An example batch job is to be found in each source code directory, but for 
running in parallel you have to change ncpus and mpiprocs parameters properly.

A general parallel job script is reported down here. Please follow instructions 
given during the course lessons for all details.

#!/bin/sh
#PBS -N test
#PBS -r n
#PBS -j oe
#PBS -l walltime=1:00:00
#PBS -l select=1:ncpus=8:mpiprocs=8
#PBS -A <your_account>
#
cd $PBS_O_WORKDIR
module load autoload openmpi
echo "Job started at " `date`
#   commands to remove old files
#   commands to compile the program
#   commands to execute the program
wait
echo "Job finished at " `date`
exit

Would you please find further details at http://www.hpc.cineca.it/content/batch-scheduler-pbs