COMSOL
The COMSOL general-purpose engineering application is installed in both the Niagara and CC software stacks.
Getting a license
Licenses are provided by COMSOL. As commercial software you will require a license to use this package.
Running using the Niagara installation
Ansys 19.0
Commercial modules can only be accessed using the 'module use' command.
module use /scinet/niagara/software/commercial/modules module load ansys/19.0
Programs available:
- fluent
- ansysedt
- mapdl
- ...
Setting up your .mw directory
Ansys will attempt to write to your $HOME/.mw directory. This will work when you are testing your workflow on the login nodes, because they can write to $HOME. However, recall that the compute nodes cannot write to the /home filesystem. If you attempt to run Ansys from a compute node using the default configuration, it will fail because Ansys cannot write to $HOME/.mw.
The solution is to create an alternative directory called $SCRATCH/.mw, and create a soft link from $HOME/.mw to $SCRATCH/.mw:
mkdir $SCRATCH/.mw ln -s $SCRATCH/.mw $HOME/.mw
This will fool Ansys into thinking it is writing to $HOME/.mw, when in fact it is writing to $SCRATCH/.mw. This command only needs to be run once.
Running ansys190
Example submission script for a job running on 2 nodes, with max walltime of 11 hours:
#!/bin/bash
#SBATCH --nodes=2
#SBATCH --ntasks-per-node=40
#SBATCH --time=11:00:00
#SBATCH --job-name test
module use /scinet/niagara/software/commercial/modules
module load ansys/19.0
# DIRECTORY TO RUN - $SLURM_SUBMIT_DIR is directory job was submitted from
cd $SLURM_SUBMIT_DIR
machines=`srun bash -c 'hostname -s' | sort | uniq | awk '{print $1 ":" 40}' | paste -s -d ':'`
ansys190 -b -j JOBNAME -ppf aa_r -dis -machines $machines -i ansys.in
Running using the CC installation
Ansys 19.0
To access the CC software stack you must unload the Niagara stack.
module load CCEnv module load ansys/19.0
You can run the script given in the previous section by substituting the previous module commands with the above two.