[cig-commits] r16473 - in long/3D/SNAC/trunk/Snac/plugins: . remesherSPR viscoplasticSPR

echoi at geodynamics.org echoi at geodynamics.org
Wed Mar 31 08:24:04 PDT 2010


Author: echoi
Date: 2010-03-31 08:24:03 -0700 (Wed, 31 Mar 2010)
New Revision: 16473

Added:
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Constitutive.c
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Constitutive.h
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/ConstructExtensions.c
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/ConstructExtensions.h
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Context.c
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Context.h
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Element.c
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Element.h
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/InitialConditions.c
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/InitialConditions.h
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Make.mm
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Makefile.def
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Mesh.c
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Mesh.h
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Node.c
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Node.h
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Output.c
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Output.h
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Register.c
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Register.h
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Remesh.c
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Remesh.h
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/ViscoPlastic.h
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/makefile
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/types.h
   long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/units.h
Modified:
   long/3D/SNAC/trunk/Snac/plugins/remesherSPR/Remesh.c
   long/3D/SNAC/trunk/Snac/plugins/remesherSPR/RemeshCoords.c
   long/3D/SNAC/trunk/Snac/plugins/remesherSPR/RemeshElements.c
   long/3D/SNAC/trunk/Snac/plugins/remesherSPR/RemeshNodes.c
Log:

remesherSPR plugin now works.
viscoplasticSPR has been newly added, which is compatible with SPR-based remesehr.



Modified: long/3D/SNAC/trunk/Snac/plugins/remesherSPR/Remesh.c
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/remesherSPR/Remesh.c	2010-03-31 13:44:34 UTC (rev 16472)
+++ long/3D/SNAC/trunk/Snac/plugins/remesherSPR/Remesh.c	2010-03-31 15:24:03 UTC (rev 16473)
@@ -49,14 +49,14 @@
 void _SnacRemesher_Remesh( void* _context, void* data ) {
 	Snac_Context*			context = (Snac_Context*)_context;
 	SnacRemesher_Context*	contextExt = ExtensionManager_Get(
-									context->extensionMgr,
-									context,
-									SnacRemesher_ContextHandle );
+															  context->extensionMgr,
+															  context,
+															  SnacRemesher_ContextHandle );
 	Mesh*					mesh = context->mesh;
 	SnacRemesher_Mesh*		meshExt = ExtensionManager_Get(
-									context->meshExtensionMgr,
-									mesh,
-									SnacRemesher_MeshHandle );
+														   context->meshExtensionMgr,
+														   mesh,
+														   SnacRemesher_MeshHandle );
 	Bool 					remesh;
 
 	Journal_DPrintf( context->debug, "In: %s\n", __func__ );
@@ -123,7 +123,7 @@
 		
 		/* Remesh the coordinates. */
 		_SnacRemesher_NewCoords( context );
-		
+
 		/* Interpolate current nodal values onto new coordinates. */
 		meshExt->newNodes = (Snac_Node*)ExtensionManager_Malloc( mesh->nodeExtensionMgr, mesh->nodeLocalCount );
 		_SnacRemesher_InterpolateNodes( context );
@@ -132,28 +132,36 @@
 		   This simple copy works because bottoms nodes are always bottom 
 		   and remeshing doesn't change the node number. */
 		for( newNode_i = 0; newNode_i < mesh->nodeLocalCount; newNode_i++ ) {
-			Snac_Node* dstNode = 
-				(Snac_Node*)ExtensionManager_At( context->mesh->nodeExtensionMgr,
-												 meshExt->newNodes,
-												 newNode_i );
+			Snac_Node* dstNode = (Snac_Node*)ExtensionManager_At( context->mesh->nodeExtensionMgr,
+																  meshExt->newNodes,
+																  newNode_i );
 
-			Snac_Node* srcNode = 
-				Snac_Node_At( context, newNode_i );
+			Snac_Node* srcNode = Snac_Node_At( context, newNode_i );
 
 			dstNode->residualFr = srcNode->residualFr;
 			dstNode->residualFt = srcNode->residualFt;
 		}
 		
-		/* Copy accross the new coord, node & element information to the current arrays. */
-		memcpy( mesh->nodeCoord, meshExt->newNodeCoords, mesh->nodeLocalCount * sizeof(Coord) );
-		memcpy( mesh->node, meshExt->newNodes, mesh->nodeExtensionMgr->finalSize * mesh->nodeLocalCount );
+		/* Copy accross the new coord */
+  		memcpy( mesh->nodeCoord, meshExt->newNodeCoords, mesh->nodeLocalCount * sizeof(Coord) );
 
+		/* Copy node structures to the current array */
+		/* The next single line can possibly replace the for loop.
+		   memcpy( mesh->node, meshExt->newNodes, mesh->nodeExtensionMgr->finalSize * mesh->nodeLocalCount );  */
+		for( newNode_i = 0; newNode_i < mesh->nodeLocalCount; newNode_i++ ) {
+			Snac_Node* dstNode = Snac_Node_At( context, newNode_i );
+			Snac_Node* srcNode = (Snac_Node*)ExtensionManager_At( context->mesh->nodeExtensionMgr,
+																  meshExt->newNodes,
+																  newNode_i );
+			memcpy( dstNode, srcNode, mesh->nodeExtensionMgr->finalSize );
+		}
+
 		/* Simply average the recovered fields at the barycenter of each tet and run updateElements. */
-		_SnacRemesher_InterpolateElements( context );
-		_SnacRemesher_UpdateElements( context );
+   		_SnacRemesher_InterpolateElements( context );
+  		_SnacRemesher_UpdateElements( context ); 
 		
 		/* Free some space, as it won't be needed until the next remesh. */
-		ExtensionManager_Free( mesh->nodeExtensionMgr, meshExt->newNodes );
+ 		ExtensionManager_Free( mesh->nodeExtensionMgr, meshExt->newNodes );
 		meshExt->newNodes = NULL;
 		
 		/*

Modified: long/3D/SNAC/trunk/Snac/plugins/remesherSPR/RemeshCoords.c
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/remesherSPR/RemeshCoords.c	2010-03-31 13:44:34 UTC (rev 16472)
+++ long/3D/SNAC/trunk/Snac/plugins/remesherSPR/RemeshCoords.c	2010-03-31 15:24:03 UTC (rev 16473)
@@ -542,7 +542,6 @@
 								}
 								//fprintf(stderr,"dett=%e det0=%e det1=%e det2=%e shape=%e %e %e\n",dett,det[0],det[1],det[2],shape[0],shape[1],shape[2]);
 
-								/* Assign proper values of velocities and temperatures from old mesh to new mesh */
 								meshExt->newNodeCoord[node_lI][0] = initialNodeCoord[0];
 								meshExt->newNodeCoord[node_lI][1] = y1*shape[0] + y2*shape[1] + y3*shape[2];
 								//meshExt->newNodeCoord[node_lI][1] -= TOL*fabs(meshExt->newNodeCoord[node_lI][1]);
@@ -726,7 +725,6 @@
                                     shape[tNode_I] = det[tNode_I] / dett;
                                 }
 
-                                /* Assign proper values of velocities and temperatures from old mesh to new mesh */
                                 meshExt->newNodeCoord[node_lI][0] = initialNodeCoord[0];
                                 meshExt->newNodeCoord[node_lI][1] = y1*shape[0] + y2*shape[1] + y3*shape[2];
                                 meshExt->newNodeCoord[node_lI][2] = initialNodeCoord[2];
@@ -918,7 +916,6 @@
 										shape[tNode_I] = det[tNode_I] / dett;
 									}
 
-									/* Assign proper values of velocities and temperatures from old mesh to new mesh */
 									meshExt->newNodeCoord[node_lI][0] = initialNodeCoord[0];
 									meshExt->newNodeCoord[node_lI][1] = y1*shape[0] + y2*shape[1] + y3*shape[2];
 									meshExt->newNodeCoord[node_lI][2] = initialNodeCoord[2];
@@ -1106,7 +1103,6 @@
                                         shape[tNode_I] = det[tNode_I] / dett;
                                     }
 
-                                    /* Assign proper values of velocities and temperatures from old mesh to new mesh */
                                     meshExt->newNodeCoord[node_lI][0] = initialNodeCoord[0];
                                     meshExt->newNodeCoord[node_lI][1] = y1*shape[0] + y2*shape[1] + y3*shape[2];
                                     meshExt->newNodeCoord[node_lI][2] = initialNodeCoord[2];
@@ -1380,7 +1376,6 @@
 									shape[tNode_I] = det[tNode_I] / dett;
 								}
 
-								/* Assign proper values of velocities and temperatures from old mesh to new mesh */
 								x1[0] = initialNodeCoordS[0];
 								x1[1] = y1*shape[0] + y2*shape[1] + y3*shape[2];
 								x1[2] = initialNodeCoordS[2];
@@ -1578,7 +1573,6 @@
                                     shape[tNode_I] = det[tNode_I] / dett;
                                 }
 
-                                /* Assign proper values of velocities and temperatures from old mesh to new mesh */
                                 x1[0] = initialNodeCoordS[0];
                                 x1[1] = y1*shape[0] + y2*shape[1] + y3*shape[2];
                                 x1[2] = initialNodeCoordS[2];
@@ -1782,7 +1776,6 @@
 										shape[tNode_I] = det[tNode_I] / dett;
 									}
 
-									/* Assign proper values of velocities and temperatures from old mesh to new mesh */
 									x1[0] = initialNodeCoordS[0];
 									x1[1] = y1*shape[0] + y2*shape[1] + y3*shape[2];
 									x1[2] = initialNodeCoordS[2];
@@ -1979,7 +1972,6 @@
                                         shape[tNode_I] = det[tNode_I] / dett;
                                     }
 
-                                    /* Assign proper values of velocities and temperatures from old mesh to new mesh */
                                     x1[0] = initialNodeCoordS[0];
                                     x1[1] = y1*shape[0] + y2*shape[1] + y3*shape[2];
                                     x1[2] = initialNodeCoordS[2];

Modified: long/3D/SNAC/trunk/Snac/plugins/remesherSPR/RemeshElements.c
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/remesherSPR/RemeshElements.c	2010-03-31 13:44:34 UTC (rev 16472)
+++ long/3D/SNAC/trunk/Snac/plugins/remesherSPR/RemeshElements.c	2010-03-31 15:24:03 UTC (rev 16473)
@@ -84,8 +84,8 @@
 /* 			if( element->tetra[tetra_I].material_I==2 ) */
 /* 				fprintf(stderr,"\t int matId=%e (%d)\n",materialInd, (Material_Index)((materialInd/(100*Tetrahedra_Count))+0.5)); */
 		}
-		if( element->material_I ==2 ) //element_lI==0 )
-			fprintf(stderr,"int matId=%d\n",(Material_Index)(materialInd/10+0.5));
+/* 		if( element->material_I ==2 ) //element_lI==0 ) */
+/* 			fprintf(stderr,"int matId=%d\n",(Material_Index)(materialInd/10+0.5)); */
 		//element->material_I = ((Material_Index)(((double)materialInd/(Tetrahedra_Count))+0.5))/100;
 		element->material_I = (Material_Index)(materialInd/10+0.5);
 
@@ -113,21 +113,37 @@
 	Index i,j;
 	double strain[6];
 	double stress[6];
-	double materialInd;
+	float materialInd;
+	double density;
 
 	/* Compute averages of recovered fields for this tet.*/
 	for(j=0;j<6;j++) {
 		strain[j] = 0.0;
 		stress[j] = 0.0;
 		for(i=0;i<4;i++) {
-			strain[j] += (0.25f*Snac_Element_Node_P(context, dstEltInd, TetraToNode[dstTetInd][i])->strainSPR[j]);
-			stress[j] += (0.25f*Snac_Element_Node_P(context, dstEltInd, TetraToNode[dstTetInd][i])->stressSPR[j]);
+			Index dstNodeNum = Element_Node_I(context, dstEltInd, TetraToNode[dstTetInd][i]);
+ 			Snac_Node* dstNode = Snac_Node_At( context, dstNodeNum );
+ 			strain[j] += 0.25f * dstNode->strainSPR[j];
+			stress[j] += 0.25f * dstNode->stressSPR[j];
+			/* The next two lines can possibly replace the above codes, but need testing. */
+			/* strain[j] += (0.25f*Snac_Element_Node_P(context, dstEltInd, TetraToNode[dstTetInd][i])->strainSPR[j]); */
+			/* stress[j] += (0.25f*Snac_Element_Node_P(context, dstEltInd, TetraToNode[dstTetInd][i])->stressSPR[j]); */
 		}
 	}
 	materialInd = 0.0;
-	for(i=0;i<4;i++) 
-		materialInd += 0.25f*Snac_Element_Node_P(context, dstEltInd, TetraToNode[dstTetInd][i])->material_ISPR;
+	for(i=0;i<4;i++) {
+		Index dstNodeNum = Element_Node_I(context, dstEltInd, TetraToNode[dstTetInd][i]);
+		Snac_Node* dstNode = Snac_Node_At( context, dstNodeNum );
+		materialInd += 0.25f*(dstNode->material_ISPR);
+	}
 
+	density = 0.0;
+	for(i=0;i<4;i++) {
+		Index dstNodeNum = Element_Node_I(context, dstEltInd, TetraToNode[dstTetInd][i]);
+		Snac_Node* dstNode = Snac_Node_At( context, dstNodeNum );
+		density += 0.25f*(dstNode->densitySPR);
+	}
+
 	/* Assign the computed averages to the tets. */
 	dstElt->tetra[dstTetInd].strain[0][0] = strain[0];
 	dstElt->tetra[dstTetInd].strain[1][1] = strain[1];
@@ -149,7 +165,14 @@
 	dstElt->tetra[dstTetInd].stress[2][0] = stress[4];
 	dstElt->tetra[dstTetInd].stress[2][1] = stress[5];
 
- 	dstElt->tetra[dstTetInd].material_I = (Material_Index)(materialInd); 
+ 	dstElt->tetra[dstTetInd].material_I = 0;
+/* 	if( dstElt->tetra[dstTetInd].material_I != 0 ) */
+/* 		fprintf(stderr,"%d %d %e %d\n",dstEltInd,dstTetInd,dstElt->tetra[dstTetInd].material_I, */
+/* 				(unsigned int)(dstElt->tetra[dstTetInd].material_I)); */
+
+ 	dstElt->tetra[dstTetInd].density = density; 
+
+#if 0
  	if( dstElt->material_I == 2 ) 
  		fprintf(stderr,"el=%d tet=%d elmatI=%d matI=%e (%d) (%e %e %e %e)\n",dstEltInd,dstTetInd,dstElt->material_I,materialInd, 
  				dstElt->tetra[dstTetInd].material_I,
@@ -158,4 +181,5 @@
 				Snac_Element_Node_P(context, dstEltInd, TetraToNode[dstTetInd][2])->material_ISPR,
 				Snac_Element_Node_P(context, dstEltInd, TetraToNode[dstTetInd][3])->material_ISPR
 				); 
+#endif
 }

Modified: long/3D/SNAC/trunk/Snac/plugins/remesherSPR/RemeshNodes.c
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/remesherSPR/RemeshNodes.c	2010-03-31 13:44:34 UTC (rev 16472)
+++ long/3D/SNAC/trunk/Snac/plugins/remesherSPR/RemeshNodes.c	2010-03-31 15:24:03 UTC (rev 16473)
@@ -76,7 +76,7 @@
 	/*
 	** Populate arrays for recovered fields using the SPR method.
 	*/
-	for( newNode_i = 0; newNode_i < mesh->nodeLocalCount; newNode_i++ ) 
+	for( newNode_i = 0; newNode_i < mesh->nodeLocalCount; newNode_i++ )
 		SnacRemesher_RecoverNode( context, contextExt, newNode_i );
 
 	/*
@@ -185,20 +185,20 @@
 void interpolateNode( void* _context, Node_LocalIndex newNodeInd, Element_DomainIndex dEltInd ) {
 	Snac_Context*			context = (Snac_Context*)_context;
 	SnacRemesher_Context*	contextExt = ExtensionManager_Get( context->extensionMgr,
-								   context,
-								   SnacRemesher_ContextHandle );
-	Mesh*				mesh = context->mesh;
+															   context,
+															   SnacRemesher_ContextHandle );
+	Mesh*					mesh = context->mesh;
 	SnacRemesher_Mesh*		meshExt = ExtensionManager_Get( context->meshExtensionMgr,
-									mesh,
-									SnacRemesher_MeshHandle );
-	NodeLayout*			nLayout = mesh->layout->nodeLayout;
+															mesh,
+															SnacRemesher_MeshHandle );
+	NodeLayout*				nLayout = mesh->layout->nodeLayout;
 	unsigned				nEltNodes;
 	Node_DomainIndex*		eltNodes;
-	Coord				newNodeCoord;
-	Coord			crds[8];
-	double			weights[4];
-	unsigned		tetNodeInds[4];
-	unsigned		eltNode_i;
+	Coord					newNodeCoord;
+	Coord					crds[8];
+	double					weights[4];
+	unsigned				tetNodeInds[4];
+	unsigned				eltNode_i;
 
 	/* Extract the element's node indices.  Note that there should always be eight of these. */
 	{
@@ -297,6 +297,8 @@
 
 	dstNode->material_ISPR = 0.0;
 
+	dstNode->densitySPR = 0.0;
+
 	/* Loop over each contributing node. */
 	for( tetNode_i = 0; tetNode_i < 4; tetNode_i++ ) {
 		Snac_Node*	srcNode;
@@ -325,6 +327,8 @@
 		dstNode->stressSPR[5] += srcNode->stressSPR[5] * weights[tetNode_i];
 
 		dstNode->material_ISPR += srcNode->material_ISPR * weights[tetNode_i];
+
+		dstNode->densitySPR += srcNode->densitySPR * weights[tetNode_i];
 	}
 }
 
@@ -334,7 +338,9 @@
 {
 	Snac_Context*			context = (Snac_Context*)_context;
 	Mesh*					mesh = context->mesh;
-	NodeLayout*				nLayout = mesh->layout->nodeLayout;
+	MeshLayout*				layout = (MeshLayout*)mesh->layout;
+	HexaMD*					decomp = (HexaMD*)layout->decomp;
+	NodeLayout*				nLayout = layout->nodeLayout;
 
 	Snac_Node*				node = Snac_Node_At( context, node_lI );
 	Coord*					coord = Snac_NodeCoord_P( context, node_lI );
@@ -345,105 +351,163 @@
 	gsl_vector* 			vecaStrain[6];
 	gsl_vector*				vecaStress[6];
 	gsl_vector*				vecaMaterial_I;
+	gsl_vector*				vecaDensity;
 	gsl_vector* 			vecbStrain[6];
 	gsl_vector* 			vecbStress[6];
 	gsl_vector* 			vecbMaterial_I;
+	gsl_vector*				vecbDensity;
 	Index 	 	 	 	 	i,j; 
-		
+	IJK						ijk;
+	Node_GlobalIndex		node_gI = _MeshDecomp_Node_LocalToGlobal1D( decomp, node_lI );
+	Node_GlobalIndex		gNodeI = decomp->nodeGlobal3DCounts[0];
+	Node_GlobalIndex		gNodeJ = decomp->nodeGlobal3DCounts[1];
+	Node_GlobalIndex		gNodeK = decomp->nodeGlobal3DCounts[2];
+	Node_GlobalIndex		intNode_gI;
+	Node_DomainIndex		intNode_lI;
+	unsigned int			isBoundaryNode=0, patchCenterNum=1, patchCenterI, patchCenterList[2];
+
+	RegularMeshUtils_Node_1DTo3D( decomp, node_gI, &ijk[0], &ijk[1], &ijk[2] );
+	
+	/* If boundary node, find a (topologically?) nearest interior node. 
+	   Loosely following 
+	       Khoei and Gharehbaghi, 2007, The superconvergent patch recovery techinique and data transfer operators in 3D plasticity problems,
+	       Finite Elements in Analysis and Design 43 (2007) 630-- 648. */
+	if( (gNodeI>2) && (ijk[0]==0) ) {
+		ijk[0] += 1;
+		isBoundaryNode = 1;
+	}
+	if( (gNodeI>2) && (ijk[0]==decomp->nodeGlobal3DCounts[0]-1) ) {
+		ijk[0] -= 1;
+		isBoundaryNode = 1;
+	}
+	if( (gNodeJ>2) && (ijk[1]==0) ) {
+		ijk[1] += 1;
+		isBoundaryNode = 1;
+	}
+	if( (gNodeJ>2) && (ijk[1]==decomp->nodeGlobal3DCounts[1]-1) ) {
+		ijk[1] -= 1;
+		isBoundaryNode = 1;
+	}
+	if( (gNodeK>2) && (ijk[2]==0) ) {
+		ijk[2] += 1;
+		isBoundaryNode = 1;
+	}
+	if( (gNodeK>2) && (ijk[2]==decomp->nodeGlobal3DCounts[2]-1) ) {
+		ijk[2] -= 1;
+		isBoundaryNode = 1;
+	}
+
+	/* node_lI itself always becomes a patch center,
+	 and if the current node is a boundary node, find an interior node and add it to the patch center list. */
+	patchCenterList[0] = node_lI; 
+	if( isBoundaryNode ) {
+		patchCenterNum=2;
+		intNode_gI = ijk[0]+gNodeI*ijk[1]+gNodeI*gNodeJ*ijk[2];
+		patchCenterList[1] = Mesh_NodeMapGlobalToLocal( mesh, intNode_gI );
+	}
+
 	/* initialize gsl vectors and matrix. */
 	matA = gsl_matrix_alloc(4,4); gsl_matrix_set_zero( matA );
 	vecaMaterial_I = gsl_vector_alloc(4); gsl_vector_set_zero( vecaMaterial_I );
 	vecbMaterial_I = gsl_vector_alloc(4); gsl_vector_set_zero( vecbMaterial_I );
+	vecaDensity = gsl_vector_alloc(4); gsl_vector_set_zero( vecaDensity );
+	vecbDensity = gsl_vector_alloc(4); gsl_vector_set_zero( vecbDensity );
 	for(i=0;i<6;i++) {
 		vecaStrain[i] = gsl_vector_alloc(4); gsl_vector_set_zero( vecaStrain[i] );
 		vecaStress[i] = gsl_vector_alloc(4); gsl_vector_set_zero( vecaStress[i] );
 		vecbStrain[i] = gsl_vector_alloc(4); gsl_vector_set_zero( vecbStrain[i] );
 		vecbStress[i] = gsl_vector_alloc(4); gsl_vector_set_zero( vecbStress[i] );
 	}
-			
-	/* For each incident element, find inicident tets. */
-	for( nodeElement_I = 0; nodeElement_I < nodeElementCount; nodeElement_I++ ) {
-		Element_DomainIndex		element_dI = context->mesh->nodeElementTbl[node_lI][nodeElement_I];
+	
+	/* For each patch center */
+	for( patchCenterI=0; patchCenterI < patchCenterNum; patchCenterI++ ) {
+		/* For each incident element, find inicident tets. */
+		for( nodeElement_I = 0; nodeElement_I < nodeElementCount; nodeElement_I++ ) {
+			Element_DomainIndex		element_dI = context->mesh->nodeElementTbl[patchCenterList[patchCenterI]][nodeElement_I];
 
-		if( element_dI < mesh->elementDomainCount ) {
-			Index elementTetra_I;
-			Snac_Element* element = Snac_Element_At( context, element_dI );
+			if( element_dI < mesh->elementDomainCount ) {
+				Index elementTetra_I;
+				Snac_Element* element = Snac_Element_At( context, element_dI );
 
-			/* Extract the element's node indices.  Note that there should always be eight of these. */
-			{
-				Element_GlobalIndex	element_gI;
+				/* Extract the element's node indices.  Note that there should always be eight of these. */
+				{
+					Element_GlobalIndex	element_gI;
 					
-				elements = Memory_Alloc_Array( Node_DomainIndex, nodeElementCount, "SnacRemesher" );
-				element_gI = Mesh_ElementMapDomainToGlobal( mesh, element_dI );
-				nLayout->buildElementNodes( nLayout, element_gI, elements );
-			}
+					elements = Memory_Alloc_Array( Node_DomainIndex, nodeElementCount, "SnacRemesher" );
+					element_gI = Mesh_ElementMapDomainToGlobal( mesh, element_dI );
+					nLayout->buildElementNodes( nLayout, element_gI, elements );
+				}
 				
-			/* Convert global node indices to domain. */
-			{
-				unsigned	eltNode_i;
+				/* Convert global node indices to domain. */
+				{
+					unsigned	eltNode_i;
 					
-				for( eltNode_i = 0; eltNode_i < nodeElementCount; eltNode_i++ ) {
-					elements[eltNode_i] = Mesh_NodeMapGlobalToDomain( mesh, elements[eltNode_i] );
+					for( eltNode_i = 0; eltNode_i < nodeElementCount; eltNode_i++ ) {
+						elements[eltNode_i] = Mesh_NodeMapGlobalToDomain( mesh, elements[eltNode_i] );
+					}
 				}
-			}
 
-			/* For each incident tetrahedron in the incident element,
-			   add up contributions to P, A, and b as in Zienkiewicz and Zhu (1992), p. 1336 */
-			for( elementTetra_I = 0; elementTetra_I < Node_Element_Tetrahedra_Count;elementTetra_I++ ) {
-				Tetrahedra_Index	tetra_I = NodeToTetra[nodeElement_I][elementTetra_I];
-				Coord	tCrds[4];
-				double 	positionP[4] = {1.0,0.0,0.0,0.0};
-				Index 	ii,jj;
+				/* For each incident tetrahedron in the incident element,
+				   add up contributions to P, A, and b as in Zienkiewicz and Zhu (1992), p. 1336 */
+				for( elementTetra_I = 0; elementTetra_I < Node_Element_Tetrahedra_Count;elementTetra_I++ ) {
+					Tetrahedra_Index	tetra_I = NodeToTetra[nodeElement_I][elementTetra_I];
+					Coord	tCrds[4];
+					double 	positionP[4] = {1.0,0.0,0.0,0.0};
+					Index 	ii,jj;
 
-				/* Extract the tetrahedron's coordinates. */
-				Vector_Set( tCrds[0], mesh->nodeCoord[elements[TetraToNode[tetra_I][0]]] );
-				Vector_Set( tCrds[1], mesh->nodeCoord[elements[TetraToNode[tetra_I][1]]] );
-				Vector_Set( tCrds[2], mesh->nodeCoord[elements[TetraToNode[tetra_I][2]]] );
-				Vector_Set( tCrds[3], mesh->nodeCoord[elements[TetraToNode[tetra_I][3]]] );
+					/* Extract the tetrahedron's coordinates. */
+					Vector_Set( tCrds[0], mesh->nodeCoord[elements[TetraToNode[tetra_I][0]]] );
+					Vector_Set( tCrds[1], mesh->nodeCoord[elements[TetraToNode[tetra_I][1]]] );
+					Vector_Set( tCrds[2], mesh->nodeCoord[elements[TetraToNode[tetra_I][2]]] );
+					Vector_Set( tCrds[3], mesh->nodeCoord[elements[TetraToNode[tetra_I][3]]] );
 					
-				for(ii=1;ii<4;ii++)
-					for(jj=0;jj<4;jj++)
-						positionP[ii] += (0.25f * tCrds[jj][ii-1]);
+					for(ii=1;ii<4;ii++)
+						for(jj=0;jj<4;jj++)
+							positionP[ii] += (0.25f * tCrds[jj][ii-1]);
 					
-				for(ii=0;ii<4;ii++) {
-					double tmp;
-					tmp = gsl_vector_get(vecbStrain[0],ii) + positionP[ii]*element->tetra[tetra_I].strain[0][0];
-					gsl_vector_set(vecbStrain[0],ii,tmp);
-					tmp = gsl_vector_get(vecbStrain[1],ii) + positionP[ii]*element->tetra[tetra_I].strain[1][1];
-					gsl_vector_set(vecbStrain[1],ii,tmp);
-					tmp = gsl_vector_get(vecbStrain[2],ii) + positionP[ii]*element->tetra[tetra_I].strain[2][2];
-					gsl_vector_set(vecbStrain[2],ii,tmp);
-					tmp = gsl_vector_get(vecbStrain[3],ii) + positionP[ii]*element->tetra[tetra_I].strain[0][1];
-					gsl_vector_set(vecbStrain[3],ii,tmp);
-					tmp = gsl_vector_get(vecbStrain[4],ii) + positionP[ii]*element->tetra[tetra_I].strain[0][2];
-					gsl_vector_set(vecbStrain[4],ii,tmp);
-					tmp = gsl_vector_get(vecbStrain[5],ii) + positionP[ii]*element->tetra[tetra_I].strain[1][2];
-					gsl_vector_set(vecbStrain[5],ii,tmp);
+					for(ii=0;ii<4;ii++) {
+						double tmp;
+						tmp = gsl_vector_get(vecbStrain[0],ii) + positionP[ii]*element->tetra[tetra_I].strain[0][0];
+						gsl_vector_set(vecbStrain[0],ii,tmp);
+						tmp = gsl_vector_get(vecbStrain[1],ii) + positionP[ii]*element->tetra[tetra_I].strain[1][1];
+						gsl_vector_set(vecbStrain[1],ii,tmp);
+						tmp = gsl_vector_get(vecbStrain[2],ii) + positionP[ii]*element->tetra[tetra_I].strain[2][2];
+						gsl_vector_set(vecbStrain[2],ii,tmp);
+						tmp = gsl_vector_get(vecbStrain[3],ii) + positionP[ii]*element->tetra[tetra_I].strain[0][1];
+						gsl_vector_set(vecbStrain[3],ii,tmp);
+						tmp = gsl_vector_get(vecbStrain[4],ii) + positionP[ii]*element->tetra[tetra_I].strain[0][2];
+						gsl_vector_set(vecbStrain[4],ii,tmp);
+						tmp = gsl_vector_get(vecbStrain[5],ii) + positionP[ii]*element->tetra[tetra_I].strain[1][2];
+						gsl_vector_set(vecbStrain[5],ii,tmp);
 
-					tmp = gsl_vector_get(vecbStress[0],ii) + positionP[ii]*element->tetra[tetra_I].stress[0][0];
-					gsl_vector_set(vecbStress[0],ii,tmp);
-					tmp = gsl_vector_get(vecbStress[1],ii) + positionP[ii]*element->tetra[tetra_I].stress[1][1];
-					gsl_vector_set(vecbStress[1],ii,tmp);
-					tmp = gsl_vector_get(vecbStress[2],ii) + positionP[ii]*element->tetra[tetra_I].stress[2][2];
-					gsl_vector_set(vecbStress[2],ii,tmp);
-					tmp = gsl_vector_get(vecbStress[3],ii) + positionP[ii]*element->tetra[tetra_I].stress[0][1];
-					gsl_vector_set(vecbStress[3],ii,tmp);
-					tmp = gsl_vector_get(vecbStress[4],ii) + positionP[ii]*element->tetra[tetra_I].stress[0][2];
-					gsl_vector_set(vecbStress[4],ii,tmp);
-					tmp = gsl_vector_get(vecbStress[5],ii) + positionP[ii]*element->tetra[tetra_I].stress[1][2];
-					gsl_vector_set(vecbStress[5],ii,tmp);
+						tmp = gsl_vector_get(vecbStress[0],ii) + positionP[ii]*element->tetra[tetra_I].stress[0][0];
+						gsl_vector_set(vecbStress[0],ii,tmp);
+						tmp = gsl_vector_get(vecbStress[1],ii) + positionP[ii]*element->tetra[tetra_I].stress[1][1];
+						gsl_vector_set(vecbStress[1],ii,tmp);
+						tmp = gsl_vector_get(vecbStress[2],ii) + positionP[ii]*element->tetra[tetra_I].stress[2][2];
+						gsl_vector_set(vecbStress[2],ii,tmp);
+						tmp = gsl_vector_get(vecbStress[3],ii) + positionP[ii]*element->tetra[tetra_I].stress[0][1];
+						gsl_vector_set(vecbStress[3],ii,tmp);
+						tmp = gsl_vector_get(vecbStress[4],ii) + positionP[ii]*element->tetra[tetra_I].stress[0][2];
+						gsl_vector_set(vecbStress[4],ii,tmp);
+						tmp = gsl_vector_get(vecbStress[5],ii) + positionP[ii]*element->tetra[tetra_I].stress[1][2];
+						gsl_vector_set(vecbStress[5],ii,tmp);
 
-					tmp = gsl_vector_get(vecbMaterial_I,ii) + positionP[ii]*((double)(element->tetra[tetra_I].material_I)+0.5);
-					gsl_vector_set(vecbMaterial_I,ii,tmp); 
+						tmp = gsl_vector_get(vecbMaterial_I,ii) + positionP[ii]*((double)(element->tetra[tetra_I].material_I)+0.5);
+						gsl_vector_set(vecbMaterial_I,ii,tmp); 
+
+						tmp = gsl_vector_get(vecbDensity,ii) + positionP[ii]*element->tetra[tetra_I].density;
+						gsl_vector_set(vecbDensity,ii,tmp); 
 					
-					for(jj=0;jj<4;jj++) {
-						tmp = gsl_matrix_get(matA,ii,jj) + positionP[ii]*positionP[jj];
-						gsl_matrix_set(matA,ii,jj,tmp);
-					}
-				} /* end of verteces of a tet. */
-			} /* end of incident tets. */
-		} /* if within my domain */
-	} /* end of incident elements. */
+						for(jj=0;jj<4;jj++) {
+							tmp = gsl_matrix_get(matA,ii,jj) + positionP[ii]*positionP[jj];
+							gsl_matrix_set(matA,ii,jj,tmp);
+						}
+					} /* end of verteces of a tet. */
+				} /* end of incident tets. */
+			} /* if within my domain */
+		} /* end of incident elements. */
+	} /* end of patchCenterI */
 		
 	/* compute parameter vectors. */
 	{
@@ -457,6 +521,7 @@
 			gsl_linalg_LU_solve (matA, p, vecbStress[i], vecaStress[i]);
 		}
 		gsl_linalg_LU_solve (matA, p, vecbMaterial_I, vecaMaterial_I);
+		gsl_linalg_LU_solve (matA, p, vecbDensity, vecaDensity);
 		/* 			printf ("x = \n"); */
 		/* 			gsl_vector_fprintf (stdout, x, "%g"); */
 		gsl_permutation_free (p);
@@ -478,14 +543,21 @@
 			node->stressSPR[j] += gsl_vector_get(vecaStress[j],i+1)*(*coord)[i];
 		}
 	}
+
 	node->material_ISPR = gsl_vector_get(vecaMaterial_I,0);
 	for(i=0;i<3;i++) 
 		node->material_ISPR += gsl_vector_get(vecaMaterial_I,i+1)*(*coord)[i];
 
+	node->densitySPR = gsl_vector_get(vecaDensity,0);
+	for(i=0;i<3;i++) 
+		node->densitySPR += gsl_vector_get(vecaDensity,i+1)*(*coord)[i];
+
 	/* free gsl vectors and matrix. */
 	gsl_matrix_free( matA );
 	gsl_vector_free( vecaMaterial_I );
 	gsl_vector_free( vecbMaterial_I );
+	gsl_vector_free( vecaDensity );
+	gsl_vector_free( vecbDensity );
 	for(i=0;i<6;i++) {
 		gsl_vector_free( vecaStrain[i] );
 		gsl_vector_free( vecaStress[i] );

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Constitutive.c
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Constitutive.c	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Constitutive.c	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,601 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2004,
+**       Pururav Thoutireddy, Center for Advanced Computing Research, Caltech.
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**      Pururav Thoutireddy, Center for Advanced Computing Research, Caltech. ( puru at cacr.caltech.edu)
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+**
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+** $Id: Constitutive.c 3274 2007-03-27 20:25:29Z EunseoChoi $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#include <mpi.h>
+#include <StGermain/StGermain.h>
+#include <StGermain/FD/FD.h>
+#include "Snac/Snac.h"
+#include "units.h"
+#include "types.h"
+#include "Element.h"
+#include "Constitutive.h"
+#include "Register.h"
+#include <math.h>
+#include "Snac/Temperature/Temperature.h"
+#include <string.h>
+#include <assert.h>
+
+#ifndef PI
+#ifndef M_PIl
+#ifndef M_PI
+#define PI 4.0*atan(1.0)
+#else
+#define PI M_PI
+#endif
+#else
+#define PI M_PIl
+#endif
+#endif
+
+
+void SnacViscoPlastic_Constitutive( void* _context, Element_LocalIndex element_lI ) {
+	Snac_Context* context = (Snac_Context*)_context;
+	Snac_Element* element = Snac_Element_At( context, element_lI );
+	SnacViscoPlastic_Element* viscoplasticElement = ExtensionManager_Get( context->mesh->elementExtensionMgr, element, SnacViscoPlastic_ElementHandle );
+	SnacTemperature_Element* temperatureElement = ExtensionManager_Get( context->mesh->elementExtensionMgr, element, SnacTemperature_ElementHandle );
+	const Snac_Material* material = &context->materialProperty[element->material_I];
+
+	/*ccccc*/
+	MeshLayout*			meshLayout = (MeshLayout*)context->meshLayout;
+	HexaMD*				decomp = (HexaMD*)meshLayout->decomp;
+	IJK				ijk;
+	Element_GlobalIndex		element_gI = _MeshDecomp_Element_LocalToGlobal1D( decomp, element_lI );
+	EntryPoint* 			temperatureEP;
+
+	RegularMeshUtils_Element_1DTo3D( decomp, element_gI, &ijk[0], &ijk[1], &ijk[2] );
+	/*ccccc*/
+
+	temperatureEP = Context_GetEntryPoint( context,	"Snac_EP_LoopElementsEnergy" );
+
+	/* If this is a ViscoPlastic material, calculate its stress. */
+	if ( material->rheology & Snac_Material_ViscoPlastic ) {
+		Tetrahedra_Index	tetra_I;
+		Node_LocalIndex         node_lI;
+
+		/* viscoplastic material properties */
+		const double		bulkm = material->lambda + 2.0f * material->mu/3.0f;
+		StressTensor*		stress;
+		StrainTensor*		strain;
+		Strain		        plasticStrain;
+		ViscoPlastic*		viscosity;
+		double				straind0,straind1,straind2,stressd0,stressd1,stressd2;
+		double              Stress0[3][3];
+		double				trace_strain;
+		double				trace_stress;
+		double				temp;
+		double				vic1;
+		double				vic2;
+		double				VolumicStress;
+		double				rviscosity=material->refvisc;
+		double              rmu= material->mu;
+		double				srJ2;
+		double				avgTemp;
+		plModel             yieldcriterion=material->yieldcriterion;
+
+		/* For now reference values of viscosity, second invariant of deviatoric */
+		/* strain rate and reference temperature  are being hard wired ( these specific */
+		/* values are from paper by Hall et. al., EPSL, 2003 */
+		double				rstrainrate = material->refsrate;
+		double				rTemp = material->reftemp;
+		double				H = material->activationE; // kJ/mol
+		double				srexponent = material->srexponent;
+		double				srexponent1 = material->srexponent1;
+		double				srexponent2 = material->srexponent2;
+		const double		R=8.31448;  // J/mol/K
+		/* elasto-plastic material properties */
+		double				cohesion = 0.0f;
+		double				frictionAngle = 0.0f;
+		double				dilationAngle = 0.0f;
+		double				hardening = 0.0f;
+		double				tension_cutoff=0.0;
+		const double		degrad = PI / 180.0f;
+		double				totalVolume=0.0f,depls=0.0f;
+		int principal_stresses(StressTensor* stress,double sp[],double cn[3][3]);
+		unsigned int		i;
+		double				tmp=0.0;
+		const double		a1 = material->lambda + 2.0f * material->mu ;
+		const double		a2 = material->lambda ;
+		int					ind=0;
+
+		/*    printf("Entered ViscoPlastic update \n"); */
+
+		/* Work out the plastic material properties of this element */
+		for( tetra_I = 0; tetra_I < Tetrahedra_Count; tetra_I++ ) {
+			double			cn[3][3] = {{0.0,0.0,0.0},{0.0,0.0,0.0},{0.0,0.0,0.0}};
+			double			s[3] = {0.0,0.0,0.0};
+			double			alam, dep1, dep2, dep3, depm;
+			/*ccccc*/
+
+			stress = &element->tetra[tetra_I].stress;
+			strain = &element->tetra[tetra_I].strain;
+			plasticStrain = viscoplasticElement->plasticStrain[tetra_I];
+			viscosity = &viscoplasticElement->viscosity[tetra_I];
+
+			if( context->computeThermalStress ) {
+				(*stress)[0][0] += temperatureElement->thermalStress[tetra_I];
+				(*stress)[1][1] += temperatureElement->thermalStress[tetra_I];
+				(*stress)[2][2] += temperatureElement->thermalStress[tetra_I];
+			}
+
+			/* storing original stress in local array */
+			Stress0[0][0] = (*stress)[0][0];
+			Stress0[1][1] = (*stress)[1][1];
+			Stress0[2][2] = (*stress)[2][2];
+			Stress0[0][1] = (*stress)[0][1];
+			Stress0[0][2] = (*stress)[0][2];
+			Stress0[1][2] = (*stress)[1][2];
+			trace_stress = (*stress)[0][0] + (*stress)[1][1] + (*stress)[2][2];
+			/*  trace_strain = element->tetra[tetra_I].volume/element->tetra[tetra_I].old_volume-1.0f; */
+			trace_strain = (*strain)[0][0] + (*strain)[1][1] + (*strain)[2][2];
+
+			/*     printf(" Trace strain=%g\t Trace Stress=%g\n",trace_strain,trace_stress); */
+
+			/* Deviatoric Stresses and Strains */
+			straind0 =  (*strain)[0][0] -  (trace_strain) / 3.0f;
+			straind1 =  (*strain)[1][1] -  (trace_strain) / 3.0f;
+			straind2 =  (*strain)[2][2] -  (trace_strain) / 3.0f;
+
+			stressd0 =  (*stress)[0][0] -  (trace_stress) / 3.0f;
+			stressd1 =  (*stress)[1][1] -  (trace_stress) / 3.0f;
+			stressd2 =  (*stress)[2][2] -  (trace_stress) / 3.0f;
+
+			/* compute viscosity and add thermal stress */
+			if( temperatureEP ) {
+
+				srJ2 = sqrt(fabs(straind1*straind2+straind2*straind0+straind0*straind1 -(*strain[0][1])*(*strain[0][1])-(*strain[0][2])*(*strain[0][2])-(*strain[1][2])*(*strain[1][2])))/context->dt;
+				if(srJ2 == 0.0f) srJ2 = rstrainrate; // temporary. should be vmax/length_scale
+
+				avgTemp=0.0;
+				for(node_lI=0; node_lI<4; node_lI++) {
+					Snac_Node* contributingNode = Snac_Element_Node_P(
+																	  context,
+																	  element_lI,
+																	  TetraToNode[tetra_I][node_lI] );
+					SnacTemperature_Node* temperatureNodeExt = ExtensionManager_Get(
+																					context->mesh->nodeExtensionMgr,contributingNode,
+																					SnacTemperature_NodeHandle );
+
+					avgTemp += 0.25 * temperatureNodeExt->temperature;
+					assert( !isnan(avgTemp) && !isinf(avgTemp) );
+				}
+				// Hall et. al., 2004, G3
+				(*viscosity)= rviscosity*pow((srJ2/rstrainrate),(1./srexponent-1.))
+					*exp(H/R*(1./(avgTemp+273.15)-1./(rTemp+273.15)));
+				if((*viscosity) < material->vis_min) (*viscosity) = material->vis_min;
+				if((*viscosity) > material->vis_max) (*viscosity) = material->vis_max;
+				Journal_Firewall(
+								 !isnan((*viscosity)) && !isinf((*viscosity)),
+								 context->snacError,
+								 "rvisc=%e Erattio=%e pow(E)=%e, dT=%e exp=%e\n",
+								 rviscosity,
+								 (srJ2/rstrainrate),
+								 pow((srJ2/rstrainrate),
+									 (1./srexponent-1.)),
+								 exp(H/R*(1./(avgTemp+273.15)-1./(rTemp+273.15))),
+								 (1./(avgTemp+273.15)-1./(rTemp+273.15)) );
+#if 0
+				// Lavier and Buck, JGR, 2002
+				(*viscosity) = pow(rviscosity,-1.0/srexponent1)*pow(srJ2,1.0/srexponent2-1)*exp(H/R/(avgTemp+273.15));
+#endif
+			}
+			else {
+				(*viscosity) = rviscosity;
+				Journal_Firewall(
+								 !isnan((*viscosity)) && !isinf((*viscosity)),
+								 context->snacError,
+								 "(*viscosity) is nan or inf\n" );
+			}
+
+			/* Non dimensional parameters elastic/viscous */
+			temp = rmu / (2.0f* (*viscosity)) * context->dt;
+
+			vic1 = 1.0f - temp;
+			vic2 = 1.0f / (1.0f + temp);
+			/*    printf("temp=%g\t rmu=%g\t viscosity=%g\t\n",temp,rmu,*viscosity); */
+			/*                          printf("trace_stress=%g\t trace_strain=%g\t vic1=%g\t vic2=%g\n",trace_stress,trace_strain,vic1,vic2); */
+			/* Deviatoric Stress Update */
+
+			stressd0 =  (stressd0 * vic1 + 2.0f * rmu * straind0) * vic2 ;
+			stressd1 =  (stressd1 * vic1 + 2.0f * rmu * straind1) * vic2 ;
+			stressd2 =  (stressd2 * vic1 + 2.0f * rmu * straind2) * vic2 ;
+
+			(*stress)[0][1] =((*stress)[0][1] * vic1 + 2.0f * rmu * (*strain)[0][1]) * vic2;
+			(*stress)[0][2] =((*stress)[0][2] * vic1 + 2.0f * rmu * (*strain)[0][2]) * vic2;
+			(*stress)[1][2] =((*stress)[1][2] * vic1 + 2.0f * rmu * (*strain)[1][2]) * vic2;
+
+			/* Isotropic stress is elastic,
+			   WARNING:volumic Strain may be better defined as
+			   volumique change in the mesh */
+			VolumicStress = trace_stress / 3.0f + bulkm * trace_strain;
+
+			(*stress)[0][0] = stressd0 + VolumicStress;
+			(*stress)[1][1] = stressd1 + VolumicStress;
+			(*stress)[2][2] = stressd2 + VolumicStress;
+
+			principal_stresses(stress,s,cn);
+
+			/* compute friction and dilation angles based on accumulated plastic strain in tetrahedra */
+			/* Piece-wise linear softening */
+			/* Find current properties from linear interpolation */
+#if 0
+			/*ccccc*/
+			if(material->putSeeds && context->loop <= 1) {
+				if(ijk[1] >= decomp->elementGlobal3DCounts[1]-2)
+					if(ijk[0] == decomp->elementGlobal3DCounts[0]/2 ) {
+						//if(ijk[0] >= 10 && ijk[0] <= 14 ) {
+						viscoplasticElement->plasticStrain[tetra_I] = 1.1*material->plstrain[1];
+						plasticStrain = viscoplasticElement->plasticStrain[tetra_I];
+						fprintf(stderr,"loop=%d ijk=%d %d %d aps=%e plasticE=%e\n",
+								context->loop,ijk[0],ijk[1],ijk[2],plasticStrain,
+								viscoplasticElement->plasticStrain[tetra_I]);
+					}
+			}
+			/*ccccc*/
+#endif
+			for( i = 0; i < material->nsegments; i++ ) {
+				const double pl1 = material->plstrain[i];
+				const double pl2 = material->plstrain[i+1];
+
+				if( plasticStrain >= pl1 && plasticStrain <= pl2 ) {
+					const double	tgf = (material->frictionAngle[i+1] - material->frictionAngle[i]) / (pl2 - pl1);
+					const double	tgd = (material->dilationAngle[i+1] - material->dilationAngle[i]) / (pl2 - pl1);
+					const double	tgc = (material->cohesion[i+1] - material->cohesion[i]) / (pl2 - pl1);
+
+					frictionAngle = material->frictionAngle[i] + tgf * (plasticStrain - pl1);
+					dilationAngle = material->dilationAngle[i] + tgd * (plasticStrain - pl1);
+					cohesion = material->cohesion[i] + tgc * (plasticStrain - pl1);
+					hardening = tgc;
+				}
+			}
+
+			if( frictionAngle > 0.0f ) {
+				tension_cutoff = material->ten_off;
+				if( frictionAngle > 0.0) {
+					tmp = cohesion / tan( frictionAngle * degrad);
+					if(tmp < tension_cutoff) tension_cutoff=tmp;
+				}
+			}
+			else {
+				/* frictionAngle < 0.0 violates second law of thermodynamics */
+				fprintf(stderr,"rank:%d elem:%d tet:%d plasticStrain=%e\n",element_lI,tetra_I,plasticStrain);
+				assert(0);
+			}
+
+			if( yieldcriterion == mohrcoulomb )
+				{
+
+					double sphi = sin( frictionAngle * degrad );
+					double spsi = sin( dilationAngle * degrad );
+					double anphi = (1.0f + sphi) / (1.0f - sphi);
+					double anpsi = (1.0f + spsi) / (1.0f - spsi);
+					double fs = s[0] - s[2] * anphi + 2 * cohesion * sqrt( anphi );
+					double ft = s[2] - tension_cutoff;
+					/* CHECK FOR COMPOSITE YIELD CRITERION  */
+					ind=0;
+					if( fs < 0.0f || ft > 0.0f ) {
+						/*! Failure: shear or tensile */
+						double aP = sqrt( 1.0f + anphi * anphi ) + anphi;
+						double sP = tension_cutoff * anphi - 2 * cohesion * sqrt( anphi );
+						double h = s[2] - tension_cutoff + aP * ( s[0] - sP );
+
+						ind=1;
+
+						if( h < 0.0f ) {
+							/* !shear failure  */
+							alam = fs / ( a1 - a2 * anpsi + a1 * anphi * anpsi - a2 * anphi + 2.0*sqrt(anphi)*hardening );
+							s[0] -= alam * ( a1 - a2 * anpsi );
+							s[1] -= alam * a2 * ( 1.0f - anpsi );
+							s[2] -= alam * ( a2 - a1 * anpsi );
+							dep1 = alam;
+							dep2 = 0.0f;
+							dep3 = -alam * anpsi;
+						}
+						else {
+							/* tensile failure */
+							alam = ft / a1;
+							s[0] -= alam * a2;
+							s[1] -= alam * a2;
+							s[2] -= alam * a1;
+							dep1 = 0.0f;
+							dep2 = 0.0f;
+							dep3 = alam;
+						}
+					}
+					else {
+						/* ! no failure - just elastic increment */
+
+						dep1 = 0.0f;
+						dep2 = 0.0f;
+						dep3 = 0.0f;
+					}
+					if(ind) {
+						unsigned int k,m,n;
+						/* Second invariant of accumulated plastic increment  */
+						depm = ( dep1 + dep2 + dep3 ) / 3.0f;
+						viscoplasticElement->plasticStrain[tetra_I] += sqrt( 0.5f * ((dep1-depm) * (dep1-depm) + (dep2-depm) * (dep2-depm) + (dep3-depm) * (dep3-depm) + depm*depm) );
+
+						/* Stress projection back to euclidean coordinates */
+						memset( stress, 0, sizeof((*stress)) );
+						/* Resolve back to global axes  */
+						for( m = 0; m < 3; m++ ) {
+							for( n = m; n < 3; n++ ) {
+								for( k = 0; k < 3; k++ ) {
+									(*stress)[m][n] += cn[k][m] * cn[k][n] * s[k];
+								}
+							}
+						}
+					}
+				}
+			else
+				Journal_Firewall( (0>1), "In %s: \"mohrcoulomb\" is the only available yield criterion.\n", __func__ );
+
+			depls += viscoplasticElement->plasticStrain[tetra_I]*element->tetra[tetra_I].volume;
+			totalVolume += element->tetra[tetra_I].volume;
+		}
+		/* volume-averaged accumulated plastic strain, aps */
+		viscoplasticElement->aps = depls/totalVolume;
+	}
+}
+
+
+int principal_stresses(StressTensor* stress, double sp[3], double cn[3][3])
+{
+
+	double **a,**v,*d;
+	int i,j;
+
+	a = dmatrix(1,3,1,3);
+	v = dmatrix(1,3,1,3);
+	d = dvector(1,3);
+
+	a[1][1] = (*stress)[0][0];
+	a[2][2] = (*stress)[1][1];
+	a[3][3] = (*stress)[2][2];
+	a[1][2] = (*stress)[0][1];
+	a[1][3] = (*stress)[0][2];
+	a[2][3] = (*stress)[1][2];
+	a[2][1] = a[1][2];
+	a[3][1] = a[1][3];
+	a[3][2] = a[2][3];
+
+	jacobi(a,d,v);
+
+	d[1] *= -1.0f;
+	d[2] *= -1.0f;
+	d[3] *= -1.0f;
+
+	eigsrt(d,v);
+
+	d[1] *= -1.0f;
+	d[2] *= -1.0f;
+	d[3] *= -1.0f;
+
+	for(i=0;i<3;i++) {
+		sp[i] = d[i+1];
+		for(j=0;j<3;j++) {
+			cn[i][j] = v[j+1][i+1];
+		}
+	}
+
+	free_dmatrix(a,1,3,1,3);
+	free_dmatrix(v,1,3,1,3);
+	free_dvector(d,1,3);
+
+	return(1);
+}
+
+int jacobi(double** a, double* d, double** v)
+{
+
+	int nrot = 0;
+	const unsigned int nmax = 100, n = 3;
+	double b[nmax], z[nmax], tresh,sm,g,h,t,theta,c,s,tau;
+
+	int i,j,ip,iq;
+
+	for(ip=1;ip<=n;ip++) {
+		for(iq=1;iq<=n;iq++) v[ip][iq] = 0.0f;
+		v[ip][ip] = 1.0f;
+	}
+
+	for(ip=1;ip<=n;ip++) {
+		b[ip] = d[ip] = a[ip][ip];
+		z[ip] = 0.0f;
+	}
+
+	for(i=1;i<=50;i++) {
+		sm = 0.0f;
+		for(ip=1;ip<=n-1;ip++) {
+			for(iq=ip+1;iq<=n;iq++)
+				sm += fabs(a[ip][iq]);
+		}
+		if(sm == 0.0f)
+			return(0);
+
+		if(i < 4) {
+			tresh = 0.2f * sm / ( n*n );
+		}
+		else {
+			tresh = 0.0f;
+		}
+
+		for(ip=1;ip<=n-1;ip++) {
+			for(iq=ip+1;iq<=n;iq++) {
+				g = 100.0f*fabs(a[ip][iq]);
+				if( (i > 4) && (double)(fabs(d[ip])+g) == (double)fabs(d[ip]) && (double)(fabs(d[iq])+g) == (double)fabs(d[iq]))
+					a[ip][iq] = 0.0f;
+				else if( fabs(a[ip][iq]) > tresh ) {
+					h = d[iq] - d[ip];
+					if( (fabs(h)+g) == fabs(h) )
+						t = a[ip][iq] / h;
+					else {
+						theta = 0.5f * h / (a[ip][iq]);
+						t = 1.0f / (fabs(theta) + sqrt(1.0f + theta*theta));
+						if(theta < 0.0f) t *= -1.0f;
+					}
+					c = 1.0f / sqrt(1.0f + t*t);
+					s = t * c;
+					tau = s / (1.0f + c);
+					h = t * a[ip][iq];
+					z[ip] -= h;
+					z[iq] += h;
+					d[ip] -= h;
+					d[iq] += h;
+					a[ip][iq] = 0.0f;
+					for(j=1;j<=ip-1;j++) {
+						ROTATE(a,j,ip,j,iq);
+					}
+					for(j=ip+1;j<=iq-1;j++) {
+						ROTATE(a,ip,j,j,iq);
+					}
+					for(j=iq+1;j<=n;j++) {
+						ROTATE(a,ip,j,iq,j);
+					}
+					for(j=1;j<=n;j++) {
+						ROTATE(v,j,ip,j,iq);
+					}
+
+					++nrot;
+				}
+			}
+		}
+		for(ip=1;ip<=n;ip++) {
+			b[ip] += z[ip];
+			d[ip] = b[ip];
+			z[ip] = 0.0f;
+		}
+	}
+	assert(i<50);
+
+	return 1;
+}
+
+
+int eigsrt(double* d, double** v)
+{
+
+	const unsigned int n = 3;
+	int i,j,k;
+	double p;
+
+	for(i=1;i<n;i++) {
+		k = i;
+		p = d[i];
+
+		for(j=i+1;j<=n;j++) {
+			if(d[j] >= p) {
+				k = j;
+				p = d[j];
+			}
+		}
+		if(k != i) {
+			d[k] = d[i];
+			d[i] = p;
+			for(j=1;j<=n;j++) {
+				p = v[j][i];
+				v[j][i] = v[j][k];
+				v[j][k] = p;
+			}
+		}
+	}
+	return(0);
+}
+
+double **dmatrix(long nrl, long nrh, long ncl, long nch)
+/* allocate a double matrix with subscript range m[nrl..nrh][ncl..nch] */
+{
+	long i, nrow=nrh-nrl+1,ncol=nch-ncl+1;
+	double **m;
+
+	/* allocate pointers to rows */
+	m=(double **) malloc((size_t)((nrow+NR_END)*sizeof(double*)));
+	if (!m) nrerror("allocation failure 1 in matrix()");
+	m += NR_END;
+	m -= nrl;
+	/* allocate rows and set pointers to them */
+	m[nrl]=(double *) malloc((size_t)((nrow*ncol+NR_END)*sizeof(double)));
+	if (!m[nrl]) nrerror("allocation failure 2 in matrix()");
+	m[nrl] += NR_END;
+	m[nrl] -= ncl;
+	for(i=nrl+1;i<=nrh;i++) m[i]=m[i-1]+ncol;
+	/* return pointer to array of pointers to rows */
+	return m;
+}
+
+
+void free_dmatrix(double **m, long nrl, long nrh, long ncl, long nch)
+/* free a double matrix allocated by dmatrix() */
+{
+	free((FREE_ARG) (m[nrl]+ncl-NR_END));
+	free((FREE_ARG) (m+nrl-NR_END));
+}
+
+
+void nrerror(char error_text[])
+{
+	fprintf(stderr,"Numerical Recipes run-time error...\n");
+	fprintf(stderr,"%s\n",error_text);
+	fprintf(stderr,"...now exiting to system...\n");
+	exit(1);
+}
+
+
+double *dvector(long nl, long nh)
+/* allocate a double vector with subscript range v[nl..nh] */
+{
+	double *v;
+	v=(double *)malloc((size_t) ((nh-nl+1+NR_END)*sizeof(double)));
+	if (!v) nrerror("allocation failure in dvector()");
+	return v-nl+NR_END;
+}
+
+int *ivector(long nl, long nh)
+/* allocate an int vector with subscript range v[nl..nh] */
+{
+	int *v;
+	v=(int *)malloc((size_t) ((nh-nl+1+NR_END)*sizeof(int)));
+	if (!v) nrerror("allocation failure in ivector()");
+	return v-nl+NR_END;
+}
+
+void free_dvector(double *v, long nl, long nh)
+/* free a double vector allocated with dvector() */
+{
+	free((FREE_ARG) (v+nl-NR_END));
+}
+
+void free_ivector(int *v, long nl, long nh)
+/* free an int vector allocated with ivector() */
+{
+	free((FREE_ARG) (v+nl-NR_END));
+}

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Constitutive.h
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Constitutive.h	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Constitutive.h	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,70 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2004,
+**       Pururav Thoutireddy, Center for Advanced Computing Research, Caltech.
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**      Pururav Thoutireddy, Center for Advanced Computing Research, Caltech. ( puru at cacr.caltech.edu)
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+** 
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+*/
+/** \file
+** Role:
+**	Calculates the plastic properties for a given element. 
+**
+** Assumptions:
+**	None as yet.
+**
+** Comments:
+**	None as yet.
+**
+** $Id: Constitutive.h 3274 2007-03-27 20:25:29Z EunseoChoi $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#define ROTATE(a,i,j,k,l) g=a[i][j];h=a[k][l];a[i][j]=g-s*(h+g*tau);\
+    a[k][l]=h+s*(g-h*tau);
+#define SWAP(g,h) {y=(g);(g)=(h);(h)=y;}
+#define SIGN(a,b) ((b) >= 0.0 ? fabs(a) : -fabs(a))
+
+
+#define TINY 1.0e-20
+#define RADIX 2.0
+#define NR_END 1
+#define FREE_ARG char*	
+ 
+#ifndef __SnacViscoPlastic_h__
+#define __SnacViscoPlastic_h__
+	
+	void SnacViscoPlastic_Constitutive( void* context, Element_LocalIndex element_lI );
+	
+	double** dmatrix(long nrl, long nrh, long ncl, long nch);
+	double *dvector(long nl, long nh);
+	int *ivector(long nl, long nh);
+	void free_ivector(int *v, long nl, long nh);
+	void free_dmatrix(double **m, long nrl, long nrh, long ncl, long nch);
+	void free_dvector(double *v, long nl, long nh);
+	void nrerror(char error_text[]);
+	int jacobi(double** a, double* d, double** v);
+	int eigsrt(double* d, double** v);
+#endif /* __SnacViscoPlastic_h__ */

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/ConstructExtensions.c
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/ConstructExtensions.c	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/ConstructExtensions.c	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,112 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003,
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+**
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+** $Id: ConstructExtensions.c 3234 2006-06-23 04:12:40Z LaetitiaLePourhiet $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#include <mpi.h>
+#include <StGermain/StGermain.h>
+#include <StGermain/FD/FD.h>
+#include "Snac/Snac.h"
+#include "types.h"
+#include "Context.h"
+#include "Register.h"
+#include "Element.h"
+#include "ConstructExtensions.h"
+#include <assert.h>
+#include <limits.h>
+#ifndef PATH_MAX
+	#define PATH_MAX 1024
+#endif
+
+void _SnacViscoPlastic_ConstructExtensions( void* _context, void* data ) {
+	Snac_Context*				context = (Snac_Context*)_context;
+	SnacViscoPlastic_Context*			contextExt = ExtensionManager_Get(
+																		  context->extensionMgr,
+																		  context,
+																		  SnacViscoPlastic_ContextHandle );
+	Snac_Element                            tmpElement;
+	SnacViscoPlastic_Element*               tmpElementExt = ExtensionManager_Get(
+																				 context->mesh->elementExtensionMgr,
+																				 &tmpElement,
+																				 SnacViscoPlastic_ElementHandle );
+	char					tmpBuf[PATH_MAX];
+	/* Because plastic strain is not an array by itself, we must the "complex" constructor for Variable... the info needs to be
+	 * wrapped this generic way... */
+	Index                                   viscoplasticOffsetCount = 1;
+	SizeT                                   viscoplasticOffsets[] = { 
+		(SizeT)((char*)&tmpElementExt->aps - (char*)&tmpElement) };
+	Variable_DataType                       viscoplasticDataTypes[] = { Variable_DataType_Double };
+	Index                                   viscoplasticDataTypeCounts[] = { 1 };
+
+	//	#if DEBUG
+	if( context->rank == 0 )		printf( "In %s()\n", __func__ );
+	//	#endif
+	/* Create the StGermain variable aps, which is stored on an element extension */
+	Variable_New(
+				 "plStrain",
+				 viscoplasticOffsetCount,
+				 viscoplasticOffsets,
+				 viscoplasticDataTypes,
+				 viscoplasticDataTypeCounts,
+				 0,
+				 &ExtensionManager_GetFinalSize( context->mesh->elementExtensionMgr ),
+				 &context->mesh->layout->decomp->elementDomainCount,
+				 (void**)&context->mesh->element,
+				 context->variable_Register );
+	int element_lI;        
+	for( element_lI = 0; element_lI < context->mesh->elementLocalCount; element_lI++ ) {
+		Snac_Element*           element = Snac_Element_At( context, element_lI );
+		SnacViscoPlastic_Element*       viscoplasticElement = ExtensionManager_Get( context->mesh->elementExtensionMgr, element,
+																					SnacViscoPlastic_ElementHandle );
+		viscoplasticElement->aps = 0.0f;
+	}//for
+
+
+	/* Prepare the dump file */
+	sprintf( tmpBuf, "%s/plStrain.%u", context->outputPath, context->rank );
+	if( (contextExt->plStrainOut = fopen( tmpBuf, "w+" )) == NULL ) {
+		assert( contextExt->plStrainOut /* failed to open file for writing */ );
+		abort();
+	}
+	sprintf( tmpBuf, "%s/plStrainCP.%u", context->outputPath, context->rank );
+	if( (contextExt->plStrainCheckpoint = fopen( tmpBuf, "w+" )) == NULL ) {
+		assert( contextExt->plStrainCheckpoint /* failed to open file for writing */ );
+		abort();
+	}
+	sprintf( tmpBuf, "%s/viscosity.%u", context->outputPath, context->rank );
+	if( (contextExt->viscOut = fopen( tmpBuf, "w+" )) == NULL ) {
+		assert( contextExt->viscOut /* failed to open file for writing */ );
+		abort();
+	}
+	sprintf( tmpBuf, "%s/viscosityCP.%u", context->outputPath, context->rank );
+	if( (contextExt->viscCheckpoint = fopen( tmpBuf, "w+" )) == NULL ) {
+		assert( contextExt->viscCheckpoint /* failed to open file for writing */ );
+		abort();
+	}
+}

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/ConstructExtensions.h
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/ConstructExtensions.h	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/ConstructExtensions.h	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,45 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003, 
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+** 
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+*/
+/** \file
+** Role:
+**
+** Assumptions:
+**
+** Comments:
+**
+** $Id: ConstructExtensions.h 1958 2004-08-26 19:08:58Z puru $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#ifndef __SnacViscoPlastic_ConstructExtensions_h__
+#define __SnacViscoPlastic_ConstructExtensions_h__
+	
+	void _SnacViscoPlastic_ConstructExtensions( void* _context, void* data );
+	
+#endif /* __SnacViscoPlastic_ConstructExtensions_h__ */

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Context.c
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Context.c	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Context.c	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,45 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003, 
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+** 
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+** $Id: Context.c 1958 2004-08-26 19:08:58Z puru $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#include <mpi.h>
+#include <StGermain/StGermain.h>
+#include <StGermain/FD/FD.h>
+#include "Snac/Snac.h"
+#include "types.h"
+#include "Context.h"
+#include <stdio.h>
+
+void SnacViscoPlastic_Context_Print( void* _context ) {
+	SnacViscoPlastic_Context*	self = (SnacViscoPlastic_Context*)_context;
+	
+	printf( "SnacViscoPlastic_Context:\n" );
+	printf( "\tplstrain (ptr): %p", self->plStrainOut );
+}

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Context.h
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Context.h	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Context.h	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,56 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003, 
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+** 
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+*/
+/** \file
+** Role:
+**
+** Assumptions:
+**
+** Comments:
+**
+** $Id: Context.h 3104 2005-07-14 22:16:41Z EunseoChoi $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#ifndef __SnacViscoPlastic_Context_h__
+#define __SnacViscoPlastic_Context_h__
+	
+	/* Context Information */
+	struct _SnacViscoPlastic_Context {
+		/* Dumping */
+		FILE*				plStrainOut;
+		FILE*				viscOut;
+		FILE*				plStrainCheckpoint;
+		FILE*				viscCheckpoint;
+		FILE*				plstrainTensorOut;
+	};
+	
+	/* Print the contents of the context extension */
+	void SnacViscoPlastic_Context_Print( void* _context );
+	
+#endif /* __SnacViscoPlastic_Context_h__ */

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Element.c
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Element.c	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Element.c	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,49 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003, 
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+** 
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+** $Id: Element.c 1958 2004-08-26 19:08:58Z puru $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#include <mpi.h>
+#include <StGermain/StGermain.h>
+#include <StGermain/FD/FD.h>
+#include "Snac/Snac.h"
+#include "types.h"
+#include "Element.h"
+#include <stdio.h>
+
+void SnacViscoPlastic_Element_Print( void* element ) {
+	SnacViscoPlastic_Element*	self = (SnacViscoPlastic_Element*)element;
+	Tetrahedra_Index	tetra_I;
+	
+	printf( "SnacViscoPlastic_Element:\n" );
+	printf( "\tplasticStrain: " );
+	for( tetra_I = 0; tetra_I < Tetrahedra_Count; tetra_I++ ) {
+		printf( "%g, ", self->plasticStrain[tetra_I] );
+	}
+}

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Element.h
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Element.h	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Element.h	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,54 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003,
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+**
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+*/
+/** \file
+** Role:
+**	Snac plastic properties for an element.
+**
+** Assumptions:
+**
+** Comments:
+**
+** $Id: Element.h 3274 2007-03-27 20:25:29Z EunseoChoi $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#ifndef __SnacViscoPlastic_Element_h__
+#define __SnacViscoPlastic_Element_h__
+
+	/* Element Information */
+	struct _SnacViscoPlastic_Element {
+		Strain			plasticStrain[Tetrahedra_Count];
+		double			viscosity[Tetrahedra_Count];
+		Strain			aps;
+	};
+
+	/* Print the contents of an Element */
+	void SnacViscoPlastic_Element_Print( void* element );
+
+#endif /* __SnacViscoPlastic_Element_h__ */

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/InitialConditions.c
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/InitialConditions.c	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/InitialConditions.c	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,138 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003,
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+**
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+** $Id: InitialConditions.c 3261 2006-11-14 21:18:05Z EunseoChoi $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#include <mpi.h>
+#include <StGermain/StGermain.h>
+#include <StGermain/FD/FD.h>
+#include "Snac/Snac.h"
+#include "types.h"
+#include "Element.h"
+#include "InitialConditions.h"
+#include "Register.h"
+#include <assert.h>
+#include <string.h>
+#include <math.h>
+#define min(a,b) ((a)<(b) ? (a):(b))
+#ifndef PATH_MAX
+#define PATH_MAX 1024
+#endif
+
+void SnacViscoPlastic_InitialConditions( void* _context, void* data ) {
+	Snac_Context*		context = (Snac_Context*)_context;
+	Element_LocalIndex	element_lI;
+	double                  mu,vis_min,dt_maxwellI;
+	double                  dt_maxwell = 0;
+	const double            mfrac      = 9.0e-01;
+	
+	// loop over the phase using the dictionary
+    
+	Dictionary_Entry_Value* materialList = Dictionary_Get( context->dictionary, "materials" );
+	int                           PhaseI = 0;
+	if( materialList ) {
+		Dictionary_Entry_Value* materialEntry = Dictionary_Entry_Value_GetFirstElement( materialList );
+		/* loop around the  phases to initialize rheology */
+		while( materialEntry ) {
+			context->materialProperty[PhaseI].rheology |= Snac_Material_ViscoPlastic;
+			mu                                          = context->materialProperty[PhaseI].mu;
+			vis_min                                     = context->materialProperty[PhaseI].vis_min;
+			dt_maxwellI                                 = mfrac*vis_min/mu;
+			dt_maxwell                                  = (PhaseI==0)?dt_maxwellI:min(dt_maxwellI,dt_maxwell);
+			PhaseI++;
+			materialEntry                               = materialEntry->next;
+			
+		}
+	}
+	else {
+		context->materialProperty[PhaseI].rheology |= Snac_Material_ViscoPlastic;
+		mu                                          = context->materialProperty[PhaseI].mu;
+		vis_min                                      = context->materialProperty[PhaseI].vis_min;
+		dt_maxwell                                   = mfrac*vis_min/mu;
+	}
+	if( context->dt > dt_maxwell) {
+		if(context->dtType == Snac_DtType_Constant) {
+			fprintf(stderr,"dt(%e) should be smaller than dt_maxwell(%e) (mu=%e vis_min=%e mfrac=%e)\n",context->dt,dt_maxwell,mu,vis_min,mfrac);
+		}
+		else    context->dt = dt_maxwell;
+	}
+	if( context->restartTimestep > 0 ) {
+		FILE*				plStrainIn;
+		char				path[PATH_MAX];
+		
+		sprintf(path, "%s/snac.plStrain.%d.%06d.restart",context->outputPath,context->rank,context->restartTimestep);
+		Journal_Firewall( (plStrainIn = fopen(path,"r")) != NULL, "Can't find %s", path );
+		
+		/* read in restart file to reconstruct the previous plastic strain.*/
+		for( element_lI = 0; element_lI < context->mesh->elementLocalCount; element_lI++ ) {
+			Snac_Element*				element = Snac_Element_At( context, element_lI );
+			SnacViscoPlastic_Element*	viscoplasticElement = ExtensionManager_Get( context->mesh->elementExtensionMgr, element,
+																SnacViscoPlastic_ElementHandle );
+			const Snac_Material* 		material = &context->materialProperty[element->material_I];
+
+			vis_min = context->materialProperty[element->material_I].vis_min;
+			if( material->yieldcriterion == mohrcoulomb ) {
+				Tetrahedra_Index	tetra_I;
+				double              depls = 0.0f;
+				double              totalVolume = 0.0f;
+				
+				for( tetra_I = 0; tetra_I < Tetrahedra_Count; tetra_I++ ) {
+					double			tetraPlStrain;
+
+					/* not the actual viscosity at restartTimestep, but doesn't affect the calculation afterwards */
+					viscoplasticElement->viscosity[tetra_I] = vis_min;
+
+					fscanf( plStrainIn, "%le", &tetraPlStrain );
+					viscoplasticElement->plasticStrain[tetra_I] = tetraPlStrain;
+					depls += viscoplasticElement->plasticStrain[tetra_I]*element->tetra[tetra_I].volume;
+					totalVolume += element->tetra[tetra_I].volume;
+				}//for tets
+				/* volume-averaged accumulated plastic strain, aps */
+				viscoplasticElement->aps = depls/totalVolume;
+			}//if(mohrcoulomb)
+		}//for elements
+		if( plStrainIn )
+			fclose( plStrainIn );
+	}// if restarting.
+	else {
+		/* Set the plastic element initial conditions */
+		for( element_lI = 0; element_lI < context->mesh->elementLocalCount; element_lI++ ) {
+			Snac_Element*		element = Snac_Element_At( context, element_lI );
+			SnacViscoPlastic_Element*	viscoplasticElement = ExtensionManager_Get( context->mesh->elementExtensionMgr, element,
+																					SnacViscoPlastic_ElementHandle );
+			viscoplasticElement->aps = 0.0;
+			vis_min = context->materialProperty[element->material_I].vis_min;
+			Tetrahedra_Index	tetra_I;
+			for( tetra_I = 0; tetra_I < Tetrahedra_Count; tetra_I++ ) {
+				viscoplasticElement->plasticStrain[tetra_I] = 0.0;
+				viscoplasticElement->viscosity[tetra_I] = vis_min;
+			}//for tets
+		}//for elements
+	}//else
+}//function

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/InitialConditions.h
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/InitialConditions.h	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/InitialConditions.h	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,45 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003,
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+**
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+*/
+/** \file
+** Role:
+**
+** Assumptions:
+**
+** Comments:
+**
+** $Id: InitialConditions.h 3131 2005-08-13 01:48:13Z EunseoChoi $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#ifndef __SnacViscoPlastic_InitialConditions_h__
+#define __SnacViscoPlastic_InitialConditions_h__
+
+	void SnacViscoPlastic_InitialConditions( void* _context, void* data );
+
+#endif /* __SnacViscoPlastic_InitialConditions_h__ */

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Make.mm
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Make.mm	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Make.mm	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,67 @@
+##~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+##
+## Copyright (C), 2003, 
+##	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+##	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+##	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+##
+## Authors:
+##	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+##	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+##	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+##	Luc Lavier, Research Scientist, Caltech.
+##
+## This program 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, or (at your option) any
+## later version.
+## 
+## This program 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 program; if not, write to the Free Software
+## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+##
+## $Id: Make.mm 955 2004-03-04 18:43:37Z SteveQuenette $
+##
+##~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+include Makefile.def
+
+PROJECT = Snac
+PACKAGE = ${def_mod}module
+
+PROJ_LIB = $(BLD_LIBDIR)/$(PACKAGE).a
+PROJ_DLL = $(BLD_LIBDIR)/$(PACKAGE).$(EXT_SO)
+PROJ_TMPDIR = $(BLD_TMPDIR)/$(PROJECT)/$(PACKAGE)
+PROJ_CLEAN += $(PROJ_LIB) $(PROJ_DLL)
+PROJ_INCDIR = $(BLD_INCDIR)/${def_inc}
+
+PROJ_SRCS = ${def_srcs}
+PROJ_CC_FLAGS += -I$(BLD_INCDIR)/$(PROJECT) -I$(BLD_INCDIR)/Snac -I$(BLD_INCDIR)/StGermain -I$(STGERMAIN_INCDIR)/ -I$(STGERMAIN_INCDIR)/StGermain `xml2-config --cflags` -DCURR_MODULE_NAME=\"${def_mod}\"
+PROJ_LIBRARIES = -L$(BLD_LIBDIR) -L$(STGERMAIN_LIBDIR)/ -lSnac -lStGermain `xml2-config --libs` $(MPI_LIBPATH) $(MPI_LIBS)
+LCCFLAGS = 
+
+# I keep file lists to build a monolith .so from a set of .a's
+PROJ_OBJS_IN_TMP = ${addprefix $(PROJECT)/$(PACKAGE)/, ${addsuffix .o, ${basename $(PROJ_SRCS)}}}
+PROJ_OBJLIST = $(BLD_TMPDIR)/$(PROJECT).$(PACKAGE).objlist
+
+all: $(PROJ_LIB) DLL createObjList export
+
+DLL: product_dirs $(PROJ_OBJS)
+	$(CC) -o $(PROJ_DLL) $(PROJ_OBJS) $(COMPILER_LCC_SOFLAGS) $(LCCFLAGS) $(PROJ_LIBRARIES) $(EXTERNAL_LIBPATH) $(EXTERNAL_LIBS)
+
+
+
+createObjList:: 
+	@echo ${PROJ_OBJS_IN_TMP} | cat > ${PROJ_OBJLIST}
+
+#export:: export-headers
+export:: export-headers export-libraries
+EXPORT_HEADERS = ${def_hdrs}
+EXPORT_LIBS = $(PROJ_LIB) $(PROJ_DLL)
+
+check::

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Makefile.def
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Makefile.def	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Makefile.def	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,61 @@
+##~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+##
+## Copyright (C), 2003, 
+##	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+##	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+##	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+##
+## Authors:
+##	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+##	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+##	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+##	Luc Lavier, Research Scientist, Caltech.
+##	Luc Lavier, Caltech.
+##
+## This program 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, or (at your option) any
+## later version.
+## 
+## This program 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 program; if not, write to the Free Software
+## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+##
+## $Id: Makefile.def 1677 2004-07-20 10:30:34Z SteveQuenette $
+##
+##~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ 
+def_mod = SnacViscoPlastic
+def_inc = Snac/ViscoPlastic
+
+def_srcs = \
+	Node.c \
+	Element.c \
+	Mesh.c \
+	Context.c \
+	ConstructExtensions.c \
+	Constitutive.c \
+	Output.c \
+	Register.c \
+	InitialConditions.c \
+	Remesh.c \
+
+def_hdrs = \
+	types.h \
+	Node.h \
+	Element.h \
+	Mesh.h \
+	Context.h \
+	ConstructExtensions.h \
+	Constitutive.h \
+	Output.h \
+	Register.h \
+	InitialConditions.h \
+	Remesh.h \
+	ViscoPlastic.h
+

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Mesh.c
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Mesh.c	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Mesh.c	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,52 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003,
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+**
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+** $Id: Mesh.c 3095 2005-07-13 09:50:46Z LukeHodkinson $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#include <mpi.h>
+#include <StGermain/StGermain.h>
+#include <StGermain/FD/FD.h>
+
+#include "Snac/Snac.h"
+#include "types.h"
+#include "Mesh.h"
+
+#include <stdio.h>
+
+
+/*
+** Due to the rewrite this func is severely useless.  Need to fix it.
+*/
+
+void SnacViscoPlastic_Mesh_Print( void* mesh, Stream* stream ) {
+	SnacViscoPlastic_Mesh*	self = (SnacViscoPlastic_Mesh*)mesh;
+
+	Journal_Printf( stream, "SnacViscoPlastic_Mesh:\n" );
+
+}

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Mesh.h
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Mesh.h	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Mesh.h	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,55 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003,
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+**
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+*/
+/** \file
+** Role:
+**	Snac exchanger properties extensions to the mesh construct.
+**
+** Assumptions:
+**
+** Comments:
+**
+** $Id: Mesh.h 3173 2005-11-21 23:47:09Z LukeHodkinson $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#ifndef __SnacViscoPlastic_Mesh_h__
+#define __SnacViscoPlastic_Mesh_h__
+
+
+	/* Mesh Information */
+	struct _SnacViscoPlastic_Mesh {
+		Snac_Node*	newNodes;
+	};
+	
+	/* Print the contents of a mesh */
+	void SnacViscoPlastic_Mesh_Print( void* mesh, Stream* stream );
+	
+
+#endif /* __SnacViscoPlastic_Mesh_h__ */
+

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Node.c
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Node.c	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Node.c	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,47 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003, 
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+** 
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+** $Id: Node.c 1792 2004-07-30 05:42:39Z SteveQuenette $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#include <mpi.h>
+#include <StGermain/StGermain.h>
+#include <StGermain/FD/FD.h>
+#include "Snac/Snac.h"
+#include "types.h"
+#include "Node.h"
+#include <stdio.h>
+
+void SnacViscoPlastic_Node_Print( void* node ) {
+	SnacViscoPlastic_Node*	self = (SnacViscoPlastic_Node*)node;
+	Tetrahedra_Index	tetra_I;
+	
+	printf( "SnacViscoPlastic_Node:\n" );
+	printf( "\tplasticStrainSPR: %g,\n", self->plStrainSPR );
+	printf( "\tviscositySPR: %g", self->viscositySPR );
+}

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Node.h
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Node.h	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Node.h	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,53 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003,
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+**
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+*/
+/** \file
+** Role:
+**	Snac plastic properties for an element.
+**
+** Assumptions:
+**
+** Comments:
+**
+** $Id: Node.h 1720 2004-07-22 18:33:41Z EunseoChoi $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#ifndef __SnacViscoPlastic_Node_h__
+#define __SnacViscoPlastic_Node_h__
+
+	/* Node Information */
+	struct _SnacViscoPlastic_Node {
+		Strain			plStrainSPR;
+		double			viscositySPR;
+	};
+
+	/* Print the contents of an Node */
+	void SnacViscoPlastic_Node_Print( void* element );
+
+#endif /* __SnacViscoPlastic_Node_h__ */

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Output.c
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Output.c	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Output.c	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,235 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003,
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+**
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+** $Id: Output.c 3125 2005-07-25 21:32:45Z EunseoChoi $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#include <mpi.h>
+#include <StGermain/StGermain.h>
+#include <StGermain/FD/FD.h>
+#include "Snac/Snac.h"
+#include "types.h"
+#include "Output.h"
+#include "Context.h"
+#include "Element.h"
+#include "Register.h"
+#include <stdio.h>
+#include <math.h>
+#include <assert.h>
+
+
+void _SnacViscoPlastic_WritePlasticStrain( void* _context ) {
+	Snac_Context*				context = (Snac_Context*) _context;
+
+	if( isTimeToDump( context ) )
+		_SnacViscoPlastic_DumpPlasticStrain( context );
+
+	if( isTimeToCheckpoint( context ) )
+		_SnacViscoPlastic_CheckpointPlasticStrain( context );
+}
+
+
+void _SnacViscoPlastic_DumpPlasticStrain( void* _context ) {
+	Snac_Context*				context = (Snac_Context*) _context;
+	SnacViscoPlastic_Context*	contextExt = ExtensionManager_Get(
+												context->extensionMgr,
+												context,
+												SnacViscoPlastic_ContextHandle );
+	Element_LocalIndex			element_lI;
+
+#if DEBUG
+	printf( "In %s()\n", __func__ );
+#endif
+	
+	for( element_lI = 0; element_lI < context->mesh->elementLocalCount; element_lI++ ) {
+		Snac_Element* 				element = Snac_Element_At( context, element_lI );
+		SnacViscoPlastic_Element*	elementExt = ExtensionManager_Get(
+													context->mesh->elementExtensionMgr,
+													element,
+													SnacViscoPlastic_ElementHandle );
+		float plasticStrain = elementExt->aps;
+		fwrite( &plasticStrain, sizeof(float), 1, contextExt->plStrainOut );
+	}
+	fflush( contextExt->plStrainOut );
+}
+
+
+void _SnacViscoPlastic_CheckpointPlasticStrain( void* _context ) {
+	Snac_Context*				context = (Snac_Context*) _context;
+	SnacViscoPlastic_Context*	contextExt = ExtensionManager_Get(
+												context->extensionMgr,
+												context,
+												SnacViscoPlastic_ContextHandle );
+	Element_LocalIndex			element_lI;
+
+#if DEBUG
+	printf( "In %s()\n", __func__ );
+#endif
+	
+	for( element_lI = 0; element_lI < context->mesh->elementLocalCount; element_lI++ ) {
+		Snac_Element* 				element = Snac_Element_At( context, element_lI );
+		SnacViscoPlastic_Element*	elementExt = ExtensionManager_Get(
+													context->mesh->elementExtensionMgr,
+													element,
+													SnacViscoPlastic_ElementHandle );
+		Tetrahedra_Index	tetra_I;
+		for( tetra_I = 0; tetra_I < Tetrahedra_Count; tetra_I++ ) {
+			float plasticStrain = elementExt->plasticStrain[tetra_I];
+			fwrite( &plasticStrain, sizeof(float), 1, contextExt->plStrainCheckpoint );
+		}
+		fflush( contextExt->plStrainCheckpoint );
+	}
+}
+
+
+void _SnacViscoPlastic_WriteViscosity( void* _context ) {
+	Snac_Context*				context = (Snac_Context*) _context;
+
+	if( isTimeToDump( context ) )
+		_SnacViscoPlastic_DumpViscosity( context );
+
+	if( isTimeToCheckpoint( context ) )
+		_SnacViscoPlastic_CheckpointViscosity( context );
+}
+
+
+void _SnacViscoPlastic_DumpViscosity( void* _context ) {
+	Snac_Context*				context = (Snac_Context*) _context;
+	SnacViscoPlastic_Context*	contextExt = ExtensionManager_Get(
+												context->extensionMgr,
+												context,
+												SnacViscoPlastic_ContextHandle );
+	Element_LocalIndex			element_lI;
+
+#if DEBUG
+	printf( "In %s()\n", __func__ );
+#endif
+	
+	for( element_lI = 0; element_lI < context->mesh->elementLocalCount; element_lI++ ) {
+		Snac_Element* 				element = Snac_Element_At( context, element_lI );
+		SnacViscoPlastic_Element*	elementExt = ExtensionManager_Get(
+													context->mesh->elementExtensionMgr,
+													element,
+													SnacViscoPlastic_ElementHandle );
+		Tetrahedra_Index			tetra_I;
+		double					    viscosity = 0.0f;
+		float						logviscosity = 0.0f;
+
+		/* Take average of tetra viscosity for the element */
+		for( tetra_I = 0; tetra_I < Tetrahedra_Count; tetra_I++ )
+			viscosity += elementExt->viscosity[tetra_I]/Tetrahedra_Count;
+		assert(viscosity>0.0);
+		logviscosity = log10(viscosity);
+		fwrite( &logviscosity, sizeof(float), 1, contextExt->viscOut );
+	}
+	fflush( contextExt->viscOut );
+}
+
+
+void _SnacViscoPlastic_CheckpointViscosity( void* _context ) {
+	Snac_Context*				context = (Snac_Context*) _context;
+	SnacViscoPlastic_Context*	contextExt = ExtensionManager_Get(
+												context->extensionMgr,
+												context,
+												SnacViscoPlastic_ContextHandle );
+	Element_LocalIndex			element_lI;
+	
+#if DEBUG
+	printf( "In %s()\n", __func__ );
+#endif
+	
+	for( element_lI = 0; element_lI < context->mesh->elementLocalCount; element_lI++ ) {
+		Snac_Element* 					element = Snac_Element_At( context, element_lI );
+		SnacViscoPlastic_Element*		elementExt = ExtensionManager_Get(
+														context->mesh->elementExtensionMgr,
+														element,
+														SnacViscoPlastic_ElementHandle );
+		Tetrahedra_Index		tetra_I;
+		double					viscosity = 0.0f;
+		float					logviscosity = 0.0f;
+
+		for( tetra_I = 0; tetra_I < Tetrahedra_Count; tetra_I++ ) {
+			viscosity = elementExt->viscosity[tetra_I];
+			assert(viscosity>0.0);
+			logviscosity = log10(viscosity);
+			fwrite( &logviscosity, sizeof(float), 1, contextExt->viscCheckpoint );
+		}
+	}
+	fflush( contextExt->viscCheckpoint );
+}
+
+
+#if 0
+void _SnacViscoPlastic_DumpPlasticStrainTensor( void* _context ) {
+	Snac_Context*				context = (Snac_Context*) _context;
+	SnacViscoPlastic_Context*			contextExt = ExtensionManager_Get(
+							context->extensionMgr,
+							context,
+							SnacViscoPlastic_ContextHandle );
+
+#if DEBUG
+	printf( "In %s()\n", __func__ );
+#endif
+
+
+	if( context->timeStep ==0 || (context->timeStep-1) % context->dumpEvery == 0 ) {
+		Element_LocalIndex			element_lI;
+
+		for( element_lI = 0; element_lI < context->mesh->elementLocalCount; element_lI++ ) {
+			Snac_Element* 				element = Snac_Element_At( context, element_lI );
+			SnacViscoPlastic_Element*			elementExt = ExtensionManager_Get(
+																				  context->mesh->elementExtensionMgr,
+																				  element,
+																				  SnacViscoPlastic_ElementHandle );
+			const Snac_Material* material = &context->materialProperty[element->material_I];
+			Tetrahedra_Index tetra_I;
+
+
+			if( material->yieldcriterion == druckerprager ) {
+				for( tetra_I = 0; tetra_I < Tetrahedra_Count; tetra_I++ ) {
+					Index i,j;
+					float tensor[3][3];
+					for(i=0;i<3;i++)
+						for(j=0;j<3;j++) {
+							tensor[i][j] = elementExt->plasticstrainTensor[tetra_I][i][j];
+							fwrite( &tensor[i][j], sizeof(float), 1, contextExt->plstrainTensorOut );
+						}
+				}
+			}
+			else if( material->yieldcriterion == mohrcoulomb ) {
+				for( tetra_I = 0; tetra_I < Tetrahedra_Count; tetra_I++ ) {
+					float tetraStrain;
+					tetraStrain = elementExt->plasticStrain[tetra_I];
+					fwrite( &tetraStrain, sizeof(float), 1, contextExt->plstrainTensorOut );
+				}
+			}
+		}
+		fflush( contextExt->plstrainTensorOut );
+	}
+}
+#endif

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Output.h
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Output.h	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Output.h	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,43 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003,
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+**
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+** $Id: Output.h 3104 2005-07-14 22:16:41Z EunseoChoi $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#ifndef _SnacViscoPlastic_Output_
+#define _SnacViscoPlastic_Output_
+
+	void _SnacViscoPlastic_WritePlasticStrain( void* _context );
+	void _SnacViscoPlastic_WriteViscosity( void* _context );
+	void _SnacViscoPlastic_DumpPlasticStrain( void* _context );
+	void _SnacViscoPlastic_CheckpointPlasticStrain( void* _context );
+	void _SnacViscoPlastic_DumpViscosity( void* _context );
+	void _SnacViscoPlastic_CheckpointViscosity( void* _context );
+	void _SnacViscoPlastic_DumpPlasticStrainTensor( void* _context );
+
+#endif

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Register.c
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Register.c	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Register.c	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,168 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003,
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+**
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+** $Id: Register.c 3243 2006-10-12 09:04:00Z SteveQuenette $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#include <mpi.h>
+#include <StGermain/StGermain.h>
+#include <StGermain/FD/FD.h>
+#include "Snac/Snac.h"
+#include "types.h"
+#include "Node.h"
+#include "Element.h"
+#include "Mesh.h"
+#include "Context.h"
+#include "Constitutive.h"
+#include "ConstructExtensions.h"
+#include "Output.h"
+#include "InitialConditions.h"
+#include "Remesh.h"
+#include "Register.h"
+#include <stdio.h>
+
+/* Textual name of this class */
+const Type SnacViscoPlastic_Type = "SnacViscoPlastic";
+
+ExtensionInfo_Index SnacViscoPlastic_NodeHandle;
+ExtensionInfo_Index SnacViscoPlastic_ElementHandle;
+ExtensionInfo_Index SnacViscoPlastic_MeshHandle;
+ExtensionInfo_Index SnacViscoPlastic_ContextHandle;
+
+Index _SnacViscoPlastic_Register( PluginsManager* pluginsMgr ) {
+	return PluginsManager_Submit( pluginsMgr, 
+				      SnacViscoPlastic_Type, 
+				      "0", 
+				      _SnacViscoPlastic_DefaultNew );
+}
+
+
+void* _SnacViscoPlastic_DefaultNew( Name name ) {
+	return _Codelet_New( sizeof(Codelet), 
+			     SnacViscoPlastic_Type, 
+			     _Codelet_Delete, 
+			     _Codelet_Print, 
+			     _Codelet_Copy, 
+			     _SnacViscoPlastic_DefaultNew, 
+			     _SnacViscoPlastic_Construct, 
+			     _Codelet_Build, 
+			     _Codelet_Initialise, 
+			     _Codelet_Execute, 
+			     _Codelet_Destroy, 
+			     name );
+}
+
+
+void _SnacViscoPlastic_Construct( void* component, Stg_ComponentFactory* cf, void* data ) {
+	Snac_Context*	context;
+	EntryPoint* 	recoverNodeEP;
+	EntryPoint* 	interpolateNodeEP;
+	EntryPoint* 	interpolateElementEP;
+
+	/* Retrieve context. */
+	context = (Snac_Context*)Stg_ComponentFactory_ConstructByName( cf, "context", Snac_Context, True, data ); 
+
+	#ifdef DEBUG
+		printf( "In: _SnacViscoPlastic_Register( void*, void* )\n" );
+	#endif
+
+	/* Add extensions to nodes, elements and the context */
+	SnacViscoPlastic_NodeHandle = ExtensionManager_Add( context->mesh->nodeExtensionMgr, SnacViscoPlastic_Type, sizeof(SnacViscoPlastic_Node) );
+	SnacViscoPlastic_ElementHandle = ExtensionManager_Add( context->mesh->elementExtensionMgr, SnacViscoPlastic_Type, sizeof(SnacViscoPlastic_Element) );
+	SnacViscoPlastic_MeshHandle = ExtensionManager_Add( context->meshExtensionMgr, SnacViscoPlastic_Type, sizeof(SnacViscoPlastic_Mesh) );
+	SnacViscoPlastic_ContextHandle = ExtensionManager_Add( context->extensionMgr, SnacViscoPlastic_Type, sizeof(SnacViscoPlastic_Context) );
+
+	#ifdef DEBUG
+		printf( "\tcontext extension handle: %u\n", SnacViscoPlastic_ContextHandle );
+		printf( "\tmesh extension handle: %u\n", SnacViscoPlastic_MeshHandle );
+		printf( "\tnode extension handle: %u\n", SnacViscoPlastic_ElementHandle );
+		printf( "\telement extension handle: %u\n", SnacViscoPlastic_NodeHandle );
+	#endif
+
+	/* Add extensions to the entry points */
+	EntryPoint_Append(
+		Context_GetEntryPoint( context,	Snac_EP_Constitutive ),
+		SnacViscoPlastic_Type,
+		SnacViscoPlastic_Constitutive,
+		SnacViscoPlastic_Type );
+	EntryPoint_InsertBefore(
+		Context_GetEntryPoint( context,	AbstractContext_EP_Initialise ),
+		"SnacTimeStepZero",
+		SnacViscoPlastic_Type,
+		SnacViscoPlastic_InitialConditions,
+		SnacViscoPlastic_Type );
+	EntryPoint_Prepend( /* Dump the initial plastic strain */
+		Context_GetEntryPoint( context, AbstractContext_EP_Execute ),
+		"SnacViscoPlastic_WritePlasticStrain",
+		_SnacViscoPlastic_WritePlasticStrain,
+		SnacViscoPlastic_Type );
+	EntryPoint_Append( /* and dump each loop */
+		Context_GetEntryPoint( context, Snac_EP_CalcStresses ),
+		"SnacViscoPlastic_WritePlasticStrain",
+		_SnacViscoPlastic_WritePlasticStrain,
+		SnacViscoPlastic_Type );
+	EntryPoint_Prepend( /* Dump the initial viscosity */
+		Context_GetEntryPoint( context, AbstractContext_EP_Execute ),
+		"SnacViscoPlastic_WriteViscosity",
+		_SnacViscoPlastic_WriteViscosity,
+		SnacViscoPlastic_Type );
+	EntryPoint_Append( /* and dump visocisty each loop */
+		Context_GetEntryPoint( context, Snac_EP_CalcStresses ),
+		"SnacViscoPlastic_WriteViscosity",
+		_SnacViscoPlastic_WriteViscosity,
+		SnacViscoPlastic_Type );
+
+	/* Add extensions to the interpolate element entry point, but it will only exist if the remesher is loaded. */
+	recoverNodeEP = Context_GetEntryPoint( context,	"SnacRemesher_EP_RecoverNode" );
+	if( recoverNodeEP ) {
+		EntryPoint_Append(
+						  recoverNodeEP,
+						  SnacViscoPlastic_Type,
+						  _SnacViscoPlastic_RecoverNode,
+						  SnacViscoPlastic_Type );
+	}
+	interpolateNodeEP = Context_GetEntryPoint( context,	"SnacRemesher_EP_InterpolateNode" );
+	if( interpolateNodeEP ) {
+		EntryPoint_Append(
+						  interpolateNodeEP,
+						  SnacViscoPlastic_Type,
+						  _SnacViscoPlastic_InterpolateNode,
+						  SnacViscoPlastic_Type );
+	}
+	interpolateElementEP = Context_GetEntryPoint( context,	"SnacRemesher_EP_InterpolateElement" );
+	if( interpolateElementEP ) {
+		EntryPoint_Append(
+						  interpolateElementEP,
+						  SnacViscoPlastic_Type,
+						  _SnacViscoPlastic_InterpolateElement,
+						  SnacViscoPlastic_Type );
+	}
+
+	/* Construct. */
+	_SnacViscoPlastic_ConstructExtensions( context, data );
+}

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Register.h
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Register.h	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Register.h	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,61 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003, 
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+** 
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+*/
+/** \file
+** Role:
+**
+** Assumptions:
+**	Only one can be registered at the time (limitation).
+**
+** Comments:
+**
+** $Id: Register.h 3243 2006-10-12 09:04:00Z SteveQuenette $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#ifndef __SnacViscoPlastic_Register_h__
+#define __SnacViscoPlastic_Register_h__
+	
+	/* Textual name of this class */
+	extern const Type SnacViscoPlastic_Type;
+	
+	extern ExtensionInfo_Index SnacViscoPlastic_NodeHandle;
+
+	extern ExtensionInfo_Index SnacViscoPlastic_ElementHandle;
+
+	extern ExtensionInfo_Index SnacViscoPlastic_MeshHandle;
+
+	extern ExtensionInfo_Index SnacViscoPlastic_ContextHandle;
+	
+	Index _SnacViscoPlastic_Register( PluginsManager* pluginsMgr );
+
+	void* _SnacViscoPlastic_DefaultNew( Name name );
+
+	void _SnacViscoPlastic_Construct( void* component, Stg_ComponentFactory* cf, void* data );
+	
+#endif /* __SnacViscoPlastic_Register_h__ */

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Remesh.c
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Remesh.c	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Remesh.c	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,324 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003,
+**	Pururav Thoutireddy, 
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**      110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Pururav Thoutireddy, Staff Scientist, Caltech
+**      Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+**
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+** $Id: Remesh.c 3250 2006-10-23 06:15:18Z LukeHodkinson $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#include <mpi.h>
+#include <StGermain/StGermain.h>
+#include <StGermain/FD/FD.h>
+#include "Snac/Snac.h"
+#include "types.h"
+#include "Node.h"
+#include "Element.h"
+#include "Mesh.h"
+#include "Remesh.h"
+#include "Register.h"
+#include <gsl/gsl_vector.h>
+#include <gsl/gsl_matrix.h>
+#include <gsl/gsl_linalg.h>
+
+
+void _SnacViscoPlastic_RecoverNode( void* _context, unsigned nodeInd )
+{
+	Snac_Context*			context = (Snac_Context*)_context;
+	Mesh*					mesh = context->mesh;
+	MeshLayout*				layout = (MeshLayout*)mesh->layout;
+	HexaMD*					decomp = (HexaMD*)layout->decomp;
+	NodeLayout*				nLayout = layout->nodeLayout;
+
+	Snac_Node*				node = Snac_Node_At( context, nodeInd );
+	SnacViscoPlastic_Node*	nodeExt = ExtensionManager_Get( context->mesh->nodeExtensionMgr, 
+															node, 
+															SnacViscoPlastic_NodeHandle );
+	Coord*					coord = Snac_NodeCoord_P( context, nodeInd );
+
+	Index 					nodeElementCount = context->mesh->nodeElementCountTbl[nodeInd];
+	Index 					nodeElement_I;
+	Element_DomainIndex*	elements;
+	gsl_matrix*				matA;
+	gsl_vector* 			vecaPlStrain;
+	gsl_vector* 			vecbPlStrain;
+	gsl_vector* 			vecaViscosity;
+	gsl_vector* 			vecbViscosity;
+	Index 	 	 	 	 	i; 
+	IJK						ijk;
+	Node_GlobalIndex		node_gI = _MeshDecomp_Node_LocalToGlobal1D( decomp, nodeInd );
+	Node_GlobalIndex		gNodeI = decomp->nodeGlobal3DCounts[0];
+	Node_GlobalIndex		gNodeJ = decomp->nodeGlobal3DCounts[1];
+	Node_GlobalIndex		gNodeK = decomp->nodeGlobal3DCounts[2];
+	Node_GlobalIndex		intNode_gI;
+	Node_DomainIndex		intNode_lI;
+	unsigned int			isBoundaryNode=0, patchCenterNum=1, patchCenterI, patchCenterList[2];
+
+	RegularMeshUtils_Node_1DTo3D( decomp, node_gI, &ijk[0], &ijk[1], &ijk[2] );
+	
+	/* If boundary node, find a (topologically?) nearest interior node. 
+	   Loosely following 
+	       Khoei and Gharehbaghi, 2007, The superconvergent patch recovery techinique and data transfer operators in 3D plasticity problems,
+	       Finite Elements in Analysis and Design 43 (2007) 630-- 648. */
+	if( (gNodeI>2) && (ijk[0]==0) ) {
+		ijk[0] += 1;
+		isBoundaryNode = 1;
+	}
+	if( (gNodeI>2) && (ijk[0]==decomp->nodeGlobal3DCounts[0]-1) ) {
+		ijk[0] -= 1;
+		isBoundaryNode = 1;
+	}
+	if( (gNodeJ>2) && (ijk[1]==0) ) {
+		ijk[1] += 1;
+		isBoundaryNode = 1;
+	}
+	if( (gNodeJ>2) && (ijk[1]==decomp->nodeGlobal3DCounts[1]-1) ) {
+		ijk[1] -= 1;
+		isBoundaryNode = 1;
+	}
+	if( (gNodeK>2) && (ijk[2]==0) ) {
+		ijk[2] += 1;
+		isBoundaryNode = 1;
+	}
+	if( (gNodeK>2) && (ijk[2]==decomp->nodeGlobal3DCounts[2]-1) ) {
+		ijk[2] -= 1;
+		isBoundaryNode = 1;
+	}
+	/* node_lI itself always becomes a patch center,
+	 and if the current node is a boundary node, find an interior node and add it to the patch center list. */
+	patchCenterList[0] = nodeInd; 
+	if( isBoundaryNode ) {
+		patchCenterNum=2;
+		intNode_gI = ijk[0]+gNodeI*ijk[1]+gNodeI*gNodeJ*ijk[2];
+		patchCenterList[1] = Mesh_NodeMapGlobalToLocal( mesh, intNode_gI );
+	}
+		
+	/* initialize gsl vectors and matrix. */
+	matA = gsl_matrix_alloc(4,4); gsl_matrix_set_zero( matA );
+	vecaPlStrain = gsl_vector_alloc(4); gsl_vector_set_zero( vecaPlStrain );
+	vecbPlStrain = gsl_vector_alloc(4); gsl_vector_set_zero( vecbPlStrain );
+	vecaViscosity = gsl_vector_alloc(4); gsl_vector_set_zero( vecaViscosity );
+	vecbViscosity = gsl_vector_alloc(4); gsl_vector_set_zero( vecbViscosity );
+			
+	/* For each patch center */
+	for( patchCenterI=0; patchCenterI < patchCenterNum; patchCenterI++ ) {
+		/* For each incident element, find inicident tets. */
+		for( nodeElement_I = 0; nodeElement_I < nodeElementCount; nodeElement_I++ ) {
+			Element_DomainIndex		element_dI = context->mesh->nodeElementTbl[patchCenterList[patchCenterI]][nodeElement_I];
+
+			if( element_dI < mesh->elementDomainCount ) {
+				Index elementTetra_I;
+				Snac_Element* 				element = Snac_Element_At( context, element_dI );
+				SnacViscoPlastic_Element*		elementExt = ExtensionManager_Get( context->mesh->elementExtensionMgr, 
+																				   element, 
+																				   SnacViscoPlastic_ElementHandle );
+
+				/* Extract the element's node indices.  Note that there should always be eight of these. */
+				{
+					Element_GlobalIndex	element_gI;
+					
+					elements = Memory_Alloc_Array( Node_DomainIndex, nodeElementCount, "SnacRemesher" );
+					element_gI = Mesh_ElementMapDomainToGlobal( mesh, element_dI );
+					nLayout->buildElementNodes( nLayout, element_gI, elements );
+				}
+				
+				/* Convert global node indices to domain. */
+				{
+					unsigned	eltNode_i;
+					
+					for( eltNode_i = 0; eltNode_i < nodeElementCount; eltNode_i++ ) {
+						elements[eltNode_i] = Mesh_NodeMapGlobalToDomain( mesh, elements[eltNode_i] );
+					}
+				}
+
+				/* For each incident tetrahedron in the incident element,
+				   add up contributions to P, A, and b as in Zienkiewicz and Zhu (1992), p. 1336 */
+				for( elementTetra_I = 0; elementTetra_I < Node_Element_Tetrahedra_Count;elementTetra_I++ ) {
+					Tetrahedra_Index	tetra_I = NodeToTetra[nodeElement_I][elementTetra_I];
+					Coord	tCrds[4];
+					double 	positionP[4] = {1.0,0.0,0.0,0.0};
+					Index 	ii,jj;
+
+					/* Extract the tetrahedron's coordinates. */
+					Vector_Set( tCrds[0], mesh->nodeCoord[elements[TetraToNode[tetra_I][0]]] );
+					Vector_Set( tCrds[1], mesh->nodeCoord[elements[TetraToNode[tetra_I][1]]] );
+					Vector_Set( tCrds[2], mesh->nodeCoord[elements[TetraToNode[tetra_I][2]]] );
+					Vector_Set( tCrds[3], mesh->nodeCoord[elements[TetraToNode[tetra_I][3]]] );
+					
+					for(ii=1;ii<4;ii++)
+						for(jj=0;jj<4;jj++)
+							positionP[ii] += (0.25f * tCrds[jj][ii-1]);
+					
+					for(ii=0;ii<4;ii++) {
+						double tmp = gsl_vector_get(vecbPlStrain,ii) + positionP[ii]*elementExt->plasticStrain[tetra_I];
+						gsl_vector_set(vecbPlStrain,ii,tmp);
+						/* 					tmp = gsl_vector_get(vecbViscosity,ii) + positionP[ii]*elementExt->viscosity[tetra_I]; */
+						/* 					gsl_vector_set(vecbViscosity,ii,tmp);  */
+					
+						for(jj=0;jj<4;jj++) {
+							tmp = gsl_matrix_get(matA,ii,jj) + positionP[ii]*positionP[jj];
+							gsl_matrix_set(matA,ii,jj,tmp);
+						}
+					} /* end of verteces of a tet. */
+/* 					if(context->rank==0 && nodeInd==5375) */
+/* 						fprintf(stderr,"rank:%d node:%d elem:%d tet:%d plStrain: %e\n", */
+/* 								context->rank,nodeInd,element_dI,tetra_I,elementExt->plasticStrain[tetra_I]); */
+				} /* end of incident tets. */
+			} /* if within my domain */
+		} /* end of incident elements. */
+	} /* end of patchCenterI */
+
+		
+	/* compute parameter vectors. */
+	{
+		int s;
+		gsl_permutation * p = gsl_permutation_alloc (4);
+     
+		gsl_linalg_LU_decomp (matA, p, &s);
+		gsl_linalg_LU_solve (matA, p, vecbPlStrain, vecaPlStrain);
+/* 		gsl_linalg_LU_solve (matA, p, vecbViscosity, vecaViscosity); */
+		gsl_permutation_free (p);
+	}	
+
+	/* Recover using the parameter vectors. */
+	nodeExt->plStrainSPR = gsl_vector_get(vecaPlStrain,0);
+/* 	nodeExt->viscositySPR = gsl_vector_get(vecaViscosity,0); */
+	for(i=0;i<3;i++) {
+		nodeExt->plStrainSPR += gsl_vector_get(vecaPlStrain,i+1)*(*coord)[i];
+/* 		nodeExt->viscositySPR += gsl_vector_get(vecaViscosity,i+1)*(*coord)[i]; */
+	}
+
+/* 	if(context->rank==0) */
+/* 		fprintf(stderr,"rank:%d node:%d plStrainSPR:%e\n",context->rank,nodeInd, */
+/* 				nodeExt->plStrainSPR); */
+
+	/* free gsl vectors and matrix. */
+	gsl_matrix_free( matA );
+	gsl_vector_free( vecaPlStrain );
+	gsl_vector_free( vecbPlStrain );
+	gsl_vector_free( vecaViscosity );
+	gsl_vector_free( vecbViscosity );
+
+	/* Free the element node array. */
+	FreeArray( elements );
+	
+	/* end of recovery. */
+}
+
+
+void _SnacViscoPlastic_InterpolateNode( void* _context,
+								   unsigned nodeInd, unsigned elementInd, unsigned tetInd, 
+								   unsigned* tetNodeInds, double* weights, 
+								   Snac_Node* dstNodes )
+{
+	Snac_Context*			context = (Snac_Context*)_context;
+	Mesh*					mesh = context->mesh;
+	NodeLayout*				nLayout = mesh->layout->nodeLayout;
+	Snac_Node*				dstNode = (Snac_Node*)ExtensionManager_At( context->mesh->nodeExtensionMgr, 
+																	   dstNodes, 
+																	   nodeInd );
+	SnacViscoPlastic_Node*		dstNodeExt = ExtensionManager_Get( context->mesh->nodeExtensionMgr, 
+															   dstNode, 
+															   SnacViscoPlastic_NodeHandle );
+	Index					tetNode_i;
+
+/* 	SnacViscoPlastic_Node_Print( dstNodeExt ); */
+
+	/* Extract the element's node indices.  Note that there should always be eight of these. */
+	Node_DomainIndex*	eltNodes;
+	unsigned int nEltNodes = 8;
+	{
+		Element_GlobalIndex	gEltInd;
+
+		eltNodes = Memory_Alloc_Array( Node_DomainIndex, nEltNodes, "SnacViscoPlastic" );
+		gEltInd = Mesh_ElementMapDomainToGlobal( mesh, elementInd );
+		nLayout->buildElementNodes( nLayout, gEltInd, eltNodes );
+	}
+
+	/* Convert global node indices to local. */
+	{
+		unsigned	eltNode_i;
+
+		for( eltNode_i = 0; eltNode_i < nEltNodes; eltNode_i++ ) {
+			eltNodes[eltNode_i] = Mesh_NodeMapGlobalToDomain( mesh, eltNodes[eltNode_i] );
+		}
+	}
+
+	/* Clear the plastic strain. */
+	dstNodeExt->plStrainSPR = 0.0;
+/* 	dstNodeExt->viscositySPR = 0.0; */
+
+	/* Loop over each contributing node. */
+/* 	fprintf(stderr,"node=%d ",nodeInd ); */
+	for( tetNode_i = 0; tetNode_i < 4; tetNode_i++ ) {
+
+		/* Where is this contibution coming from? */
+		Snac_Node* srcNode = Snac_Node_At( context, eltNodes[tetNodeInds[tetNode_i]] );
+		SnacViscoPlastic_Node*	srcNodeExt = ExtensionManager_Get( context->mesh->nodeExtensionMgr, 
+															   srcNode, 
+															   SnacViscoPlastic_NodeHandle );
+
+		dstNodeExt->plStrainSPR += srcNodeExt->plStrainSPR * weights[tetNode_i];
+/* 		dstNodeExt->viscositySPR += srcNodeExt->viscositySPR * weights[tetNode_i]; */
+
+/* 		fprintf(stderr,"%d:(%d %e %e)  ",tetNode_i, eltNodes[tetNodeInds[tetNode_i]], */
+/* 				srcNodeExt->plStrainSPR, weights[tetNode_i]); */
+	}
+	if( dstNodeExt->plStrainSPR < 0 ) dstNodeExt->plStrainSPR = 0.0;
+/* 	fprintf(stderr," %e\n", dstNodeExt->plStrainSPR); */
+
+}
+
+
+void _SnacViscoPlastic_InterpolateElement( void* _context, 
+									  Element_LocalIndex dstEltInd,
+									  Tetrahedra_Index dstTetInd )
+{
+	Snac_Context* 			context = (Snac_Context*)_context;
+	Snac_Element*			dstElt = Snac_Element_At( context, dstEltInd );
+	SnacViscoPlastic_Element*	dstEltExt = ExtensionManager_Get( context->mesh->elementExtensionMgr, 
+															  dstElt,
+															  SnacViscoPlastic_ElementHandle );
+	double				 	plasticStrain = 0.0;
+/* 	double				 	viscosity = 0.0; */
+	Index 					i;
+	
+/*  	fprintf(stderr,"element:%d tet=%d\n",dstEltInd,dstTetInd);  */
+	for(i=0;i<4;i++) {
+		Snac_Node*			node = Snac_Element_Node_P( context, dstEltInd, TetraToNode[dstTetInd][i] );
+		SnacViscoPlastic_Node*	nodeExt = ExtensionManager_Get( context->mesh->nodeExtensionMgr, 
+															node, 
+															SnacViscoPlastic_NodeHandle );
+		plasticStrain += 0.25f*nodeExt->plStrainSPR;
+/* 		viscosity += 0.25f*nodeExt->viscositySPR; */
+
+/* 		if( nodeExt->plStrainSPR != 0.0 ) */
+/* 		  fprintf(stderr,"\t%d:(%d %e)\n", i, TetraToNode[dstTetInd][i], nodeExt->plStrainSPR); */
+	}
+	dstEltExt->plasticStrain[dstTetInd] = plasticStrain;
+/* 	dstEltExt->viscosity[dstTetInd] = viscosity; */
+}

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Remesh.h
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Remesh.h	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/Remesh.h	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,50 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003, 
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+** 
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+*/
+/** \file
+** Role:
+**
+** Assumptions:
+**
+** Comments:
+**
+** $Id: Remesh.h 3250 2006-10-23 06:15:18Z LukeHodkinson $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#ifndef __SnacViscoPlastic_Remesh_h__
+#define __SnacViscoPlastic_Remesh_h__
+
+void _SnacViscoPlastic_RecoverNode( void* context, unsigned nodeInd );
+void _SnacViscoPlastic_InterpolateNode( void* context,
+									unsigned nodeInd, unsigned elementInd, unsigned tetInd, 
+									unsigned* tetNodeInds, double* weights, 
+									Snac_Node* dstNodes );
+void _SnacViscoPlastic_InterpolateElement( void* _context, unsigned dstElementInd, unsigned dstTetInd );
+	
+#endif /* __SnacViscoPlastic_Remesh_h__ */

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/ViscoPlastic.h
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/ViscoPlastic.h	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/ViscoPlastic.h	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,57 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003, 
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+** 
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+*/
+/** \file
+** Role:
+**
+** Assumptions:
+**	Only one can be registered at the time (limitation).
+**
+** Comments:
+**
+** $Id: ViscoPlastic.h 2202 2004-10-19 08:43:09Z SteveQuenette $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#ifndef __SnacViscoPlastic_h__
+#define __SnacViscoPlastic_h__
+	
+#include "types.h"
+#include "Node.h"
+#include "Element.h"
+#include "Mesh.h"
+#include "Context.h"
+#include "InitialConditions.h"
+#include "Constitutive.h"
+#include "Output.h"
+#include "ConstructExtensions.h"
+#include "ViscoPlastic.h"
+#include "Remesh.h"
+#include "Register.h"
+
+#endif /* __SnacViscoPlastic_h__ */

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/makefile
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/makefile	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/makefile	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,53 @@
+##~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+##
+## Copyright (C), 2003, 
+##	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+##	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+##	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+##
+## Authors:
+##	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+##	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+##	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+##	Luc Lavier, Research Scientist, Caltech.
+##
+## This program 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, or (at your option) any
+## later version.
+## 
+## This program 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 program; if not, write to the Free Software
+## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+##
+## $Id: Makefile.rules 1792 2004-07-30 05:42:39Z SteveQuenette $
+##
+##~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+# obtain defaults for required variables according to system and project location, and then run the build.
+ifndef PROJ_ROOT
+	PROJ_ROOT=../..
+endif
+include ${PROJ_ROOT}/Makefile.system
+
+include Makefile.def
+
+mod = ${def_mod}
+includes = ${def_inc}
+
+SRCS = ${def_srcs}
+
+HDRS = ${def_hdrs}
+
+PROJ_LIBS = ${def_libs}
+EXTERNAL_LIBS = -L${STGERMAIN_LIBDIR}  -lSnac -lStGermain
+EXTERNAL_INCLUDES = -I${STGERMAIN_INCDIR}/StGermain -I${STGERMAIN_INCDIR} 
+
+packages = MPI XML MATH
+
+include ${PROJ_ROOT}/Makefile.vmake

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/types.h
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/types.h	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/types.h	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,52 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003, 
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+** 
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+*/
+/** \file
+** Role:
+**	Plastic types.
+**
+** Assumptions:
+**	None as yet.
+**
+** Comments:
+**	None as yet.
+**
+** $Id: types.h 1958 2004-08-26 19:08:58Z puru $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#ifndef __SnacViscoPlastic_types_h__
+#define __SnacViscoPlastic_types_h__
+	
+	/* Plastic */
+	typedef struct _SnacViscoPlastic_Node		SnacViscoPlastic_Node;
+	typedef struct _SnacViscoPlastic_Element	SnacViscoPlastic_Element;
+	typedef struct _SnacViscoPlastic_Mesh		SnacViscoPlastic_Mesh;
+	typedef struct _SnacViscoPlastic_Context	SnacViscoPlastic_Context;
+	
+#endif /* __SnacViscoPlastic_types_h__ */

Added: long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/units.h
===================================================================
--- long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/units.h	                        (rev 0)
+++ long/3D/SNAC/trunk/Snac/plugins/viscoplasticSPR/units.h	2010-03-31 15:24:03 UTC (rev 16473)
@@ -0,0 +1,47 @@
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+**
+** Copyright (C), 2003, 
+**	Steve Quenette, 110 Victoria Street, Melbourne, Victoria, 3053, Australia.
+**	Californian Institute of Technology, 1200 East California Boulevard, Pasadena, California, 91125, USA.
+**	University of Texas, 1 University Station, Austin, Texas, 78712, USA.
+**
+** Authors:
+**	Stevan M. Quenette, Senior Software Engineer, VPAC. (steve at vpac.org)
+**	Stevan M. Quenette, Visitor in Geophysics, Caltech.
+**	Luc Lavier, Research Scientist, The University of Texas. (luc at utig.ug.utexas.edu)
+**	Luc Lavier, Research Scientist, Caltech.
+**
+** This program 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, or (at your option) any
+** later version.
+** 
+** This program 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 program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+**
+*/
+/** \file
+** Role:
+**
+** Assumptions:
+**	None as yet.
+**
+** Comments:
+**	None as yet.
+**
+** $Id: units.h 1968 2004-08-27 21:55:29Z puru $
+**
+**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+
+#ifndef __SnacViscoPlastic_units_h__
+#define __SnacViscoPlastic_units_h__
+	
+	typedef double				ViscoPlastic;
+	
+#endif /* __SnacViscoPlastic_units_h__ */



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