Bill Allombert on Sun, 04 Dec 2022 21:44:35 +0100

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Re: help with MPI and SLURM

On Sun, Dec 04, 2022 at 09:12:34PM +0100, Markus Grassl wrote:
> Hello,
> I hope that someone here on the list can help me with the MPI version of
> PARI/gp in a SLURM environment.

I have acces to a SLURM environment with MPI.  Let's just say I get it to work
when I need to use it, but it is always finicky, it depends on the way the
network is set up, different partitions might need different settings.

> The application appears to have been direct launched using "srun",
> but OMPI was not built with SLURM's PMI support and therefore cannot
> execute. There are several options for building PMI support under
> SLURM, depending upon the SLURM version you are using:

Looking at the error message, this is a problem with your OpenMPI setup, not with PARI.

Maybe your cluster has another version of mpi or openmpi that you can use.