COMSOL

COMSOL#

COMSOL is a finite element analysis software for a broad range of physical applications. For further information, see the official documentation.

Available versions on Aire#

Version

Load Command

6.1

module load comsol/6.1

6.2

module load comsol/6.2

Setting up the licence#

Users need to provide their own licence via the LM_LICENSE_FILE environment variable. This can be achieved by running:

export LM_LICENSE_FILE=port@host:$LM_LICENSE_FILE

Here, port and host can be obtained from the licence holder.

How to submit a job#

The below example demonstrates running a 16-core job using a fictitious licence server. COMSOL on Aire supports batch mode, using pre-built .mph files.

Running COMSOL in command line can often create a large number of temporary files in your home directory. To resolve this we recommend creating a comsolrecovery directory in your scratch, then adding the following line to your comsol batch command in your submission script: -recoverydir /scratch/$USER/comsolrecovery.

#!/bin/bash
#SBATCH --job-name=comsol_example_job
#SBATCH --time=05:00:00
#SBATCH --mem=32G
#SBATCH --nodes=1
#SBATCH --ntasks=1          
#SBATCH --cpus-per-task=16  # Number of CPU cores required

module load comsol/6.2

export LM_LICENSE_FILE=port@host:$LM_LICENSE_FILE

# Run the job
comsol batch -np $SLURM_CPUS_PER_TASK \
             -tmpdir $TMPDIR \
             -inputfile input.mph \
             -outputfile output.mph \
             -recoverydir /scratch/$USER/comsolrecovery

Performance tuning COMSOL#

General advice can be found at the COMSOL website.

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