Simplify SLURM_MPI_TYPE logic for Open MPI

ComputeCanada / software-stack-config

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Simplify SLURM_MPI_TYPE logic for Open MPI #87

Closed bartoldeman closed 2 months ago

bartoldeman commented 2 months ago

default to pmi2, except for 5.0 which doesn't support it
for Open MPI < 2.1 never use pmix
for Open MPI 2.1 only use pmix_v1 if available
for Open MPI 3.1+ always use pmix if available without specific version

mboisson commented 2 months ago

How was this tested ?

bartoldeman commented 2 months ago

via a custom openmpi module in $HOME. So I know it works on build-node but haven't tested on clusters yet (which would be easier with this file in dev cvmfs)