COMSOL Multiphysics

Comsol in Triton is best run in Batch-mode. To check which versions of Comsol are available, run:

module spider comsol

• To run Comsol in a single node use -clustersimple and -launcher slurm:

  #!/bin/bash
  
  # Ask for e.g. 20 compute cores
  #SBATCH --time=10:00:00
  #SBATCH --mem-per-cpu=2G
  #SBATCH --cpus-per-task=20
  
  cd $WRKDIR/my_comsol_directory
  module load Java
  module load comsol
  
  # Details of your input and output files
  INPUTFILE=input_model.mph
  OUTPUTFILE=output_model.mph
  
  comsol batch -clustersimple -launcher slurm -inputfile $INPUTFILE -outputfile $OUTPUTFILE -tmpdir $TMPDIR
  

• Comsol can run even bigger jobs over multiple computing nodes with -clustersimple. For this, please refer to Comsol online manual or ask for further help.

• Comsol uses a lot of temp file storage, which by default goes to $HOME. Fix a bit like the following:

  $ rm -rf ~/.comsol/
  $ mkdir /scratch/work/$USER/comsol_revoveries/
  $ ln -sT /scratch/work/$USER/comsol_revoveries/ ~/.comsol