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"
#usage to print the way this script should be called
function usage () {
echo "usage:"
- echo "$0 [-quiet] [-keep-temps]"
+ echo "$0 [-keep-temps]"
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"
echo " [-trace-triva] # generate configuration for Triva's GraphView"
echo " [-trace-file <tracefile>] # name of the tracefile (simgrid_smpi.trace)"
echo "or (deprecated usage):"
- echo "$0 [-quiet] [-keep-temps] [-np <numprocs>] [-bandwidth <bytes/sec>] [-latency <secs>] program [program-options]"
+ echo "$0 [-keep-temps] [-np <numprocs>] [-bandwidth <bytes/sec>] [-latency <secs>] program [program-options]"
echo
}
;;
"-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
##-----------------------------------
# Basic checks on the provided arguments
-if [ -z ${EXEC} ] ; then
+if [ -z "${EXEC}" ] ; then
echo "You must provide a program to execute."
usage
exit 1
fi
-if [ -z ${HOSTFILE} ] ; then
+if [ -z "${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 ${hostfile_procs} processes in your hostfile..." >&2
+fi
##-------------------------------- DEFAULT or SPECIFIED PLATFORM --------------------------------------
if [ -z "${PLATFORM}" ]; then