[cig-commits] r21033 - in short/3D/PyLith/branches/v1.8-stable: . doc/releasenotes

Wed Nov 14 00:50:23 PST 2012

Author: brad
Date: 2012-11-14 00:50:22 -0800 (Wed, 14 Nov 2012)
New Revision: 21033

Added:
   short/3D/PyLith/branches/v1.8-stable/doc/releasenotes/announce_v1.8.1.txt
Modified:
   short/3D/PyLith/branches/v1.8-stable/README
Log:
Worked on release notes for v1.8.1.

Modified: short/3D/PyLith/branches/v1.8-stable/README
===================================================================

--- short/3D/PyLith/branches/v1.8-stable/README	2012-11-14 04:44:53 UTC (rev 21032)
+++ short/3D/PyLith/branches/v1.8-stable/README	2012-11-14 08:50:22 UTC (rev 21033)
@@ -62,6 +62,29 @@
   formulation = pylith.problems.ExplicitTet4
 
 ----------------------------------------------------------------------
+Version 1.8.1
+----------------------------------------------------------------------
+
+* Bug fixes
+
+  - Fixed two MPI related bugs in computing Green's functions in
+    parallel. The number of impulses corresponded to only those on
+    process 0.
+
+  - Fixed bug when reading in list of output points with just one
+    point.
+
+  - Adjusted autoconf Python setup macro to remove temporary
+    sysconfig.pyc file.
+
+  - Added check to make sure degree of freedom specified in Dirichlet
+    BC is consistent with spatial dimension of problem.
+
+  - Corrected two typos in the manual related to fault opening and
+    tractions in examples/3d/hex8/step20 and updating to the use of
+    cell.dimension for the quadrature scheme with tets.
+
+----------------------------------------------------------------------
 Version 1.8.0
 ----------------------------------------------------------------------
 

Added: short/3D/PyLith/branches/v1.8-stable/doc/releasenotes/announce_v1.8.1.txt
===================================================================
--- short/3D/PyLith/branches/v1.8-stable/doc/releasenotes/announce_v1.8.1.txt	                        (rev 0)
+++ short/3D/PyLith/branches/v1.8-stable/doc/releasenotes/announce_v1.8.1.txt	2012-11-14 08:50:22 UTC (rev 21033)
@@ -0,0 +1,123 @@
+Greetings,
+
+I am pleased to announce the release of PyLith 1.8.1, a finite-element
+code designed to solve dynamic elastic problems and quasi-static
+viscoelastic problems in tectonic deformation.
+
+This release fixes a few bugs in PyLith v1.8.0. We strongly recommend
+all users of previous PyLith releases switch to this latest
+release.
+
+See the README file for changes required to switch to the v1.8.x
+release series from previous versions.
+
+You can download the source code and binaries from
+
+    http://geodynamics.org/cig/software/packages/short/pylith
+
+Detailed installation instructions for the binary packages are in the
+User Manual with detailed building instructions for a few platforms in
+the INSTALL file bundled with the PyLith Installer utility.
+
+
+RELEASE NOTES - PyLith v1.8.1
+
+* Bug fixes
+
+  - Fixed two MPI related bugs in computing Green's functions in
+    parallel. The number of impulses corresponded to only those on
+    processor 0.
+
+  - Fixed bug when reading in list of output points with just one
+    point.
+
+  - Adjusted autoconf Python setup macro to remove temporary
+    sysconfig.pyc file.
+
+  - Added check to make sure degree of freedom specified in Dirichlet
+    BC is consistent with spatial dimension of problem.
+
+  - Corrected two typos in the manual related to fault opening and
+    tractions in examples/3d/hex8/step20 and updating to the use of
+    cell.dimension for the quadrature scheme with tets.
+
+RELEASE NOTES - PyLith v1.8.0
+
+* New features
+
+  * Additional flexibility in PETSc nonlinear solver parameters
+
+    The default line search type for the PETSc nonlinear (SNES) solver
+    is a customized backtrace method included in PyLith. The user may
+    now select alternative line search types (basic, bt, l2, cp)
+    available in PETSc.
+
+  * Post-processing utility pylith_eqinfo to compute slip information.
+
+    This post-processing utility computes the moment magnitude,
+    seismic moment, seismic potency, and average slip at
+    user-specified snapshots in time from PyLith HDF5 output.
+    Information is given for each fault and across all faults. See
+    the Post-processing section of the manual in the Running PyLith
+    chapter for more information.
+
+  * Computation of the stable time step for explicit time-stepping.
+
+    The stable time step for explicit time-stepping is computed based
+    on the CFL condition and minimum edge lengths. For triangular and
+    tetrahedral cells we also account for a reduction in the stable
+    time step due to distorted cells (e.g., slivers and needles). See
+    the Stable time step section in the Materials chapter of the
+    manual for more information.
+
+  * Output the stable time step for each cell in a material.
+ 
+    Output cell_info_fields "stable_dt_implicit" and
+    "stable_dt_explicit" can be included in material output.
+
+  * Added netCDF Python module to binary distribution to provide
+    Python interface to NetCDF files, including Exodus-II files. This
+    is used in a new meshing example for setting the discretization
+    size using an Exodus-II vertex field. Note that this required
+    updating the NetCDF library.
+
+  * New CUBIT meshing examples demonstrating how to merge surfaces and
+    use and an Exodus-II vertex field to specify the discretization
+    size.
+    + examples/meshing/surface_nurbs/merge_surfs
+    + examples/meshing/cubit_cellsize
+
+* Bug fixes
+
+  - Fixed omission of synchronization of stable time step computation
+    among processors. Minimum time step among all processors rather
+    than local value should be used.
+
+  - Fixed density scale not being set in NondimElasticQuasistatic.
+    Density scale should be set based on shear modulus, length scale,
+    and relaxation time.
+
+  - Added warning when initial state for a fault constitutive model is
+    not set. If an initial state value is not given, for rate-state
+    friction using a default value of L / reference slip rate. Other
+    fault constitutive models use a default value of 0.0 for initial
+    state variables.
+
+  - Separated tensor components in Xdmf files to avoid confusion. The
+    corresponding HDF5 files remain unchanged.
+
+  - Removed explicit time-stepping formulation with non-lumped
+    Jacobian. This formulation was not setup properly for spontaneous
+    rupture models and is too computationally expensive for practical
+    problems. The ExplicitLumped* formulations are now simply Explicit*.
+
+  - Fixed parallel bug that resulting in inconsistent orientation of
+    fault slip directions. Flipping the fault orientation was not
+    synchronized across processors. This bug would only appear when
+    running in parallel with faults that change from dipping in one
+    direction to dipping in the opposite direction.
+
+  - Fixed bug in setting name of field in OutputSolnPoints when output
+    multiple fields. This bug caused the name of the first output
+    field to be used and output data to overwrite each other.
+

