rather than forcing tcp communication for OpenMPI, we disable infiniband instead for better stability of tests

2020-06-12 12:05:33 -04:00
parent 00ebbb311a
commit e006286603
10 changed files with 20 additions and 20 deletions
--- a/tools/singularity/centos8.def
+++ b/tools/singularity/centos8.def
@ -84,8 +84,8 @@ EOF
        # load MPI by default
        . /etc/profile
        module load mpi
-        # restrict OpenMPI to shared memory comm by default
-        OMPI_MCA_btl="tcp,self"
+        # tell OpenMPI to not try using Infiniband
+        OMPI_MCA_btl="^openib"
        # do not warn about unused components as this messes up testing
        OMPI_MCA_btl_base_warn_component_unused="0"
        export OMPI_MCA_btl OMPI_MCA_btl_base_warn_component_unused