[CIG-SHORT] PyLith v1.7.1 release

Charles Williams willic3 at gmail.com
Wed Jun 13 15:10:37 PDT 2012 

Dear Felipe,

Did you try the solution Brad proposed the other day?  For your reference, I'm posting it again below.  Let us know if this works for you.

Cheers,
Charles

PyLith Windows users,

We appear to have a solution for those of you getting the error message 
"ImportError: numpy.core.multiarray failed to import."
when trying to use the PyLith Windows binary. It looks like this error 
arises from having another version of Python installed that interferes 
with the Python included with PyLith. The solution is to set your 
environment variables so that the shell doesn't see the existing Python 
when you run PyLith.

1. Double click on the PyLith icon to get the cygwin terminal window for 
Pylith.
2. Run "env >& env.log" and examine the env.log file for environment 
variables related to Python.

3. Remove all environment variables related to Python and set the PATH 
variable to the absolute minimum. For example:

unset PYTHON
unset PYTHON26
unset PYTHON27
unset PYTHONPATH
PATH=/usr/bin:/bin:/lib:/lib/lapack

4. You should now be able to use PyLith.

In general, you will need to perform steps 1 and 3 (but not 2) every 
time you run PyLith. To add these commands to the PyLith startup script, 
add the commands to the bottom of the .pylithrc file included in the 
PyLith distribution. Usually this file is in Program Files (x86)/PyLith. 
This shell script is run every time PyLith starts up.

Regards,
Brad
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On 14/06/2012, at 7:50 AM, f_orellana at berkeley.edu wrote:

> 
>  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.
>> 
>> 
> 
> 
> _______________________________________________
> CIG-SHORT mailing list
> CIG-SHORT at geodynamics.org
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Charles A. Williams
Scientist
GNS Science
1 Fairway Drive, Avalon
PO Box 30368
Lower Hutt  5040
New Zealand
ph (office): 0064-4570-4566
fax (office): 0064-4570-4600
C.Williams at gns.cri.nz

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