEqn">
+      <param name="Type">AdvectionDiffusionSLE</param>
+      <param name="SLE_Solver">predictorMulticorrector</param>
+      <param name="Context">context</param>
+      <param name="PhiField">TemperatureField</param>
+      <param name="Residual">residual</param>
+      <param name="MassMatrix">massMatrix</param>
+      <param name="courantFactor">0.25</param>
+    </struct>
+    <struct name="lumpedMassMatrixForceTerm">
+      <param name="Type">LumpedMassMatrixForceTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="ForceVector">massMatrix</param>
+    </struct>
+    <struct name="defaultResidualForceTerm">
+      <param name="Type">AdvDiffResidualForceTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="ForceVector">residual</param>
+      <param name="ExtraInfo">EnergyEqn</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="defaultDiffusivity">defaultDiffusivity</param>
+      <param name="UpwindXiFunction">Exact</param>
+    </struct>
+    <struct name="internalHeatingTerm">
+      <param name="Type">RadiogenicHeatingTerm</param>
+      <param name="ForceVector">residual</param>
+      <param name="Swarm">picIntegrationPoints</param>
+    </struct>	
+
+
+  </struct>
+  <list name="FieldVariablesToCheckpoint">
+    <param>VelocityField</param>
+    <param>PressureField</param>
+  </list>
+  <param name="timeIntegratorOrder">1</param>
+  <param name="maxTimeSteps">10</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./output</param>
+  <param name="dim">2</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">2.0f</param>
+  <param name="maxY">0.35f</param>
+  <param name="maxZ">0.3f</param>
+  <param name="elementResI">32</param>
+  <param name="elementResJ">16</param>
+  <param name="elementResK">4</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+  <param name="particlesPerCell">30</param>
+  <struct name="EulerDeform">
+    <list name="systems">
+      <struct>
+        <param name="mesh">mesh-linear</param>
+        <param name="remesher">velocityRemesher</param>
+        <param name="velocityField">VelocityField</param>
+        <param name="wrapTop">True</param>
+        <list name="fields">
+          <struct>
+            <param name="field">VelocityField</param>
+            <param name="variable">velocity</param>
+          </struct>
+          <struct>
+            <param name="field">PressureField</param>
+            <param name="variable">pressure</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.01</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">bottom</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+
+  <struct name="temperatureBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">bottom</param>
+        <list name="variables">
+          <struct>
+            <param name="name">temperature</param>
+            <param name="type">double</param>
+            <param name="value">2.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">temperature</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">temperature</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">top</param>
+        <list name="variables">
+          <struct>
+            <param name="name">temperature</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">temperature</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct> 
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">temperature</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct> 
+    </list>
+  </struct>
+  
+  <struct name="temperatureICs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">AllNodesVC</param>
+        <list name="variables">
+          <struct>
+            <param name="name">temperature</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct> 
+    </list>
+  </struct>
+  <param name="checkpointEvery">1</param>
+  <param name="gravity">1.0</param>
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a input/cookbook/template.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/cookbook/template.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,483 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">f</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="buoyancyForceTerm">
+      <param name="Type">BuoyancyForceTerm</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="gravity">gravity</param>
+    </struct>
+    <struct name="background">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+  </struct>
+
+  <list name="FieldVariablesToCheckpoint">
+    <param>VelocityField</param>
+    <param>PressureField</param>
+  </list>
+  <param name="timeIntegratorOrder">1</param>
+  <param name="maxTimeSteps">10</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./output</param>
+  <param name="dim">2</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">2.0f</param>
+  <param name="maxY">0.35f</param>
+  <param name="maxZ">0.3f</param>
+  <param name="elementResI">32</param>
+  <param name="elementResJ">16</param>
+  <param name="elementResK">4</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+  <param name="particlesPerCell">30</param>
+  <struct name="EulerDeform">
+    <list name="systems">
+      <struct>
+        <param name="mesh">mesh-linear</param>
+        <param name="remesher">velocityRemesher</param>
+        <param name="velocityField">VelocityField</param>
+        <param name="wrapTop">True</param>
+        <list name="fields">
+          <struct>
+            <param name="field">VelocityField</param>
+            <param name="variable">velocity</param>
+          </struct>
+          <struct>
+            <param name="field">PressureField</param>
+            <param name="variable">pressure</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">bottom</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <param name="checkpointEvery">1</param>
+  <param name="gravity">1.0</param>
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a input/cookbook/test.topo
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/cookbook/test.topo	Tue Jan 19 13:40:59 2010 -0800
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diff -r 36fe68379dae -r e3370e45d52a input/cookbook/thermal.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/cookbook/thermal.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,724 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">f</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="buoyancyForceTerm">
+      <param name="Type">BuoyancyForceTerm</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="TemperatureField">TemperatureField</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="gravity">gravity</param>
+    </struct>
+    <struct name="background">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+
+    <struct name="boxShape">
+      <param name="Type">Box</param>
+      <param name="startX">minX</param>
+      <param name="endX">maxX</param>
+      <param name="startY">minY</param>
+      <param name="endY">maxY</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+    <struct name="backgroundViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">1.0</param>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+
+    <struct name="sphereShape">
+      <param name="Type">Sphere</param>
+      <param name="CentreX">1.0</param>
+      <param name="CentreY">0.15</param>
+      <param name="radius">0.1</param>
+    </struct>
+
+    <struct name="nonSphereShape">
+      <param name="Type">Intersection</param>
+      <list name="shapes">
+        <param>boxShape</param>
+        <param>!sphereShape</param>
+      </list>
+    </struct>
+
+    <struct name="viscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">nonSphereShape</param>
+      <param name="density">1.0</param>
+      <param name="alpha">1.0</param>
+      <param name="diffusivity">1.0</param>
+      <list name="heatingElements">
+        <struct>
+          <param name="Q">1.0</param>
+          <param name="lambda">1.0</param>
+        </struct>
+      </list>
+      <list name="Rheology">
+        <param>backgroundViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+    <struct name="sphereViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">10.0</param>
+    </struct>
+
+    <struct name="sphereViscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">sphereShape</param>
+      <param name="density">1.0</param>
+      <param name="alpha">10.0</param>
+      <param name="diffusivity">10.0</param>
+      <list name="heatingElements">
+        <struct>
+          <param name="Q">1000.0</param>
+          <param name="lambda">10.0</param>
+        </struct>
+      </list>
+      <list name="Rheology">
+        <param>sphereViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+
+    <!-- Temperature components -->
+    <struct name="temperature">
+      <param name="Type">MeshVariable</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="temperatureBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="temperatureICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="temperatureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>temperature</param>
+      </list>
+    </struct>
+    <struct name="TemperatureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">temperatureDofLayout</param>
+      <param name="BC">temperatureBCs</param>
+      <param name="IC">temperatureICs</param>
+      <param name="LinkedDofInfo">temperatureLinkedDofs</param>
+    </struct>
+    <struct name="TemperatureGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">TemperatureField</param>
+    </struct>
+
+    <!-- Energy Equation -->
+
+    <struct name="residual">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">TemperatureField</param>
+    </struct>
+    <struct name="massMatrix">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">TemperatureField</param>
+    </struct>
+    <struct name="predictorMulticorrector">
+      <param name="Type">AdvDiffMulticorrector</param>
+    </struct>
+    <struct name="EnergyEqn">
+      <param name="Type">AdvectionDiffusionSLE</param>
+      <param name="SLE_Solver">predictorMulticorrector</param>
+      <param name="Context">context</param>
+      <param name="PhiField">TemperatureField</param>
+      <param name="Residual">residual</param>
+      <param name="MassMatrix">massMatrix</param>
+      <param name="courantFactor">0.25</param>
+    </struct>
+    <struct name="lumpedMassMatrixForceTerm">
+      <param name="Type">LumpedMassMatrixForceTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="ForceVector">massMatrix</param>
+    </struct>
+    <struct name="defaultResidualForceTerm">
+      <param name="Type">AdvDiffResidualForceTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="ForceVector">residual</param>
+      <param name="ExtraInfo">EnergyEqn</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="defaultDiffusivity">defaultDiffusivity</param>
+      <param name="UpwindXiFunction">Exact</param>
+    </struct>
+    <struct name="internalHeatingTerm">
+      <param name="Type">RadiogenicHeatingTerm</param>
+      <param name="ForceVector">residual</param>
+      <param name="Swarm">picIntegrationPoints</param>
+    </struct>	
+
+
+  </struct>
+  <list name="FieldVariablesToCheckpoint">
+    <param>VelocityField</param>
+    <param>PressureField</param>
+  </list>
+  <param name="timeIntegratorOrder">1</param>
+  <param name="maxTimeSteps">10</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./output</param>
+  <param name="dim">2</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">2.0f</param>
+  <param name="maxY">0.35f</param>
+  <param name="maxZ">0.3f</param>
+  <param name="elementResI">32</param>
+  <param name="elementResJ">16</param>
+  <param name="elementResK">4</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+  <param name="particlesPerCell">30</param>
+  <struct name="EulerDeform">
+    <list name="systems">
+      <struct>
+        <param name="mesh">mesh-linear</param>
+        <param name="remesher">velocityRemesher</param>
+        <param name="velocityField">VelocityField</param>
+        <param name="wrapTop">True</param>
+        <list name="fields">
+          <struct>
+            <param name="field">VelocityField</param>
+            <param name="variable">velocity</param>
+          </struct>
+          <struct>
+            <param name="field">PressureField</param>
+            <param name="variable">pressure</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.01</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">bottom</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+
+  <struct name="temperatureBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">bottom</param>
+        <list name="variables">
+          <struct>
+            <param name="name">temperature</param>
+            <param name="type">double</param>
+            <param name="value">2.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">temperature</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">temperature</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">top</param>
+        <list name="variables">
+          <struct>
+            <param name="name">temperature</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">temperature</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct> 
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">temperature</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct> 
+    </list>
+  </struct>
+  
+  <struct name="temperatureICs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">AllNodesVC</param>
+        <list name="variables">
+          <struct>
+            <param name="name">temperature</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct> 
+    </list>
+  </struct>
+  <param name="checkpointEvery">1</param>
+  <param name="gravity">1.0</param>
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a input/cookbook/viscous.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/cookbook/viscous.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,508 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">f</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="buoyancyForceTerm">
+      <param name="Type">BuoyancyForceTerm</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="gravity">gravity</param>
+    </struct>
+    <struct name="background">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+
+    <struct name="boxShape">
+      <param name="Type">Box</param>
+      <param name="startX">minX</param>
+      <param name="endX">maxX</param>
+      <param name="startY">minY</param>
+      <param name="endY">maxY</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+    <struct name="backgroundViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">1.0</param>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="viscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">boxShape</param>
+      <param name="density">1.0</param>
+      <list name="Rheology">
+        <param>backgroundViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+  </struct>
+
+  <list name="FieldVariablesToCheckpoint">
+    <param>VelocityField</param>
+    <param>PressureField</param>
+  </list>
+  <param name="timeIntegratorOrder">1</param>
+  <param name="maxTimeSteps">10</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./output</param>
+  <param name="dim">2</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">2.0f</param>
+  <param name="maxY">0.35f</param>
+  <param name="maxZ">0.3f</param>
+  <param name="elementResI">32</param>
+  <param name="elementResJ">16</param>
+  <param name="elementResK">4</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+  <param name="particlesPerCell">30</param>
+  <struct name="EulerDeform">
+    <list name="systems">
+      <struct>
+        <param name="mesh">mesh-linear</param>
+        <param name="remesher">velocityRemesher</param>
+        <param name="velocityField">VelocityField</param>
+        <param name="wrapTop">True</param>
+        <list name="fields">
+          <struct>
+            <param name="field">VelocityField</param>
+            <param name="variable">velocity</param>
+          </struct>
+          <struct>
+            <param name="field">PressureField</param>
+            <param name="variable">pressure</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">bottom</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <param name="checkpointEvery">1</param>
+  <param name="gravity">1.0</param>
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a input/cookbook/viscous_extension.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/cookbook/viscous_extension.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,508 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">f</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="buoyancyForceTerm">
+      <param name="Type">BuoyancyForceTerm</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="gravity">gravity</param>
+    </struct>
+    <struct name="background">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+
+    <struct name="boxShape">
+      <param name="Type">Box</param>
+      <param name="startX">minX</param>
+      <param name="endX">maxX</param>
+      <param name="startY">minY</param>
+      <param name="endY">maxY</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+    <struct name="backgroundViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">1.0</param>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="viscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">boxShape</param>
+      <param name="density">1.0</param>
+      <list name="Rheology">
+        <param>backgroundViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+  </struct>
+
+  <list name="FieldVariablesToCheckpoint">
+    <param>VelocityField</param>
+    <param>PressureField</param>
+  </list>
+  <param name="timeIntegratorOrder">1</param>
+  <param name="maxTimeSteps">10</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./output</param>
+  <param name="dim">2</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">2.0f</param>
+  <param name="maxY">0.35f</param>
+  <param name="maxZ">0.3f</param>
+  <param name="elementResI">32</param>
+  <param name="elementResJ">16</param>
+  <param name="elementResK">4</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+  <param name="particlesPerCell">30</param>
+  <struct name="EulerDeform">
+    <list name="systems">
+      <struct>
+        <param name="mesh">mesh-linear</param>
+        <param name="remesher">velocityRemesher</param>
+        <param name="velocityField">VelocityField</param>
+        <param name="wrapTop">True</param>
+        <list name="fields">
+          <struct>
+            <param name="field">VelocityField</param>
+            <param name="variable">velocity</param>
+          </struct>
+          <struct>
+            <param name="field">PressureField</param>
+            <param name="variable">pressure</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">bottom</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <param name="checkpointEvery">1</param>
+  <param name="gravity">1.0</param>
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a input/cookbook/viscous_extension3D.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/cookbook/viscous_extension3D.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,532 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">f</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="buoyancyForceTerm">
+      <param name="Type">BuoyancyForceTerm</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="gravity">gravity</param>
+    </struct>
+    <struct name="background">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+
+    <struct name="backgroundShape">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="backgroundViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">1.0</param>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="viscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">backgroundShape</param>
+      <param name="density">1.0</param>
+      <list name="Rheology">
+        <param>backgroundViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+    <!-- <struct name="surfaceAdaptor"> -->
+    <!--   <param name="Type">SurfaceAdaptor</param> -->
+    <!--   <param name="mesh">mesh-linear</param> -->
+    <!--   <param name="sourceGenerator">linearMesh-generator</param> -->
+    <!--   <param name="surfaceType">plateau</param> -->
+    <!--   <param name="x1">0.0</param> -->
+    <!--   <param name="x2">0.3</param> -->
+    <!--   <param name="x3">1.7</param> -->
+    <!--   <param name="x4">2.0</param> -->
+    <!--   <param name="z1">0</param> -->
+    <!--   <param name="z2">0.1</param> -->
+    <!--   <param name="z3">0.2</param> -->
+    <!--   <param name="z4">0.3</param> -->
+    <!--   <param name="height">0.1</param> -->
+    <!-- </struct> -->
+
+    <struct name="surfaceAdaptor">
+      <param name="Type">SurfaceAdaptor</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="sourceGenerator">linearMesh-generator</param>
+      <param name="surfaceType">topo_data</param>
+      <param name="surfaceName">input/cookbook/test.topo</param>
+      <param name="nx">32</param>
+      <param name="nz">12</param>
+      <param name="minX">minX</param>
+      <param name="maxX">maxX</param>
+      <param name="minZ">minZ</param>
+      <param name="maxZ">maxZ</param>
+    </struct>
+
+  </struct>
+
+  <list name="FieldVariablesToCheckpoint">
+    <param>VelocityField</param>
+    <param>PressureField</param>
+  </list>
+  <param name="timeIntegratorOrder">1</param>
+  <param name="maxTimeSteps">10</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./output</param>
+  <param name="dim">3</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">2.0f</param>
+  <param name="maxY">0.35f</param>
+  <param name="maxZ">0.3</param>
+  <param name="elementResI">16</param>
+  <param name="elementResJ">8</param>
+  <param name="elementResK">8</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+  <param name="particlesPerCell">30</param>
+  <struct name="EulerDeform">
+    <list name="systems">
+      <struct>
+        <param name="mesh">mesh-linear</param>
+        <param name="remesher">velocityRemesher</param>
+        <param name="velocityField">VelocityField</param>
+        <param name="wrapTop">True</param>
+        <list name="fields">
+          <struct>
+            <param name="field">VelocityField</param>
+            <param name="variable">velocity</param>
+          </struct>
+          <struct>
+            <param name="field">PressureField</param>
+            <param name="variable">pressure</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">bottom</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <param name="checkpointEvery">1</param>
+  <param name="gravity">1.0</param>
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a input/cookbook/viscous_fixed.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/cookbook/viscous_fixed.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,564 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">f</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="buoyancyForceTerm">
+      <param name="Type">BuoyancyForceTerm</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="gravity">gravity</param>
+    </struct>
+    <struct name="background">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+
+    <struct name="boxShape">
+      <param name="Type">Box</param>
+      <param name="startX">minX</param>
+      <param name="endX">maxX</param>
+      <param name="startY">minY</param>
+      <param name="endY">maxY</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+    <struct name="leftBoundaryShape">
+      <param name="Type">Box</param>
+      <param name="startX">minX</param>
+      <param name="endX">0.1</param>
+      <param name="startY">minY</param>
+      <param name="endY">maxY</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+    <struct name="fixedShape">
+      <param name="Type">Box</param>
+      <param name="startX">minX</param>
+      <param name="endX">0.5</param>
+      <param name="startY">StepFunctionProduct3Start</param>
+      <param name="endY">StepFunctionProduct3End</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param> 
+    </struct>
+
+    <struct name="backgroundViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">1.0</param>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="viscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">boxShape</param>
+      <param name="density">1.0</param>
+      <list name="Rheology">
+        <param>backgroundViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+  </struct>
+
+  <list name="FieldVariablesToCheckpoint">
+    <param>VelocityField</param>
+    <param>PressureField</param>
+  </list>
+  <param name="timeIntegratorOrder">1</param>
+  <param name="maxTimeSteps">10</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./output</param>
+  <param name="dim">2</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">2.0f</param>
+  <param name="maxY">0.35f</param>
+  <param name="maxZ">0.3f</param>
+  <param name="elementResI">32</param>
+  <param name="elementResJ">16</param>
+  <param name="elementResK">4</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+  <param name="particlesPerCell">30</param>
+  <struct name="EulerDeform">
+    <list name="systems">
+      <struct>
+        <param name="mesh">mesh-linear</param>
+        <param name="remesher">velocityRemesher</param>
+        <param name="velocityField">VelocityField</param>
+        <param name="wrapTop">True</param>
+        <param name="staticLeft">True</param>
+        <param name="staticLeftTop">True</param>
+        <param name="staticBottom">True</param>
+        <list name="fields">
+          <struct>
+            <param name="field">VelocityField</param>
+            <param name="variable">velocity</param>
+          </struct>
+          <struct>
+            <param name="field">PressureField</param>
+            <param name="variable">pressure</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">func</param>
+            <param name="value">StepFunctionProduct3</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">bottom</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">func</param>
+            <param name="value">StepFunctionProduct2</param>
+          </struct>
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">func</param>
+            <param name="value">StepFunctionProduct1</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">MeshShapeVC</param>
+        <param name="Shape">fixedShape</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+
+    </list>
+  </struct>
+  <param name="checkpointEvery">1</param>
+  <param name="gravity">1.0</param>
+
+  <param name="StepFunctionProduct3Start">0.1</param>
+  <param name="StepFunctionProduct3End">0.2</param>
+  <param name="StepFunctionProduct3Value">1</param>
+
+  <param name="StepFunctionProduct1Start">0.9</param>
+  <param name="StepFunctionProduct1End">1.1</param>
+  <param name="StepFunctionProduct1Value">1.0</param>
+  <param name="StepFunctionProduct2Start">0.9</param>
+  <param name="StepFunctionProduct2End">1.1</param>
+  <param name="StepFunctionProduct2Value">-1.0</param>
+
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a input/cookbook/viscous_inflow.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/cookbook/viscous_inflow.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,541 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">f</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+      <param name="Inflow">True</param>
+      <param name="Threshold">0.8</param>
+      <param name="CentPosRatio">0.01</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="buoyancyForceTerm">
+      <param name="Type">BuoyancyForceTerm</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="gravity">gravity</param>
+    </struct>
+    <struct name="background">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+
+    <struct name="boxShape">
+      <param name="Type">Box</param>
+      <param name="startX">minX</param>
+      <param name="endX">maxX</param>
+      <param name="startY">minY</param>
+      <param name="endY">maxY</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+    <struct name="leftBoundaryShape">
+      <param name="Type">Box</param>
+      <param name="startX">minX</param>
+      <param name="endX">0.1</param>
+      <param name="startY">minY</param>
+      <param name="endY">maxY</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+
+    <struct name="backgroundViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">1.0</param>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="viscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">boxShape</param>
+      <param name="density">1.0</param>
+      <list name="Rheology">
+        <param>backgroundViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+  </struct>
+
+  <list name="FieldVariablesToCheckpoint">
+    <param>VelocityField</param>
+    <param>PressureField</param>
+  </list>
+  <param name="timeIntegratorOrder">1</param>
+  <param name="maxTimeSteps">10</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./output</param>
+  <param name="dim">2</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">2.0f</param>
+  <param name="maxY">0.35f</param>
+  <param name="maxZ">0.3f</param>
+  <param name="elementResI">32</param>
+  <param name="elementResJ">16</param>
+  <param name="elementResK">4</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+  <param name="particlesPerCell">30</param>
+  <struct name="EulerDeform">
+    <list name="systems">
+      <struct>
+        <param name="mesh">mesh-linear</param>
+        <param name="remesher">velocityRemesher</param>
+        <param name="velocityField">VelocityField</param>
+        <param name="wrapTop">True</param>
+        <param name="staticLeft">True</param>
+        <param name="staticLeftTop">True</param>
+        <param name="staticBottom">True</param>
+        <list name="fields">
+          <struct>
+            <param name="field">VelocityField</param>
+            <param name="variable">velocity</param>
+          </struct>
+          <struct>
+            <param name="field">PressureField</param>
+            <param name="variable">pressure</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">func</param>
+            <param name="value">StepFunctionProduct3</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">bottom</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">func</param>
+            <param name="value">StepFunctionProduct2</param>
+          </struct>
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">func</param>
+            <param name="value">StepFunctionProduct1</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <param name="checkpointEvery">1</param>
+  <param name="gravity">1.0</param>
+
+  <param name="StepFunctionProduct3Start">0.1</param>
+  <param name="StepFunctionProduct3End">0.2</param>
+  <param name="StepFunctionProduct3Value">1</param>
+
+  <param name="StepFunctionProduct1Start">0.9</param>
+  <param name="StepFunctionProduct1End">1.1</param>
+  <param name="StepFunctionProduct1Value">1.0</param>
+  <param name="StepFunctionProduct2Start">0.9</param>
+  <param name="StepFunctionProduct2End">1.1</param>
+  <param name="StepFunctionProduct2Value">-1.0</param>
+
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a input/cookbook/viscous_normal_stress.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/cookbook/viscous_normal_stress.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,526 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">f</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="buoyancyForceTerm">
+      <param name="Type">BuoyancyForceTerm</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="gravity">gravity</param>
+    </struct>
+    <struct name="background">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+
+    <struct name="bottomBoundaryShape">
+      <param name="Type">Box</param>
+      <param name="startX">minX</param>
+      <param name="endX">maxX</param>
+      <param name="startY">minY</param>
+      <param name="endY">0.05</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+
+    <struct name="boxShape">
+      <param name="Type">Box</param>
+      <param name="startX">minX</param>
+      <param name="endX">maxX</param>
+      <param name="startY">minY</param>
+      <param name="endY">maxY</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+    <struct name="backgroundViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">1.0</param>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="viscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">boxShape</param>
+      <param name="density">1.0</param>
+      <list name="Rheology">
+        <param>backgroundViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+    <struct name="stressBC">
+      <param name="Type">StressBC</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="wall">bottom</param>
+      <param name="y_type">double</param>
+      <param name="y_value">0.35</param>
+    </struct>
+  </struct>
+
+  <list name="FieldVariablesToCheckpoint">
+    <param>VelocityField</param>
+    <param>PressureField</param>
+  </list>
+  <param name="timeIntegratorOrder">1</param>
+  <param name="maxTimeSteps">10</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./output</param>
+  <param name="dim">2</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">2.0f</param>
+  <param name="maxY">0.35f</param>
+  <param name="maxZ">0.3f</param>
+  <param name="elementResI">32</param>
+  <param name="elementResJ">16</param>
+  <param name="elementResK">4</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+  <param name="particlesPerCell">30</param>
+  <struct name="EulerDeform">
+    <list name="systems">
+      <struct>
+        <param name="mesh">mesh-linear</param>
+        <param name="remesher">velocityRemesher</param>
+        <param name="velocityField">VelocityField</param>
+        <param name="wrapTop">True</param>
+        <param name="staticBottom">True</param>
+        <list name="fields">
+          <struct>
+            <param name="field">VelocityField</param>
+            <param name="variable">velocity</param>
+          </struct>
+          <struct>
+            <param name="field">PressureField</param>
+            <param name="variable">pressure</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <param name="checkpointEvery">1</param>
+  <param name="gravity">1.0</param>
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a input/cookbook/viscous_sinusoid.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/cookbook/viscous_sinusoid.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,513 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">f</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="buoyancyForceTerm">
+      <param name="Type">BuoyancyForceTerm</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="gravity">gravity</param>
+    </struct>
+    <struct name="background">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+
+    <struct name="backgroundShape">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="backgroundViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">1.0</param>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="viscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">backgroundShape</param>
+      <param name="density">1.0</param>
+      <list name="Rheology">
+        <param>backgroundViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+    <struct name="surfaceAdaptor">
+      <param name="Type">SurfaceAdaptor</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="sourceGenerator">linearMesh-generator</param>
+      <param name="surfaceType">sine</param>
+      <list name="origin">
+        <param>0.0</param>
+      </list>
+      <param name="amplitude">0.1</param>
+      <param name="frequency">6.28318530718</param>
+    </struct>
+  </struct>
+
+  <list name="FieldVariablesToCheckpoint">
+    <param>VelocityField</param>
+    <param>PressureField</param>
+  </list>
+  <param name="timeIntegratorOrder">1</param>
+  <param name="maxTimeSteps">10</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./output</param>
+  <param name="dim">2</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">2.0f</param>
+  <param name="maxY">0.35f</param>
+  <param name="maxZ">0.3f</param>
+  <param name="elementResI">32</param>
+  <param name="elementResJ">16</param>
+  <param name="elementResK">4</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+  <param name="particlesPerCell">30</param>
+  <struct name="EulerDeform">
+    <list name="systems">
+      <struct>
+        <param name="mesh">mesh-linear</param>
+        <param name="remesher">velocityRemesher</param>
+        <param name="velocityField">VelocityField</param>
+        <param name="wrapTop">True</param>
+        <list name="fields">
+          <struct>
+            <param name="field">VelocityField</param>
+            <param name="variable">velocity</param>
+          </struct>
+          <struct>
+            <param name="field">PressureField</param>
+            <param name="variable">pressure</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">bottom</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <param name="checkpointEvery">1</param>
+  <param name="gravity">1.0</param>
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a input/cookbook/viscous_split.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/cookbook/viscous_split.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,523 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">f</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="buoyancyForceTerm">
+      <param name="Type">BuoyancyForceTerm</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="gravity">gravity</param>
+    </struct>
+    <struct name="background">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+
+    <struct name="boxShape">
+      <param name="Type">Box</param>
+      <param name="startX">minX</param>
+      <param name="endX">maxX</param>
+      <param name="startY">minY</param>
+      <param name="endY">maxY</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+    <struct name="backgroundViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">1.0</param>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="viscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">boxShape</param>
+      <param name="density">1.0</param>
+      <list name="Rheology">
+        <param>backgroundViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+  </struct>
+
+  <list name="FieldVariablesToCheckpoint">
+    <param>VelocityField</param>
+    <param>PressureField</param>
+  </list>
+  <param name="timeIntegratorOrder">1</param>
+  <param name="maxTimeSteps">10</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./output</param>
+  <param name="dim">2</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">2.0f</param>
+  <param name="maxY">0.35f</param>
+  <param name="maxZ">0.3f</param>
+  <param name="elementResI">32</param>
+  <param name="elementResJ">16</param>
+  <param name="elementResK">4</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+  <param name="particlesPerCell">30</param>
+  <struct name="EulerDeform">
+    <list name="systems">
+      <struct>
+        <param name="mesh">mesh-linear</param>
+        <param name="remesher">velocityRemesher</param>
+        <param name="velocityField">VelocityField</param>
+        <param name="wrapTop">True</param>
+        <list name="fields">
+          <struct>
+            <param name="field">VelocityField</param>
+            <param name="variable">velocity</param>
+          </struct>
+          <struct>
+            <param name="field">PressureField</param>
+            <param name="variable">pressure</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">bottom</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">func</param>
+            <param name="value">StepFunction</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <param name="checkpointEvery">1</param>
+  <param name="gravity">1.0</param>
+
+  <param name="StepFunctionOffset">1.0</param>
+  <param name="StepFunctionRightSide">1.0</param>
+  <param name="StepFunctionRightEnd">10000.0</param>
+
+  <param name="StepFunctionLowerOffset">1.0</param>
+  <param name="StepFunctionUpperOffset">1.0</param>
+  <param name="StepFunctionValue">1.0</param>
+  <param name="StepFunctionDim">0</param>
+  <param name="StepFunctionLessThan">False</param>
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a input/cookbook/yielding.xml
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/input/cookbook/yielding.xml	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,567 @@
+<?xml version="1.0"?>
+<StGermainData xmlns="http://www.vpac.org/StGermain/XML_IO_Handler/Jun2003">
+  <import>
+    <toolbox>Underworld</toolbox>
+  </import>
+  <plugins>
+    <plugin>Underworld_EulerDeform</plugin>
+    <plugin>StgFEM_StandardConditionFunctions</plugin>
+    <plugin>Underworld_VTKOutput</plugin>
+  </plugins>
+  <struct name="components">
+    <struct name="mesh-linear">
+      <param name="Type">FeMesh</param>
+      <param name="elementType">linear</param>
+    </struct>
+    <struct name="linearMesh-generator">
+      <param name="Type">CartesianGenerator</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="dim">dim</param>
+      <param name="shadowDepth">shadowDepth</param>
+      <param name="regular">False</param>
+      <list name="size">
+        <param>elementResI</param>
+        <param>elementResJ</param>
+        <param>elementResK</param>
+      </list>
+      <list name="minCoord">
+        <param>minX</param>
+        <param>minY</param>
+        <param>minZ</param>
+      </list>
+      <list name="maxCoord">
+        <param>maxX</param>
+        <param>maxY</param>
+        <param>maxZ</param>
+      </list>
+    </struct>
+    <struct name="velocity">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Vector</param>
+      <param name="DataType">Double</param>
+      <param name="VectorComponentCount">dim</param>
+      <list name="names">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="velocityBCs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityICs">
+      <param name="Type">CompositeVC</param>
+      <param name="Data">mesh-linear</param>
+    </struct>
+    <struct name="velocityDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="BaseVariableCount">dim</param>
+      <list name="BaseVariables">
+        <param>vx</param>
+        <param>vy</param>
+        <param>vz</param>
+      </list>
+    </struct>
+    <struct name="VelocityField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">velocityDofLayout</param>
+      <param name="BC">velocityBCs</param>
+      <param name="IC">velocityICs</param>
+      <param name="LinkedDofInfo">velocityLinkedDofs</param>
+    </struct>
+    <struct name="VelocityMagnitudeField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Magnitude</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">Gradient</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="VelocityGradientsInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorInvariant</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorSymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="VorticityField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">TensorAntisymmetricPart</param>
+      <param name="FeVariable">VelocityGradientsField</param>
+    </struct>
+    <struct name="StrainRateInvariantField">
+      <param name="Type">OperatorFeVariable</param>
+      <param name="Operator">SymmetricTensor_Invariant</param>
+      <param name="FeVariable">StrainRateField</param>
+    </struct>
+    <struct name="pressure">
+      <param name="Type">MeshVariable</param>
+      <param name="mesh">mesh-linear</param>
+      <param name="Rank">Scalar</param>
+      <param name="DataType">Double</param>
+    </struct>
+    <struct name="pressureDofLayout">
+      <param name="Type">DofLayout</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="BaseVariables">
+        <param>pressure</param>
+      </list>
+    </struct>
+    <struct name="PressureField">
+      <param name="Type">FeVariable</param>
+      <param name="FEMesh">mesh-linear</param>
+      <param name="DofLayout">pressureDofLayout</param>
+      <param name="LinkedDofInfo">pressureLinkedDofs</param>
+    </struct>
+    <struct name="StressField">
+      <param name="Type">StressField</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="Context">context</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="IC">stressICs</param>
+    </struct> 
+    <struct name="ViscosityField">
+      <param name="Type">ViscosityField</param>
+      <param name="Context">context</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="Mesh">mesh-linear</param>
+      <param name="ConstitutiveMatrix">constitutiveMatrix</param>
+    </struct>
+    <struct name="cellLayout">
+      <param name="Type">SingleCellLayout</param>
+    </struct>
+    <struct name="particleLayout">
+      <param name="Type">GaussParticleLayout</param>
+    </struct>
+    <struct name="gaussSwarm">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">particleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">gaussMapper</param>
+    </struct>
+    <struct name="gaussMapper">
+      <param name="Type">GaussMapper</param>
+      <param name="IntegrationPointsSwarm">gaussSwarm</param>
+      <param name="MaterialPointsSwarm">gaussMaterialSwarm</param>
+    </struct>
+    <struct name="backgroundLayout">
+      <param name="Type">BackgroundParticleLayout</param>
+    </struct>
+    <struct name="gaussMSwarmMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="gaussMaterialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">cellLayout</param>
+      <param name="ParticleLayout">backgroundLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>gaussMSwarmMovementHandler</param>
+      </list>
+    </struct>
+    <struct name="timeIntegrator">
+      <param name="Type">TimeIntegrator</param>
+      <param name="order">timeIntegratorOrder</param>
+      <param name="simultaneous">t</param>
+      <param name="Context">context</param>
+    </struct>
+    <struct name="elementCellLayout">
+      <param name="Type">ElementCellLayout</param>
+      <param name="Mesh">mesh-linear</param>
+    </struct>
+    <struct name="weights">
+      <param name="Type">PCDVC</param>
+      <param name="resolutionX">10</param>
+      <param name="resolutionY">10</param>
+      <param name="resolutionZ">10</param>
+      <param name="lowerT">0.6</param>
+      <param name="upperT">25</param>
+      <param name="maxDeletions">3</param>
+      <param name="maxSplits">3</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="localLayout">
+      <param name="Type">MappedParticleLayout</param>
+    </struct>
+    <struct name="picIntegrationPoints">
+      <param name="Type">IntegrationPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">localLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <param name="WeightsCalculator">weights</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="IntegrationPointMapper">mapper</param>
+    </struct>
+    <struct name="mapper">
+      <param name="Type">CoincidentMapper</param>
+      <param name="IntegrationPointsSwarm">picIntegrationPoints</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="materialSwarmParticleLayout">
+      <param name="Type">MeshParticleLayout</param>
+      <param name="cellParticleCount">particlesPerCell</param>
+      <param name="mesh">mesh-linear</param>
+    </struct>
+    <struct name="pMovementHandler">
+      <param name="Type">ParticleMovementHandler</param>
+    </struct>
+    <struct name="pShadowSync">
+      <param name="Type">ParticleShadowSync</param>
+    </struct>
+    <struct name="materialSwarm">
+      <param name="Type">MaterialPointsSwarm</param>
+      <param name="CellLayout">elementCellLayout</param>
+      <param name="ParticleLayout">materialSwarmParticleLayout</param>
+      <param name="FeMesh">mesh-linear</param>
+      <list name="ParticleCommHandlers">
+        <param>pMovementHandler</param>
+        <param>pShadowSync</param>
+      </list>
+      <param name="SplittingRoutine">splittingRoutine</param>
+      <param name="RemovalRoutine">removalRoutine</param>
+      <param name="EscapedRoutine">escapedRoutine</param>
+    </struct>
+    <struct name="materialSwarmAdvector">
+      <param name="Type">SwarmAdvector</param>
+      <param name="Swarm">materialSwarm</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="VelocityField">VelocityField</param>
+      <param name="PeriodicBCsManager">periodicBCsManager</param>
+      <param name="allowFallbackToFirstOrder">True</param>
+    </struct>
+    <struct name="solutionVelocity">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">VelocityField</param>
+    </struct>
+    <struct name="solutionPressure">
+      <param name="Type">SolutionVector</param>
+      <param name="FeVariable">PressureField</param>
+    </struct>
+    <struct name="mom_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">VelocityField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="cont_force">
+      <param name="Type">ForceVector</param>
+      <param name="FeVariable">PressureField</param>
+      <param name="ExtraInfo">context</param>
+    </struct>
+    <struct name="k_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">VelocityField</param>
+      <param name="RHS">mom_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="constitutiveMatrix">
+      <param name="Type">ConstitutiveMatrixCartesian</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">k_matrix</param>
+    </struct>
+    <struct name="g_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">VelocityField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">mom_force</param>
+      <param name="transposeRHS">cont_force</param>
+      <param name="allowZeroElementContributions">False</param>
+    </struct>
+    <struct name="gradientStiffnessMatrixTerm">
+      <param name="Type">GradientStiffnessMatrixTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="StiffnessMatrix">g_matrix</param>
+    </struct>
+    <struct name="preconditioner">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="preconditionerTerm">
+      <param name="Type">UzawaPreconditionerTerm</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="StiffnessMatrix">preconditioner</param>
+    </struct>
+    <struct name="uzawa">
+      <param name="Type">Stokes_SLE_UzawaSolver</param>
+      <param name="velocitySolver">matrixSolver</param>
+      <param name="Preconditioner">preconditioner</param>
+      <param name="tolerance">linearTolerance</param>
+      <param name="monitor">false</param>
+      <param name="maxIterations">5000</param>
+      <param name="minIterations">1</param>
+    </struct>
+    <struct name="stokesEqn">
+      <param name="Type">Stokes_SLE</param>
+      <param name="SLE_Solver">uzawa</param>
+      <param name="Context">context</param>
+      <param name="StressTensorMatrix">k_matrix</param>
+      <param name="GradientMatrix">g_matrix</param>
+      <param name="DivergenceMatrix"></param>
+      <param name="CompressibilityMatrix">c_matrix</param>
+      <param name="VelocityVector">solutionVelocity</param>
+      <param name="PressureVector">solutionPressure</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="ContinuityForceVector">cont_force</param>
+      <param name="killNonConvergent">false</param>
+      <param name="nonLinearMaxIterations">nonLinearMaxIterations</param>
+      <param name="nonLinearTolerance">nonLinearTolerance</param>
+      <param name="makeConvergenceFile">false</param>
+    </struct>
+    <struct name="c_matrix">
+      <param name="Type">StiffnessMatrix</param>
+      <param name="RowVariable">PressureField</param>
+      <param name="ColumnVariable">PressureField</param>
+      <param name="RHS">cont_force</param>
+      <param name="allowZeroElementContributions">True</param>
+    </struct>
+    <struct name="mixedStabiliser">
+      <param name="Type">MixedStabiliserTerm</param>
+      <param name="Swarm">gaussSwarm</param>
+      <param name="picSwarm">picIntegrationPoints</param>
+      <param name="storeVisc">storeViscosity</param>
+      <param name="StiffnessMatrix">c_matrix</param>
+    </struct>
+    <struct name="buoyancyForceTerm">
+      <param name="Type">BuoyancyForceTerm</param>
+      <param name="ForceVector">mom_force</param>
+      <param name="Swarm">picIntegrationPoints</param>
+      <param name="gravity">gravity</param>
+    </struct>
+    <struct name="background">
+      <param name="Type">Everywhere</param>
+    </struct>
+    <struct name="escapedRoutine">
+      <param name="Type">EscapedRoutine</param>
+      <param name="idealParticleCount">0</param>
+    </struct>
+    <struct name="velocityRemesher">
+      <param name="Type">RegularRemesherCmpt</param>
+      <param name="mesh">mesh-linear</param>
+      <list name="remeshDims">
+        <param>0</param>
+        <param>1</param>
+        <param>2</param>
+      </list>
+    </struct>
+
+    <struct name="boxShape">
+      <param name="Type">Box</param>
+      <param name="startX">minX</param>
+      <param name="endX">maxX</param>
+      <param name="startY">minY</param>
+      <param name="endY">maxY</param>
+      <param name="startZ">minZ</param>
+      <param name="endZ">maxZ</param>
+    </struct>
+    <struct name="backgroundViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">1.0</param>
+    </struct>
+    <struct name="storeViscosity">
+      <param name="Type">StoreVisc</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+    <struct name="storeStress">
+      <param name="Type">StoreStress</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+    </struct>
+
+    <struct name="sphereShape">
+      <param name="Type">Sphere</param>
+      <param name="CentreX">1.0</param>
+      <param name="CentreY">0.15</param>
+      <param name="radius">0.1</param>
+    </struct>
+
+    <struct name="sphereViscosity">
+      <param name="Type">MaterialViscosity</param>
+      <param name="eta0">2.0</param>
+    </struct>
+
+    <struct name="sphereViscous">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">sphereShape</param>
+      <param name="density">1.0</param>
+      <list name="Rheology">
+        <param>sphereViscosity</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+    <struct name="nonSphereShape">
+      <param name="Type">Intersection</param>
+      <list name="shapes">
+        <param>boxShape</param>
+        <param>!sphereShape</param>
+      </list>
+    </struct>
+
+    <struct name="strainWeakening">
+      <param name="Type">StrainWeakening</param>
+      <param name="TimeIntegrator">timeIntegrator</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+      <param name="finalSofteningStrain">0.1</param>
+      <param name="initialDamageFraction">0.0</param>
+      <param name="initialDamageWavenumber">0.5</param>
+      <param name="initialDamageFactor">0.5</param>
+      <param name="healingRate">0.0</param>
+    </struct>
+    <struct name="yielding">
+      <param name="Type">DruckerPrager</param>
+      <param name="PressureField">PressureField</param>
+      <param name="VelocityGradientsField">VelocityGradientsField</param>
+      <param name="MaterialPointsSwarm">materialSwarm</param>
+      <param name="Context">context</param>
+      <param name="StrainWeakening">strainWeakening</param>
+      <param name="StrainRateField">StrainRateField</param>
+      <param name="cohesion">1.0</param>
+      <param name="cohesionAfterSoftening">0.0001</param>
+      <param name="frictionCoefficient">0.0</param>
+      <param name="frictionCoefficientAfterSoftening">0.0</param>
+    </struct>
+    <struct name="crust">
+      <param name="Type">RheologyMaterial</param>
+      <param name="Shape">nonSphereShape</param>
+      <list name="Rheology">
+        <param>backgroundViscosity</param>
+        <param>yielding</param>
+        <param>storeViscosity</param>
+        <param>storeStress</param>
+      </list>
+    </struct>
+
+  </struct>
+  <list name="FieldVariablesToCheckpoint">
+    <param>VelocityField</param>
+    <param>PressureField</param>
+  </list>
+  <param name="timeIntegratorOrder">1</param>
+  <param name="maxTimeSteps">10</param>
+  <param name="outputEvery">1</param>
+  <param name="dumpEvery">1</param>
+  <param name="outputPath">./output</param>
+  <param name="dim">2</param>
+  <param name="shadowDepth">1</param>
+  <param name="minX">0.0f</param>
+  <param name="minY">0.0f</param>
+  <param name="minZ">0.0f</param>
+  <param name="maxX">2.0f</param>
+  <param name="maxY">0.35f</param>
+  <param name="maxZ">0.3f</param>
+  <param name="elementResI">32</param>
+  <param name="elementResJ">16</param>
+  <param name="elementResK">4</param>
+  <param name="allowUnbalancing">True</param>
+  <param name="buildNodeNeighbourTbl">True</param>
+  <param name="buildElementNeighbourTbl">True</param>
+  <param name="particlesPerCell">30</param>
+  <param name="seed">13</param>
+  <param name="gaussParticlesX">2</param>
+  <param name="gaussParticlesY">2</param>
+  <param name="gaussParticlesZ">2</param>
+  <param name="particlesPerCell">30</param>
+  <struct name="EulerDeform">
+    <list name="systems">
+      <struct>
+        <param name="mesh">mesh-linear</param>
+        <param name="remesher">velocityRemesher</param>
+        <param name="velocityField">VelocityField</param>
+        <param name="wrapTop">True</param>
+        <list name="fields">
+          <struct>
+            <param name="field">VelocityField</param>
+            <param name="variable">velocity</param>
+          </struct>
+          <struct>
+            <param name="field">PressureField</param>
+            <param name="variable">pressure</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <struct name="velocityBCs">
+    <param name="type">CompositeVC</param>
+    <list name="vcList">
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">front</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">back</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vz</param>
+            <param name="type">double</param>
+            <param name="value">0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">left</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+          <!-- <struct> -->
+          <!--   <param name="name">vy</param> -->
+          <!--   <param name="type">double</param> -->
+          <!--   <param name="value">0.0</param> -->
+          <!-- </struct> -->
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">right</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vx</param>
+            <param name="type">double</param>
+            <param name="value">1.0</param>
+          </struct>
+        </list>
+      </struct>
+      <struct>
+        <param name="type">WallVC</param>
+        <param name="wall">bottom</param>
+        <list name="variables">
+          <struct>
+            <param name="name">vy</param>
+            <param name="type">double</param>
+            <param name="value">0.0</param>
+          </struct>
+        </list>
+      </struct>
+    </list>
+  </struct>
+  <param name="checkpointEvery">1</param>
+  <param name="gravity">1.0</param>
+</StGermainData>
diff -r 36fe68379dae -r e3370e45d52a tools/generate_pvd.cxx
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/generate_pvd.cxx	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,88 @@
+/* A simple program to generate field and particle pvd files 
+
+   You will need Boost (www.boost.org) to compile this.  Almost any
+   version should do.  On Debian, you compile it with
+
+     g++ generate_pvd.cxx -o generate_pvd -lboost_filesystem
+
+   To generate a static binary, compile it with
+
+     g++ generate_pvd.cxx -o generate_pvd -lboost_system -lboost_filesystem -static
+
+   Usage: generate_pvd START END STEP
+
+   This will output two files, fields.pvd and particles.pvd.  Put them
+   in the same directory as the other fields and particle files.  In
+   paraview, open the pvd files.  You will be able use the movie
+   controls (play, pause, step forward/backward, jump to
+   beginning/end) to examine the time series.
+
+**  Copyright (C) 2009, California Institute of Technology
+
+**  This software is free software; you can redistribute it and/or
+**  modify it under the terms of the GNU General Public License as
+**  published by the Free Software Foundation; either version 2 of the
+**  License, or (at your option) any later version.
+**
+**  This library is distributed in the hope that it will be useful,
+**  but WITHOUT ANY WARRANTY; without even the implied warranty of
+**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+**  General Public License for more details.
+**
+**  You should have received a copy of the GNU General Public License
+**  along with this library; if not, write to the Free Software
+**  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+**  02110-1301 USA
+*/
+
+
+#include <boost/filesystem.hpp>
+#include <boost/filesystem/fstream.hpp>
+#include <cstdlib>
+#include <iostream>
+
+namespace fs=boost::filesystem;
+using namespace std;
+
+
+int main(int argc, char *argv[])
+{
+  if(argc<3)
+    {
+      cerr << "Not enough arguments\n"
+           << "Usage: generate_pvd [start] [end] [step]\n";
+      exit(1);
+    }
+  int start=atoi(argv[1]);
+  int end=atoi(argv[2]);
+  int step=1;
+  if(argc>3)
+    step=atoi(argv[3]);
+  
+  fs::ofstream particles("particles.pvd"), fields("fields.pvd");
+
+  particles << "<?xml version=\"1.0\"?>\n"
+            << "<VTKFile type=\"Collection\" version=\"0.1\">\n"
+            << "  <Collection>\n";
+  fields << "<?xml version=\"1.0\"?>\n"
+         << "<VTKFile type=\"Collection\" version=\"0.1\">\n"
+         << "  <Collection>\n";
+  for(int i=start; i<=end; i+=step)
+    {
+      particles << "    <DataSet timestep=\"" << i
+                << "\" file=\"particles.";
+      particles.width(5);
+      particles.fill('0');
+      particles << i << ".pvtu\"/>\n";
+
+      fields << "    <DataSet timestep=\"" << i
+              << "\" file=\"fields.";
+      fields.width(5);
+      fields.fill('0');
+      fields << i << ".pvts\"/>\n";
+    }
+  particles << "  </Collection>\n"
+            << "</VTKFile>\n";
+  fields << "  </Collection>\n"
+         << "</VTKFile>\n";
+}
diff -r 36fe68379dae -r e3370e45d52a tools/vtk2csv.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/vtk2csv.py	Tue Jan 19 13:40:59 2010 -0800
@@ -0,0 +1,130 @@
+# vtk2csv
+# 
+# Reads in Gale pvts and/or pvtu data and combines it into a single
+# csv file that can be read by vts2matlab Requires pvpython (included
+# with paraview) to be installed.  Invoke it with something like
+#
+#   pvpython vtk2csv.py output/*.pvt[su]
+#
+# Tested with paraview 3.6.1
+#
+# It creates a csv file corresponding to each pvts and pvtu file.
+#
+# Written by Walter Landry with contributions from Bill Broadley and
+# Mark Fleharty
+#
+# Copyright (C) 2009 California Institute of Technology, University of
+# New Mexico, and the Regents of the University of California
+#
+#  This software is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU General Public License as
+#  published by the Free Software Foundation; either version 2 of the
+#  License, or (at your option) any later version.
+#
+#  This library is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#  General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this library; if not, write to the Free Software
+#  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+#  02110-1301 USA
+
+# Convert a serial vtk xml file to csv and delete the vtk file
+
+def decode(vtk_file):
+    import xml.etree.ElementTree as ElementTree
+    root = ElementTree.parse(vtk_file)
+    iter = root.getiterator()
+
+    outfile=open(os.path.splitext(vtk_file)[0]+".csv","w")
+
+    fields={}
+    components={}
+    extents=""
+    for element in iter:
+        # Get the extents for use by external scripts
+        if(element.tag=="Piece"):
+            for name, value in element.items():
+                if(name=="Extent" or name=="NumberOfPoints"):
+                    extents=value
+        # Get the data for each individual variable
+        if(element.tag=="DataArray"):
+            field=""
+            comps=0
+            for name, value in element.items():
+                if (name == 'NumberOfComponents'):
+                    comps=int(value)
+                elif (name=='Name' and value!="offsets" and value!="types"):
+                    fields[value]=[]
+                    field=value
+            if field:
+                if comps:
+                    components[field]=comps
+                else:
+                    components[field]=1
+                if element.text:
+                    text = element.text
+                    text_list = text.split()
+                    aDict=dict()
+                    aDict.clear()	
+                    for i in range (0,len(text_list)):
+                        fields[field].append(text_list[i])
+
+    # Print everything out
+    if extents:
+        outfile.write("# %s\n" % extents)
+    outfile.write("# x, y, z, ")
+    for j in components:
+        if j!="Points":
+            if components==1:
+                outfile.write("%s, " % j)
+            else:
+                for k in range(0,components[j]):
+                    outfile.write("%s%d, " % (j,k))
+    outfile.write("\n")
+    for i in range(0,len(fields["Points"])/3):
+        for n in range(0,3):
+            outfile.write("%s, " % fields["Points"][i*3+n])
+        for j in fields:
+            if j!="Points":
+                for n in range(0,components[j]):
+                    outfile.write("%s, " % fields[j][i*components[j]+n])
+        outfile.write("\n")
+    # Remove the old vtk file
+    os.remove(vtk_file)
+
+
+# First open the parallel vtk xml file and write a serial xml file
+
+from paraview.servermanager import *
+Connect()
+
+for i in range(1,len(sys.argv)):
+   filename=sys.argv[i]
+   print filename
+
+   # Structured Grid
+   if os.path.splitext(filename)[1]=='.pvts':
+       vts_name=os.path.splitext(filename)[0] + ".vts"
+       reader = sources.XMLPStructuredGridReader(FileName=filename)
+       writer=writers.XMLStructuredGridWriter(Input=reader,
+                                              DataMode=0,
+                                              FileName=vts_name)
+       writer.UpdatePipeline()
+       decode(vts_name)
+       
+   # Unstructured Grid (particles)
+   elif os.path.splitext(filename)[1]=='.pvtu':
+       vtu_name=os.path.splitext(filename)[0] + ".vtu"
+       reader = sources.XMLPUnstructuredGridReader(FileName=filename)
+       writer=writers.XMLUnstructuredGridWriter(Input=reader,
+                                                DataMode=0,
+                                                FileName=vtu_name)
+       writer.UpdatePipeline()
+       decode(vtu_name)
+   else:
+       print "Skipping non-parallel VTK file:",filename
+
+



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