[CIG-SHORT] Pylith-running mpi on cluster

[Charles Williams]

Dear Niloufar,

It is hard to diagnose your problem without more information.  Information that would be helpful includes:

1.  What size of problem are you running?
2.  What solver settings are you using?
3.  Is this a linear or nonlinear problem?
4.  Is this a 2D or 3D problem?
5.  What does the run log show?  This will include convergence information and a PETSc summary of calls, etc.

There are probably other things it would be good to know, but this should get us started.


Cheers,
Charles


> On 7/02/2018, at 1:06 PM, Niloufar Abolfathian <niloufar.abolfathian at gmail.com> wrote:
> 
> Hi, 
> 
> I am trying to run my code on the cluster but I have not gotten any improvements when using multiple cores.
> 
> What I have tried:
> 
> Downloaded binaries for both Mac and Linux.  Single core vs multiple cores (2 and 24 for Mac and Linux respectively) takes the same amount of time.
> 
> Compiled from source, no speed up either using shared memory or mpi, even though the correct number of mpinemesis processes show up on multiple nodes.
> 
> I appreciate if you can help me with running the mpi on the cluster.
> 
> Thanks,
> Niloufar
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Charles Williams I Geodynamic Modeler
GNS Science I Te Pῡ Ao
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