# need this only if TESTDIR is not default
chmod -R 777 $TESTDIR
- mpi_run -np $((NUM_CLIENTS * THREADS_PER_CLIENT)) -machinefile ${MACHINEFILE} \
- $IOR -a POSIX -b 1g -o $TESTDIR/IOR-file -s 1 -t 1m -v -w -r 1>$LOG &
+ mpi_run -np $((NUM_CLIENTS * THREADS_PER_CLIENT)) \
+ ${MACHINEFILE_OPTION} ${MACHINEFILE} $IOR -a POSIX -b 1g \
+ -o $TESTDIR/IOR-file -s 1 -t 1m -v -w -r 1>$LOG &
load_pid=$!
wait $load_pid
if [ ${PIPESTATUS[0]} -eq 0 ]; then