[CIG-SHORT] PyLith v1.7.1 release

[f_orellana at berkeley.edu]

  To the CIG short term dynamics community,

   Hello, I am Felipe Orellana, here at UC Berkeley.

   I have installed the new version (1.7.1) of Pylith, on a Windows 7
plattform using the binary file from your web site.

   Unfortunately, when I try to run some examples of the tutorial I get
error messages like this:

 ImportError: numpy.core.multiarray failed to import Traceback
     File "/usr/bin/pylith" line...

   ....
  then Error references to

     File "/usr/lib/python2.6/site-packages/pylith/...


   from just reading, it seems a problem linking files and folders when
the program runs.


   mmm, i'll try to get an alternative solution for my problem, cause the
workshop is comming...

   i appreciate your attention,

warm regards,
from the bay area

Felipe


> Greetings,
>
> I am pleased to announce the release of PyLith 1.7.1, a finite-element
> code designed to solve dynamic elastic problems and quasi-static
> viscoelastic problems in tectonic deformation.
>
> This release fixes a couple of bugs in PyLith v1.7.0. The PyLith v1.7
> release series adds several new features to PyLith, including (1)
> user-friendly interface for computing Green's functions, (2) output of
> solution field at user-specified locations, (3) plane strain version
> of the Drucker-Prager elastoplastic rheology, (4) prescribed spatial
> and temporal variation of fault tractions with spontaneous earthquake
> ruptures, (5) ability to use PETSc GPU solvers, (6) user-specified
> start time for simulations, and (7) elastic prestep in quasi-static
> simulations is optional.
>
> We strongly recommend all users of previous PyLith releases switch to
> this latest release. In addition to adding features this release also
> fixes a minor parallel processing bug related to fault friction in
> quasi-static simulations.
>
> See the README file for changes required to switch to the v1.7.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 v1.7.1
>
> * Bug fixes
>
>    - Fixed a couple of bugs in the spontaneous earthquake rupture for
>      quasi-static problems when running in parallel. These prevented
>      the nonlinear solve from converging and erroneously generated
>      fault-opening in a some cases.
>
>    - Minor updates to the documentation and manual. Added Green's
>      function examples to the manual.
>
> RELEASE NOTES - PyLith v1.7.0
>
> * New features
>
>    * User-friendly interface for Green's functions
>
>      A new problem type provides a user-friendly interface for
>      computing Green's functions associated with fault slip for complex
>      spatial variation in elastic properties. See examples/2d/greensfns
>      in the tutorials for examples.
>
>    * Output of solution field at user-specified locations
>
>      Added a new output manager for interpolation of the solution field
>      to user-specified point locations. This feature is useful for
>      comparison of the solution with observations and in computing
>      Green's functions. See examples/3d/hex8/step19 and
>      examples/2d/greensfns in the tutorials for examples.
>
>    * Plane strain version of Drucker-Prager elastoplastic model
>
>      Added a plane strain version of the Drucker-Prager elastoplastic
>      model. Additionally, the user can now select whether to use an
>      inscribed, intermediate, or circumscribed fit to the Mohr Coulomb
>      criterion.
>
>    * Spatial and temporal variation in tractions for spontaneous
>      earthquake rupture
>
>      Switched from a simple constant spatial variation in initial fault
>      tractions to the more flexible spatial and temporal variation
>      consistent with the Dirichlet, Neumann, and point force boundary
>      conditions. Also added a switch to turn on/off applying prescribed
>      fault tractions when the fault opens; the default behavior is to
>      stop applying prescribed fault tractions when the fault opens, but
>      turning this off allows simulation of dike intrusions via
>      prescribed fault tractions. See examples/3d/hex8/step20 in the
>      tutorials for an example of how to specify fault tractions with
>      the new implementation.
>
>    * Ability to use PETSc GPU solvers
>
>      Added ability to build PyLith with either double (default) or
>      single precision floating point values to facilitate use of
>      GPUs. In order to use PETSc GPU solvers, CUDA and cusp must be
>      installed and PETSc must be configured to use CUDA. See the PyLith
>      manual and PETSc documentation for details.
>
>    * User-specified start time for simulations.
>
>      Users can set the simulation start time to any desired value. This
>      facilitates combining simulations to model the earthquake cycle.
>
>    * Elastic prestep in quasi-static simulations is optional.
>
>      The elastic prestep in quasi-static simulations can be skipped
>      (the default is to include the elastic prestep). This facilitates
>      combining simulations to model the earthquake cycle.
>
>