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Simulation failed; Parallel computing in OpenFOAM

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Old   March 3, 2024, 17:51
Unhappy Simulation failed; Parallel computing in OpenFOAM
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Hazem
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Hello everyone,

I have a problem in running a parallel simulation with OpenFOAM on HPC.

I have a case that I used to run it smoothly on 40 processors. The same case now keeps failing without changing any of the input files.

I doubted that the problem is the version of openMPI, so I re-compliled OpenFOAM with a newer version of OpenMPI, but this didn't solve the problem.

Besides, I tried to run the case on a fewer number of processors. It ran without any problems on 4, 8 and 12 processors, and it failed on 16 and higher. The node of our HPC has 20 processors, so it failed even if it should be on the same node.

I tried also to remove the current version of OpenFOAM, and I installed the latest version, but this also doesn't help.

Has anyone encountered a similar problem? And how should I fix this?

Attached, screenshots of the log files at the line at which the simulation continues or fails. (after "Create time")

Screenshot 2024-03-03 172335.png

Screenshot 2024-03-03 173215.png
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Old   June 3, 2024, 10:52
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Adriana Pinto
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Quote:
Originally Posted by hazem1 View Post
Hello everyone,

I have a problem in running a parallel simulation with OpenFOAM on HPC.

I have a case that I used to run it smoothly on 40 processors. The same case now keeps failing without changing any of the input files.

I doubted that the problem is the version of openMPI, so I re-compliled OpenFOAM with a newer version of OpenMPI, but this didn't solve the problem.

Besides, I tried to run the case on a fewer number of processors. It ran without any problems on 4, 8 and 12 processors, and it failed on 16 and higher. The node of our HPC has 20 processors, so it failed even if it should be on the same node.

I tried also to remove the current version of OpenFOAM, and I installed the latest version, but this also doesn't help.

Has anyone encountered a similar problem? And how should I fix this?

Attached, screenshots of the log files at the line at which the simulation continues or fails. (after "Create time")

Attachment 98749

Attachment 98750
Hello Hazem. Did you find a solution to this problem? I think I am having a similar problem.
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