On Slurm on Atos AD complex was updated to version 22.05. Since AD has been the default cluster with hpc-loginand hpc-batchbeing aliases for nodes on AD complex.
The same version of Slurm 22.05 was has also been installed on AA and AB complexes and will be installed on AC complex on .
One change in the new Slurm version impacts all batch jobs setting the number of OMP threads with directive:
Code Block
language
bash
theme
Confluence
#SBATCH --cpus-per-task
According to Following recommendation from the official release note:
Panel
borderColor
black
borderStyle
solid
title
Slurm 22.05:
Srun will no longer read in SLURM_CPUS_PER_TASK. This means you will implicitly have to specify --cpus-per-task on your srun calls, or set the new SRUN_CPUS_PER_TASK env var to accomplish the same thing.
The we strongly suggest to all Atos HPC users should adjust the jobs script by exporting SRUN_CPUS_PER_TASK environmental variable manually: