io500-singularity

Run io500 using Singularity on a Slurm cluster.

Build

A Docker container is automatically built on push by the Github CI workflow and uploaded to the GitHub Packages Repository.

Cluster prerequisites

• A Slurm cluster with the following installed on the login and compute nodes.
• singularity or apptainer
• openmpi or a compatible MPI.

Note all of the above are available from default or EPEL repos on RockyLinuyx 8.7.

Run

A very short debug run using 2x processes (probably on a single node) can be performed by running:

$ sbatch submit.sh config-debug-run.ini

For an io500-compliant run note that the stonewall parameter in the .ini file must be changed to 300 and 10x physical nodes must be used (e.g. use sbatch -N 10 --ntasks-per-node=1)

Note this assumes an OpenHPC cluster with the gnu12 and openmpi4 module installed.