Hi, we also have a wrapper script, together with a number of "MPI-Backends". If mpiexec is called on the login nodes, only the first process is started on the login node, the rest runs on the MPI backends.
Best Marcus Am 25.04.2021 um 09:46 schrieb Patrick Begou:
Hi, I also saw a cluster setup where mpirun or mpiexec commands were replaced by a shell script just saying "please use srun or sbatch...". Patrick Le 24/04/2021 à 10:03, Ole Holm Nielsen a écrit :On 24-04-2021 04:37, Cristóbal Navarro wrote:Hi Community, I have a set of users still not so familiar with slurm, and yesterday they bypassed srun/sbatch and just ran their CPU program directly on the head/login node thinking it would still run on the compute node. I am aware that I will need to teach them some basic usage, but in the meanwhile, how have you solved this type of user-behavior problem? Is there a preffered way to restrict the master/login resources, or actions, to the regular users ?We restrict user limits in /etc/security/limits.conf so users can't run very long or very big tasks on the login nodes: # Normal user limits * hard cpu 20 * hard rss 50000000 * hard data 50000000 * soft stack 40000000 * hard stack 50000000 * hard nproc 250 /Ole
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