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mpirun -ppn option does not work.

ccopemem
Beginner
399 Views

Hello,

We use OneAPI on IBM Spectrum LSF environment.

 

Now we are facing that "mpirun -np 2 -ppn 1 ./mpi-program.out" does not work.

It always run all processes on same node.

LSF support said it is not related LSF.

 

What does it caused by ?

And how do we investigate this issue ?

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4 Replies
TobiasK
Moderator
323 Views

@ccopemem can you please provide the output of I_MPI_DEBUG=10 and I_MPI_HYDRA_DEBUG=1?

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ccopemem
Beginner
254 Views

Hi TobiasK,

Thank you for your reply and big hint.

 

I got this output with I_MPI_DEBUG=10 and I_MPI_HYDRA_DEBUG=1.

Both I_MPI_JOB_RESPECT_PROCESS_PLACEMENT and ppn = 1 specified, defaulting to scheduler-supplied value.

 

-ppn worked fine by specified I_MPI_JOB_RESPECT_PROCESS_PLACEMENT=disable.

We appreciate for your kind support.

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TobiasK
Moderator
178 Views

@ccopemem 
I don't see any logs, but I guess this is solved now?

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ccopemem
Beginner
131 Views

Hi TobiasK,

Thank you for your following.

 

I don't see any logs, but I guess this is solved now?

Yes, it is solved.

We appreciate your kindly support and big hint.

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