Modules on LUMI

Presenter: Kurt Lust (LUST)

LUMI uses Lmod, but as Lmod can be configured in different ways, even an experienced Lmod user can learn from this presentation how we use modules on LUMI and how modules can be found.

Materials

• A video recording will follow.

• Slides

• Course notes

• Exercises

Q&A

1. How can I check which projects involved after login Lumi?

   • It's in the message-of-the-day: lumi-workspaces. Or just the groups command

2. My main cpu programs use the following modules on HPC with the following compile modules:

   ml purge ml load ESMF/8.3.0-iomkl-2022a ml load UDUNITS/2.2.28-GCCcore-11.3.0 ml load GSL/2.7-intel-compilers-2022.1.0 ml load NCO/5.1.9-iomkl-2022a ml load Python/3.10.4-GCCcore-11.3.0 ml load FFTW/3.3.10-GCC-11.3.0

   Do you have suggested compiler chain for the Lumi modules?

   • These are regular EasyBuild toolchains, in this case with the Intel compiler and MKL. We don't really support that compiler on LUMI. But I think we have all of those libraries compile with GCC. Anyway, if you want to interface with Python through .so libraries, it is always best to use the GNU compilers.

   • Please check https://lumi-supercomputer.github.io/LUMI-EasyBuild-docs/ for packages available or installable with easybuild on LUMI.