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I got it. It worked using now mpiexec.hydram in my case intel/2020.1:

$ mpiexec.hydra -n 2 python test.py
np: 2
np: 2
Process 1 Terminating
Process 0 Terminating

I got it, but I don't use it on the AWS cluster, I am trying to use it on local HPC. I'll try install OpenSeesMP as well.

Anyway, thanks for the suggestion.

Thank you for the suggestion. I really appreciate it.

But it is the point.

How to set up my server to work like this AWS to do getNP() function to work? Do I also need to install OpenSeesMP?

I'm running this openseespy code below with openmpi 4.1.4 version in Linux. I always retrieve 1 para ops.getNP() function. Any suggestions? # ------------------ python test.py file import openseespy.opensees as ops np = ops.getNP() print('np: ', np) if np < 2: exit() # ------------------ command lin...