LOOPBACK_LATENCY="${DEFAULT_LOOPBACK_LATENCY}"
NETWORK_BANDWIDTH="${DEFAULT_NETWORK_BANDWIDTH}"
NETWORK_LATENCY="${DEFAULT_NETWORK_LATENCY}"
-NUMPROCS="${DEFAULT_NUMPROCS}"
POWER="${DEFAULT_POWER}"
SIMOPTS="--cfg=maxmin/precision:1e-9 --cfg=network/model:SMPI --cfg=network/TCP_gamma:4194304"
echo " [-np <numprocs>] -platform <xmldesc> -hostfile <hostfile> [-map] program [program-options]"
echo " [-keep-temps] # don't remove the generated files after execution"
echo " [-map] # display the machine on which each process rank is mapped"
+ echo " [-np <numprocs>] # use that amount of processes from the hostfile."
+ echo " # By default, all processes of the hostfile are used."
echo " [-trace] # activate tracing"
echo " [-trace-grouped] # group MPI processes by location"
echo " [-trace-resource] # trace resource utilization"
;;
"-platform")
PLATFORM="$2"
- if [ ! -f ${PLATFORM} ]; then
+ if [ ! -f "${PLATFORM}" ]; then
echo "[$0] ** error: the file '${PLATFORM}' does not exist. Aborting."
exit 1
fi
;;
"-hostfile")
HOSTFILE="$2"
- if [ ! -f ${HOSTFILE} ]; then
+ if [ ! -f "${HOSTFILE}" ]; then
echo "[$0] ** error: the file '${HOSTFILE}' does not exist. Aborting."
exit 1
fi
##-----------------------------------
-# test if we have something to execute, otherwise show usage and exit
-if [ -z ${EXEC} ]
-then
- echo "Program is missing"
+# Basic checks on the provided arguments
+if [ -z "${EXEC}" ] ; then
+ echo "You must provide a program to execute."
+ usage
+ exit 1
+fi
+
+if [ -z "${HOSTFILE}" ] ; then
+ echo "No hostfile specified."
usage
exit 1
fi
+# Don't use wc -l to compute it to avoid issues with trailing \n at EOF
+hostfile_procs=`grep -c [a-zA-Z0-9] $HOSTFILE`
+if [ -z "${NUMPROCS}" ] ; then
+ # Use the amount of processes in the hostfile as default value for the -np parameter
+ NUMPROCS=$hostfile_procs
+fi
+
+
+if [ ${NUMPROCS} -gt ${hostfile_procs} ] ; then
+ echo "You requested to use ${NUMPROCS} processes, but there is only ${hostfile_procs} processes in your hostfile..."
+ exit 1
+fi
##-------------------------------- DEFAULT or SPECIFIED PLATFORM --------------------------------------
if [ -z "${PLATFORM}" ]; then