Hi all, I'm quite noob in slurm and I'm still learning how slurm works. There are some concepts that get me confused. For example, the difference between ntasks and cpus-per-task in sbatch and/or srun. I've noticed that cpus-per-task (and ntasks=1) allocates cpus (cores) within the same compute node. A value of cpus-per-task higher than the max number of cores of any node, will fail, since it seems that tries to allocate cores within the same node. With ntasks is different. If I set a ntasks value higher than the number of cores of a node, slurm allocates cores within several nodes, in a linear mode. So, should I understand cpus-per-task as the number of cpus/cores/thread I want to use? What's the real meaning of ntasks? Has cpus-per-task and ntasks the same meaning in sbatch and srun?
Best regards.
