[CIG-SHORT] Parallel computing problem

[Matthew Knepley]

On Tue, May 22, 2012 at 11:44 PM, Charles Williams <willic3 at gmail.com>wrote:

> What version of PyLith are you running?  I'm running the prerelease
> version of 1.7 and I also get a problem when I try running on more than 1
> node in examples/3d/hex8; however, the problem seems to go away when I try
> a different linear solution option.  Try using the attached .cfg file and
> see if things improve.  For your particular problem, I get a different
> issue when running in parallel (HDF5 error).  I'm not sure what the problem
> might be, but we'll have a look.
>

Can someone post the error?

  Thanks,

     Matt


> Cheers,
> Charles
>
> [see attached file: pc_fieldsplit_mult_separate.cfg]
>
> On 23/05/2012, at 1:36 PM, Romain Jolivet wrote:
>
> Hi,
>
> I have a problem running pylith on multiple nodes.
>
> My model is based on an elastic medium with a fault in it. When I use the
> FaultCohesiveKin property and impose the displacement, everything is fine.
> However, when I use the FaultCohesiveDyn property, with StaticFriction, it
> starts getting messy. My files are attached.
> I run:
> pylith step01.cfg
> and the run is fine
> If I run
> pylith --nodes=10 step01.cfg
> it crashes at the first time step. I tried with nodes=2 to nodes=12 (the
> number of cores on my machine) and I had the same result. The error message
> comes from petsc.
>
> I went into the pylith examples to find a similar, but simpler, problem.
> In example/3d/hex8/, I tried to run step10.cfg:
> with one node, it is fine:
> pyltih step10.cfg
> However, when you ask for several nodes (more than 2), it crashes:
> pylith --nodes=3 step10.cfg
> with 2 nodes, it seems to be fine, but you have a petsc error message at
> the end.
>
> I someone has an idea on this....
> Thank you
> Romain
>
> <TestRomain.tgz>
>
>
>
> Romain Jolivet
> Postdoctoral Scholar
> Geological and Planetary Sciences
> California Institute of Technology, Pasadena, CA
> rjolivet at caltech.edu
> +1 (626) 560 6356
>
> _______________________________________________
> CIG-SHORT mailing list
> CIG-SHORT at geodynamics.org
> http://geodynamics.org/cgi-bin/mailman/listinfo/cig-short
>
>
> 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
>
>
> _______________________________________________
> CIG-SHORT mailing list
> CIG-SHORT at geodynamics.org
> http://geodynamics.org/cgi-bin/mailman/listinfo/cig-short
>
>


-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://geodynamics.org/pipermail/cig-short/attachments/20120522/11b5fb39/attachment.htm