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MAPDL: Intel vs IBM MPI

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CFX: Intel vs IBM MPI
This commit is contained in:
caubet_m
2021-02-15 12:24:10 +01:00
parent 9c5d9b50d8
commit 19c7f9bb79
2 changed files with 42 additions and 6 deletions
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23
pages/merlin6/05 Software Support/ansys-mapdl.md
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@ -128,11 +128,26 @@ export ANSYSLMD_LICENSE_FILE=1055@$LICENSE_SERVER
export ANSYSLI_SERVERS=2325@$LICENSE_SERVER
# [Optional:END]
# When using -mpi=intelmpi, KMP Affinity must be disabled
export KMP_AFFINITY=disabled
SOLVER_FILE=input.dat
SOLVER_FILE=/data/user/caubet_m/MAPDL/mysolver.in
mapdl -b -dis -np ${SLURM_NTASKS} -i "$SOLVER_FILE"
# INTELMPI=no for IBM MPI
# INTELMPI=yes for INTEL MPI
INTELMPI=no
if [ "$INTELMPI" == "yes" ]
then
# When using -mpi=intelmpi, KMP Affinity must be disabled
export KMP_AFFINITY=disabled
# INTELMPI is not aware about distribution of tasks.
# - We need to define tasks distribution.
HOSTLIST=$(srun hostname | sort | uniq -c | awk '{print $2 ":" $1}' | tr '\n' ':' | sed 's/:$/\n/g')
mapdl -b -dis -mpi intelmpi -machines $HOSTLIST -np ${SLURM_NTASKS} -i "$SOLVER_FILE"
else
# IBMMPI (default) will be aware of the distribution of tasks.
# - In principle, no need to force tasks distribution
mapdl -b -dis -mpi ibmmpi -np ${SLURM_NTASKS} -i "$SOLVER_FILE"
fi
```
In the above example, one can increase the number of *nodes* and/or *ntasks* if needed and combine it