ODU Research Computing Forum

Running OpenFOAM on the cluster

Engineering
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#1

I want to use the OpenFOAM fluid dynamics simulation software on HPC. Is this software available on Wahab cluster? How to use or run it on our HPC?

#2

The OpenFOAM software is available on ODU HPC clusters using the openfoam module.

To get started with OpenFOAM, follow these steps:

  1. If you need to use paraFoam, connect to the cluster via remote desktop connection:

This step is optional but required if you want to use paraFoam. Otherwise, you can use SSH.

  1. Allocate a compute node:

salloc -c 16

  1. Load the OpenFOAM module:

module load openfoam.com/2112

  1. Prepend “crun” to your OpenFOAM commands, like this:

crun paraFoam

If you want to run OpenFOAM with MPI, use the following job script:

#!/bin/bash

#SBATCH -n 20

module load openfoam.com/2112

srun crun foamXXXX

Replace foamXXXX with the command you need to run. Save the script in the same directory as your input file, for example “job_script.sh”.

To submit the script, use “sbatch job_script.sh”. If you’re new to Slurm, here are some common commands and a resource link to get you started:

• Submit a job:

sbatch job_script.sh (this will give you a job ID, and your output will be in slurm-jobid.out)

• Check job status:

squeue -u $USER

• Delete a job:

scancel job_id