[Trilinos-Users] Exodus and MPI

[Andrea Penza]

Thanks Kevin, Shota and Brent for yours explanations.
Tomorrow I will work again on this and I certainly will let you know if I have success.
Thanks again, best regards.

Andrea


Il giorno 13/dic/2011, alle ore 23.36, Kevin Long ha scritto:

> 
> Hi Andrea,
> 
> There are several options as mentioned by Brent and Shota
> 
> (1) Use the scripts provided with Sundance
> (2) Use the nem_split/nem_spread utilities bundled with SEACAS
> 
> Kevin
> 
> On 12/13/2011 04:20 PM, Andrea Penza wrote:
>> 
>> Hi Shota,
>> 
>> thanks for your answer.
>> So, do you think that without a Cubit License it could be impossible to use parallel computing with an ExodusII mesh?
>> I've tried also with Triangle mesh file, and the problem was the same: the system was looking for two splitted mesh file .par . If I've understood right the python script you named should create this *.par file...right?
>> Thanks a lot, kind regards.
>> 
>> Andrea
>> 
>> 
>> Il giorno 13/dic/2011, alle ore 23.01, Shota Soga ha scritto:
>> 
>>> HI Andrea,
>>> 
>>> When you run Sundance with multi-dore, it asks to distributed mesh by default for parallel computing.
>>> 
>>> I do not know how to generate distributed mesh with exodus (probably Cubit can do this?), but in the source directory, I thought there is python script to convert Exodus file to partitioned triangle mesh. Then, use Triangle Mesh reader for partitioned triangle mesh.
>>> 
>>> Shota
>>> 
>>> On Tue, Dec 13, 2011 at 4:43 PM, Andrea Penza <pepe.aero at alice.it> wrote:
>>> Hi all,
>>> 
>>> I have problems executing Sundance with ExodusII mesh. I'm trying to run
>>> it with MPI on the two processors of my DualCore. I've tested MPI and
>>> Exodus separately and everything was working.
>>> Now the problem is that my system look for two splitted files for the
>>> mesh, particularly it search *.pxo file format.
>>> The system reports this message at runtime:
>>> 
>>> andrea at andrea-MacBookPro:~/Projects/trilinos-10.8.3-Source/MyApps/LaplaceScalar$ time mpirun -np 2 ./LaplaceScalarExo.exe
>>> Teuchos::GlobalMPISession::GlobalMPISession(): started processor with
>>> name andrea-MacBookPro and rank 0!
>>> Teuchos::GlobalMPISession::GlobalMPISession(): started processor with
>>> name andrea-MacBookPro and rank 1!
>>> Simulation built using Sundance version 2.3.0 (10 May 2008)
>>> Sundance is copyright
>>>  (C) 2005-2008 Sandia National Laboratories
>>>  (C) 2007-2008 Texas Tech University
>>> and is licensed under the GNU Lesser General Public License, version 2.1
>>> [1]
>>> Sundance detected exception:
>>> /home/andrea/Projects/trilinos-10.8.3-Source/packages/Sundance/src-utils/Utilities/SundancePathUtils.cpp:58:
>>> 
>>> Throw number = 1
>>> 
>>> Throw test that evaluated to true: true
>>> 
>>> could not find file ../Mesh/exodusii/square-2-0.pxo in path
>>> {., /home/andrea/Projects/trilinos-10.8.3-Source/BUILD/packages/Sundance/etc, /usr/local/etc, NOTFOUND/Sundance/meshes, /home/andrea/Projects/trilinos-10.8.3-Source/BUILD/packages/Sundance/examples-tutorial/data, /usr/local/examples-tutorial/data}
>>> caught
>>> in /home/andrea/Projects/trilinos-10.8.3-Source/packages/Sundance/src-std-mesh/Sources/SundanceExodusMeshReader.cpp:474
>>> 
>>> caught
>>> in /home/andrea/Projects/trilinos-10.8.3-Source/packages/Sundance/src-std-mesh/Sources/SundanceMeshSource.cpp:69
>>> 
>>> test FAILED
>>> Sundance detected exception:
>>> /home/andrea/Projects/trilinos-10.8.3-Source/packages/Sundance/src-utils/Utilities/SundancePathUtils.cpp:58:
>>> 
>>> Throw number = 1
>>> 
>>> Throw test that evaluated to true: true
>>> 
>>> could not find file ../Mesh/exodusii/square-2-1.pxo in path
>>> {., /home/andrea/Projects/trilinos-10.8.3-Source/BUILD/packages/Sundance/etc, /usr/local/etc, NOTFOUND/Sundance/meshes, /home/andrea/Projects/trilinos-10.8.3-Source/BUILD/packages/Sundance/examples-tutorial/data, /usr/local/examples-tutorial/data}
>>> caught
>>> in /home/andrea/Projects/trilinos-10.8.3-Source/packages/Sundance/src-std-mesh/Sources/SundanceExodusMeshReader.cpp:474
>>> 
>>> caught
>>> in /home/andrea/Projects/trilinos-10.8.3-Source/packages/Sundance/src-std-mesh/Sources/SundanceMeshSource.cpp:69
>>> 
>>> test FAILED
>>> 
>>> 
>>> As you can see, my system look for a
>>> file ../Mesh/exodusii/square-2-0.pxo for the process with rank 0, and
>>> the file ../Mesh/exodusii/square-2-1.pxo for the rank 1.
>>> The source mesh file name is square.exo in the dir Mesh/exodusii.
>>> Thanks a lot to everyone could help me!
>>> Kind regards,
>>> 
>>> Andrea
>>> 
>>> 
>>> _______________________________________________
>>> Trilinos-Users mailing list
>>> Trilinos-Users at software.sandia.gov
>>> http://software.sandia.gov/mailman/listinfo/trilinos-users
>>> 
>>> 
>>> 
>>> 
>>> -- 
>>> Shota Soga
>>> Graduate Assistant at North Carolina State University
>>> 
>>> Email: ssoga at ncsu.edu
>>> URL:http://abdelk.ne.ncsu.edu/w/
>>> 
>>> 
>> 
> 
> 
> -- 
> Kevin Long
> Associate Professor
> Department of Mathematics and Statistics
> Texas Tech University
> 
> "The end of fear is the beginning of wisdom" 
> - Bertrand Russell
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