SERVICE RISK: The Bessemer HPC cluster will be at risk from 9am on July 15th until 5pm on July 19th 2024

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The ShARC HPC cluster was decommissioned on the 30th of November 2023 at 17:00. It is no longer possible for users to access that cluster.

Code Saturne

Code_Saturne solves the Navier-Stokes equations for 2D, 2D-axisymmetric and 3D flows, steady or unsteady, laminar or turbulent, incompressible or weakly dilatable, isothermal or not, with scalars transport if required.


Code Saturne 4.0.7 or 5.0.4 can be activated using the module files:

module load apps/code_saturne/4.0.7/gcc-4.9.4-openmpi-1.10.4
module load apps/code_saturne/4.0.7/gcc-6.2-openmpi-2.0.1
module load apps/code_saturne/5.0.4/intel-17.0.0-openmpi-2.0.1

Batch jobs

Users are encouraged to write their own batch submission scripts. The following is an example batch submission script,, to run Code Saturne 4.0.7 and which is submitted to the queue by typing qsub

#$ -cwd
#$ -l h_rt=00:30:00
#$ -l rmem=2G
#$ -pe mpi 4

# Load environment if this script is run directly.
module load apps/code_saturne/4.0.7/gcc-4.9.4-openmpi-1.10.4

# Run solver.
mpiexec -n 4 cs_solver --param case1.xml --mpi $@
export CS_RET=$?

exit $CS_RET

The script requests 4 cores using the MPI parallel environment mpi with a runtime of 30 mins and 2G of real memory per core. The Code Saturne input file is case1.xml. Note: The above batch script was adapted from the run_solver script generated during the batch usage test (see Installation notes below).

Installation notes

Code Saturne 4.0.7 was installed with GCC 4.9.4 and Open MPI 1.10.4 using the script; the module file is /usr/local/modulefiles/apps/code_saturne/4.0.7/gcc-4.9.4-openmpi-1.10.4.

Code Saturne 4.0.7 was installed with GCC 6.2.0 and Open MPI 2.0.1 using the script; the module file is /usr/local/modulefiles/apps/code_saturne/4.0.7/gcc-6.2-openmpi-2.0.1.

Code Saturne 5.0.4 was installed with Intel 17.0.0 and Open MPI 2.0.1 using the script; the module file is /usr/local/modulefiles/apps/code_saturne/5.0.4/intel-17.0.0-openmpi-2.0.1.

The above installations used the libraries Scotch/PT-Scotch 6.0.4 and Libxml2 2.9.1. No additional, optional libraries were used during compilation.

Post-installation: Please read the instructions at the end of the install script for the Code Saturne files to manually edit.

The installation of Code Saturne 4.0.7 was tested using the following example calculations.

Interactive usage test:

$ module load apps/code_saturne/4.0.7/gcc-4.9.4-openmpi-1.10.4
$ code_saturne create -s T_junction -c case1
$ cp $build_dir/examples/1-simple_junction/case1/case1.xml ./T_junction/case1/DATA
$ cp $build_dir/examples/1-simple_junction/mesh/downcomer.des ./T_junction/MESH
$ cd ./T_junction/case1/DATA
$ code_saturne run --param case1.xml
$ cd ../RESU/yyyymmdd-hhmm

The output ./T_junction/case1/RESU/yyyymmdd-hhmm/listing file should contain “END OF CALCULATION”.

Batch usage test using the parallel environment mpi 4 (performed after the interactive test above):

$ cd ./T_junction/case1/DATA
$ code_saturne run --initialize --param case1.xml --nprocs 4
$ cd ../RESU/yyyymmdd-hhmm
$ vi run_solver
$ qsub run_solver

The output ./T_junction/case1/RESU/yyyymmdd-hhmm/listing file should contain “END OF CALCULATION”.

User subroutines test (performed after the above two tests):

$ cd ./T_junction/case1/SRC
$ cp ./REFERENCE/cs_user_parameters.f90 .
$ code_saturne compile