HelloMPI

Minimal Julia MPI application for testing purposes.

Usef for:

• Quickly check MPI when you move to a new system
• Check how mpi ranks are mapped to CPU cores
• Learn how to configure and use MPI on different systems
• Check the compilation and usage of a systemimage when using MPI

Usage

Taking das6 as example https://www.cs.vu.nl/das/

Move to the cpu folder and run the commands below.

Without system image (default).

$ das6/configure.sh
$ sbatch das6/job.sh

With CUDA in gpu folder

$ sbatch snellius-2023/configure.sh
$ sbatch snellius-2023/job.sh

With system image (advanced).

$ das6/configure.sh
$ sbatch das6/compile.sh
# Wait for the previous job to finish
$ sbatch das6/job-with-sysimage.sh