PythonFOAM parallel run

Nasrin Fard · May 24, 2023, 10:15

Hi all,
I am using Python and numpy libraries inside OpenFOAM, and I use a Python module to calculate density instead of rho = thermo.rho() whatever we have that in reactingFoam solver. I had to define objects and arguments to make the module readable. for running an OpenFOAM code in parallel, I use the following command "mpirun -np 2 reactingFoam -parallel", but it doesn't work for the PythonFOAM case. and I see the following error,
"mpirun noticed that process rank 0 with PID 0 on node BOOK-SK5J7CQPFM exited on signal 11 (Segmentation fault)."
did you have any experience with parallel running?

pbevington · May 30, 2023, 17:17

Have you tried running in serial? Does it only fail when running in parallel?

What does your parallel setup look like? Do you have a decomposeParDict?

Nasrin Fard · May 30, 2023, 17:23

Thanks pbevington for your reply. I can run it in serial without any problem. For parallel running I do decomposePar first and after that mpirn...but it doesn't work. Maybe it is related to the ranks, but I don't kmow what should I do exactly.

May 24, 2023, 10:15	PythonFOAM parallel run	#1
Nasrin Fard New Member Nasrin Sahranavardfard Join Date: May 2023 Posts: 2 Rep Power: 0	Hi all, I am using Python and numpy libraries inside OpenFOAM, and I use a Python module to calculate density instead of rho = thermo.rho() whatever we have that in reactingFoam solver. I had to define objects and arguments to make the module readable. for running an OpenFOAM code in parallel, I use the following command "mpirun -np 2 reactingFoam -parallel", but it doesn't work for the PythonFOAM case. and I see the following error, "mpirun noticed that process rank 0 with PID 0 on node BOOK-SK5J7CQPFM exited on signal 11 (Segmentation fault)." did you have any experience with parallel running?

May 30, 2023, 17:17		#2
pbevington New Member Peter Bevington Join Date: May 2023 Posts: 10 Rep Power: 2	Have you tried running in serial? Does it only fail when running in parallel? What does your parallel setup look like? Do you have a decomposeParDict? Nasrin Fard likes this.

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May 30, 2023, 17:23		#3
Nasrin Fard New Member Nasrin Sahranavardfard Join Date: May 2023 Posts: 2 Rep Power: 0	Thanks pbevington for your reply. I can run it in serial without any problem. For parallel running I do decomposePar first and after that mpirn...but it doesn't work. Maybe it is related to the ranks, but I don't kmow what should I do exactly.