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Subject: [OMPI users] Status of SLURM integration
From: Andrew Senin (andrew.senin_at_[hidden])
Date: 2012-01-11 02:38:34


Could you please describe the current status of SLURM integration? I
had a feeling srun supports direct launch of OpenMpi applications
(without mpirun) compiled with the 1.5 branch.  At least one of my
colleagu succeeded on that.

But when I installed SLURM and the head revision of OpenMPI 1.5 branch
I did not manage to run it without settings the SLURM_STEP_RESV_PORTS
environment variable. I receive the following:

  orte_grpcomm_modex failed
  --> Returned "A message is attempting to be sent to a process whose
contact information is unknown" (-117) instead of "Success" (0)
[mir9:25477] *** An error occurred in MPI_Init
[mir9:25477] *** on a NULL communicator
[mir9:25477] *** Unknown error
[mir9:25477] *** MPI_ERRORS_ARE_FATAL: your MPI job will now abort

So I have 2 questions:
1. Is support of SLURM in the head revision of 1.5 branch stable
enough to use it in the lab?
2. Does direct launch of mpi applications require setting the
SLURM_STEP_RESV_PORTS environment variable?

Andrew Senin.