#!/bin/bash -l

#$ -l h_rt=12:00:00
#$ -N mpi_test
# When asking for only 1 MPI node this job can run on ANY 
# available compute node with at least 16 cores, not just
# the dedicated MPI nodes.
#$ -pe mpi_16_tasks_per_node 16

module load openmpi/3.1.4

# $NSLOTS is always set to the number of cores assigned to the
# job, in this case 16.  As all assigned cores will be used,
# the only mpirun argument that is needed is the number of processes,
# -np
mpirun -np $NSLOTS ./hello