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Allow MPI oversubscription for OpenMPI5 #37

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ocaisa merged 1 commit into from
May 8, 2026
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Merged

Allow MPI oversubscription for OpenMPI5 #37

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4 changes: 3 additions & 1 deletion action.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -57,8 +57,10 @@ runs:
echo "source /cvmfs/software.eessi.io/versions/$EESSI_STACK_VERSION/init/bash" >> $HOME/env_config.export
fi
fi
# allow oversubscription for OpenMPI
# allow oversubscription for OpenMPI for OpenMPI4
echo "export OMPI_MCA_rmaps_base_oversubscribe=1" >> $HOME/env_config.export
# allow oversubscription for OpenMPI for OpenMPI5
echo "export PRTE_MCA_rmaps_default_mapping_policy=:oversubscribe" >> $HOME/env_config.export
if [[ "${{ inputs.init_direnv }}" == "true" ]]; then
sudo apt install -y direnv
echo 'eval "$(direnv export bash)"' >> $HOME/env_config.export
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