#!/bin/csh
#PBS -l ncpus=4
#ncpus must be a multiple of 4
#PBS -l walltime=5:00                 
#PBS -j oe
#PBS -q batch

set echo

ja

#move to my $SCRATCH directory
cd $SCRATCH

#copy executable to $SCRATCH
cp $HOME/mympi .

#run my executable
mpirun -np 4 ./hello_world

ja -chlst