Upgrade to Rocky Linux 9

During the summer holidays of 2025, we upgraded our CalcUA clusters to Rocky Linux 9 (version 9.6).
Note: the free test period (under reservation rocky9) ended September 1, 2025.

The upgrade includes the following changes (see below):

• new versions of kernel packages, drivers, and system installed user packages
• Slurm updated to version 25.05
• only toolchain versions 2023a and above will be available

Users will need to:

• start using modules from 2023a or above
• recompiling your code and/or recreating your (virtual) environments
• check that their code still runs
• update job scripts (if needed)

For questions and problems, please contact us via e-mail: hpc@uantwerpen.be.

New versions of main packages

Here's a quick overview of the main packages involved:

For a complete overview of most changes, please check the Release notes for Rocky Linux 9.6 or the (upstream) Release notes for Red Hat Enterprise Linux 9.6.

Slurm updated to version 25.05

All our clusters were updated to Slurm 25.05.

For more information about this version, please check the Release Notes for Slurm 25.05 (highlights) or the CHANGELOG (for a more extensive list of changes) or the official Slurm Documentation.

Module toolchains starting from 2023a

Starting with Rocky Linux 9, we will be offering only toolchains version 2023a or above (as well as the usual system and x86_64 toolchains). 

Here's a short overview of some of the main modules and their versions:

Note: older toolchains will not be available anymore!