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StarCCM+

Simcenter STAR-CCM+ is a commercial simulation software based on computational fluid dynamics developed by Siemens Digital Industries Software. Simcenter STAR-CCM+ allows modeling and analysis of a range of engineering problems involving fluid flow, heat transfer, stress, particle flow, electromagnetics, and related phenomena.

License required

Please purchase the StarCCM+ license, download, and install it yourself. If you need assistance with installation or usage, please contact us with proof that your research group owns a StarCCM+ license.

1. Script Template​

submit.sh
#!/bin/bash
#SBATCH --nodes=1                   # Number of nodes
#SBATCH --ntasks-per-node=56        # Number of cores per node
#SBATCH --ntasks=56                 # Total number of cores
#SBATCH --partition=g1_share        # Queue partition; must specify the correct partition
#SBATCH --job-name=hello            # Job name
#SBATCH --output=hello_%j.out       # Normal log output (%j parameter value is jobId)
#SBATCH --error=hello_%j.err        # Error log output (%j parameter value is jobId)
   
##############################################
#          Software Envrironment             #
##############################################
unset I_MPI_PMI_LIBRARY                        # Unset default MPI library, use Intel's built-in
export I_MPI_JOB_RESPECT_PROCESS_PLACEMENT=0   # Parameter modification required for Intel multi-node jobs
module load intel/2022 intelmpi/2022           # Load Intel environment
   
##############################################
#               Run job                      #
##############################################
ulimit -s unlimited
ulimit -l unlimited
   
cat /dev/null > machinefile
scontrol show hostname $SLURM_JOB_NODELIST > machinefile
jobname=`ls | grep sim | sed 's/.\{3\}.$//'`   # Automatically identify and submit the single .sim file in the directory; if multiple files exist, modify the jobname parameter below
   
starccm+ -power -mpi intel -machinefile './machinefile' -np $SLURM_NTASKS -rsh ssh -cpubind -batch run -batch-report $jobname

2. The meanings of the command-line parameters are as follows:​

  • -power: Run starccm+ in PowerSession mode.
  • -mpi intel: Use the Intel MPI library.
  • -machinefile './machinefile': Specify the path to the machine file containing the node list.
  • -np $SLURM_NTASKS: Specify the number of processes to use, where $SLURM_NTASKS is the number of processes available in the Slurm job.
  • -rsh ssh: Use the SSH protocol for remote shell access.
  • -cpubind: Bind processes to CPUs to improve performance.
  • -batch run: Run starccm+ in batch mode.
  • -batch-report $jobname: Specify the name of the batch report, where $jobname is the name of the Slurm job.

3. Running Issues​

# Output file hangs at this content during parallel execution, and nodes remain idle
Starting STAR-CCM+ parallel server 
# Solution: Remove the -mpi intel flag from the command line
# License file not found during runtime
License build date: 31 March 2022
This version of the code requires license version 2023.02 or greater.
Licensing problem: Unable to find a path to any license file or license server.  Please create the CDLMD_LICENSE_FILE environment variable and point it to the license server.
# Solution: export CDLMD_LICENSE_FILE=<path_to_license_file>