Explicitly enable lustre parallel i/o.

DavidHuber-NOAA · Feb 1, 2024 · aac7010 · aac7010
1 parent 2efa4ba
commit aac7010
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/ush/sub_hercules b/ush/sub_hercules
@@ -118,6 +118,9 @@ echo "" >>$cfile
 echo "export ntasks=$(( $nodes * $procs ))" >> $cfile
 echo "export ppn=$procs"                    >> $cfile
 echo "export threads=$threads"              >> $cfile
+# With newer IMPI versions, its sometimes necessary to tell MPI how to use parallel I/O
+echo "export I_MPI_EXTRA_FILESYSTEM=1"      >> $cfile
+echo "export I_MPI_EXTRA_FILESYSTEM_FORCE=lustre" >> $cfile
 echo "export OMP_NUM_THREADS=$threads"      >> $cfile
 ##echo "export OMP_STACKSIZE=2048M"           >> $cfile
 echo "ulimit -s unlimited"                  >> $cfile