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:
Packages | Rocky Linux 9 |
|---|---|
| kernel | 5.14.0-503.40.1 |
| cgroups | v2 |
| ofed | 25.04-0.6.1 |
| slurm | 25.05.0 |
| pmix | 4.2.9 |
| bash | 5.1.8-9 |
| gcc | 11.5.0-5 |
| glibc | 2.34-168 |
| python | 3.9.21-2 |
| perl | 5.32.1-481 |
For a complete overview of most changes, please check the or the (upstream) .
Slurm updated to version 25.05
All our clusters were updated to Slurm 25.05.
For more information about this version, please check the (highlights) or the (for a more extensive list of changes) or the .
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:
Module | 2023a | 2024a | 2025a |
|---|---|---|---|
| GCC OpenMPI PMIx | 12.3.0 4.1.5 4.2.4 | 13.3.0 5.0.3 5.0.2 | 14.2.0 5.0.7 5.0.6 |
| intel-compilers / imkl iimpi | 2023.1.0 2021.9.0 | 2024.2.0 2021.13.0 | 2025.1.1 2021.15.0 |
| Python Perl | 3.11.3 5.36.1 | 3.12.3 5.38.2 | 3.13.1 5.40.0 |
| Cuda | 12.1.1 | 12.6.0 | 12.8.0 |
Note: older toolchains will not be available anymore!