Tutorial:Slurm and parallelization
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2.9 years ago
Juke34 8.6k

Using parallelization in a proper way is not always straightforward. Here some help to better understand how it works with Slurm:

(Full part of this documentation is available here)

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If the cluster has two type of nodes, e.g. 16 and 36 CPUs nodes. When asking for 36 CPU for a single job you must use the following syntax otherwise the job may be sent to a 16 CPU node:

srun -J jobName [-N 1] -n 1 -c 36 <command>

-N is optional because -c 36 means you need 36 cores in one node, since threads cannot span across nodes. But it doesn't hurt to be explicit and specify all three parameters.

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