[slurm-users] What is an easy way to prevent users run programs on the master/login node.

Cristóbal Navarro cristobal.navarro.g at gmail.com
Tue Apr 27 17:44:46 UTC 2021


Many thanks to all,
I will try to set cgroups properly
best

On Mon, Apr 26, 2021 at 2:04 AM Marcus Wagner <wagner at itc.rwth-aachen.de>
wrote:

> 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
> >>
> >
> >
>
> --
> Dipl.-Inf. Marcus Wagner
>
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-- 
Cristóbal A. Navarro
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