Batch Scripts for the OpenFOAM tutorials

To run the tutorials, copy them from the package account into a new directory named run within your user directory, <username>-1.6, using the following the 3 commands:

 cd $WM_PROJECT_USER_DIR
 mkdir -p $FOAM_RUN
 cp -r $FOAM_TUTORIALS $FOAM_RUN

where the third line may a few minutes to execute.

This following batch script runs tests the installation of the tutorials using HECToR's `serial' queue.

#!/bin/bash --login
#PBS -q serial
#PBS -N testInstall
#PBS -l walltime=01:00:00
#PBS -A z01  
. /opt/modules/3.1.6/init/bash
module swap PrgEnv-pgi PrgEnv-gnu
module swap gcc gcc/4.3.3
module swap xt-mpt xt-mpt/3.2.0
source /work/z01/z01/gavin/OpenFOAM/OpenFOAM-1.6/etc/bashrc 
export LD_LIBRARY_PATH=$WM_PROJECT_DIR/mylib:$LD_LIBRARY_PATH
cd $FOAM_RUN/tutorials
Allclean
Alltest

NB All serial queues employ dual-core nodes thus, if users employ the quad-core version, then the results may not be correct.

This following batch runs the final part of the Dam Break tutorial, a parallel run of interFOAM on 8 cores, for user gavin. (The preparatory stages, namely running blockMesh, setFields and decomposePar, must be run before interFoam.).

#!/bin/bash --login
#PBS -l mppwidth=8
#PBS -l mppnppn=4
#PBS -N dam_tutorial
#PBS -l walltime=01:00:00
#PBS -A z01
export NSLOTS=`qstat -f $PBS_JOBID | awk '/mppwidth/ {print $3}'`
export NTASK=`qstat -f $PBS_JOBID | awk '/mppnppn/ {print $3}'`
. /opt/modules/3.1.6/init/bash
module swap PrgEnv-pgi PrgEnv-gnu
module swap gcc gcc/4.3.3
module swap xt-mpt xt-mpt/3.2.0
source /work/z01/z01/gavin/OpenFOAM/OpenFOAM-1.6/etc/bashrc 
export LD_LIBRARY_PATH=$WM_PROJECT_DIR/mylib:$LD_LIBRARY_PATH
cd $FOAM_RUN/tutorials/multiphase/interFoam/laminar/damBreak
export MPICH_PTL_EAGER_LONG=1
aprun -n $NSLOTS -N $NTASK interFoam -parallel

NB All parallel jobs are run on quad-core nodes, hence we set #PBS -l mppnppn=4. Users can run either the dual- or quad-core versions of OpenFOAM in parallel, but the dual-core version may not perform as well.

Setting the environment variable MPICH_PTL_EAGER_LONG=1 was found to speed up execution by around 7% for large numbers of cores, and had no adverse affect on performance for small number of cores.