LOOPBACK_LATENCY="${DEFAULT_LOOPBACK_LATENCY}"
NETWORK_BANDWIDTH="${DEFAULT_NETWORK_BANDWIDTH}"
NETWORK_LATENCY="${DEFAULT_NETWORK_LATENCY}"
LOOPBACK_LATENCY="${DEFAULT_LOOPBACK_LATENCY}"
NETWORK_BANDWIDTH="${DEFAULT_NETWORK_BANDWIDTH}"
NETWORK_LATENCY="${DEFAULT_NETWORK_LATENCY}"
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>] -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 " [-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 " [-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):"
-# 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 "${HOSTFILE}" ] ; then
+ echo "No hostfile specified."
+if [ -z "${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
##-------------------------------- DEFAULT or SPECIFIED PLATFORM --------------------------------------
if [ -z "${PLATFORM}" ]; then