#!/usr/bin/ksh
# Wrapper script to set up environment so the arguments run a 1 task
# mpi run on the local node.  Essentially runs ip over ethernet with
# resd=no and a hostfile (containing the local machine name)
#
# Written by John C. Gyllenhaal at LLNL 6/25/02

# Print usage
if [ $# -lt 1 ]; then
   echo "Usage: nopoe executable [args]";
   echo " "
   echo "  Runs executable with args in an environment where any mpi programs"
   echo "  executed will be run on the local host with 1 task."
   exit 1;
fi


# Get current hostname
MY_HOSTNAME=`hostname`

# Create hostname file using this name and pid
HOSTLIST=hostlist.$MY_HOSTNAME.$$

# Put 1 line of this hostname into HOSTCONTENTS
HOSTCONTENTS="$MY_HOSTNAME"
rm -f $HOSTLIST
echo $HOSTCONTENTS > $HOSTLIST

# SET MP_ variables to run locally on this host
# IP mode needed if not using switch
export MP_EUILIB=ip

# Unset EUIDEVICE, defaults to ethernet which is correct and prevents warning
unset MP_EUIDEVICE
export MP_EUIDEVICE

# Override user's environment to make one task
unset MP_TASKS_PER_NODE
export MP_TASKS_PER_NODE
export MP_NODES=1
export MP_PROCS=1

# Don't talk to poe (cannot use switch in this case)
export MP_RESD=NO

# Don't reserve node (may not be necessary)
export MP_CPU_USE=multiple

# Run on this node (needed if not using poe)
export MP_HOSTFILE=$HOSTLIST

# Suppress message about RMPOOL being ignored
unset MP_RMPOOL
export MP_RMPOOL

# Required for slurm on AIX
unset MP_RMLIB
export MP_RMLIB

# Suppress AIX 5.3 message stating 
#  mp_euilib is not us, high priority daemon has been started
unset MP_PRIORITY
export MP_PRIORITY

# Turn of 0: prefix for output
export MP_LABELIO=NO

# Ignore batch script configuration (if any)
unset LOADLBATCH
export LOADLBATCH

# Run the command with its arguments and get its return value
"$@"
RETVAL=$?

# Remove hostlist
rm -f $HOSTLIST

exit $RETVAL;