You can adjust or enforce almost anything about a job with a job_submit.lua [1 (search for “JobSubmitPlugins”), 2].
Assuming you want this node in a single partition, you can set ExclusiveUser in a partition definition in slurm.conf. That would at least keep other users off the node, but wouldn’t prevent a single user from running multiple jobs on the node. Past that, you can force a QOS on the partition [3], and use that to set limits on how many jobs a user can have running [4]. That might be just a MaxJobs=1 for the QOS. [1] https://slurm.schedmd.com/archive/slurm-15.08.13/slurm.conf.html [2] https://github.com/SchedMD/slurm/blob/slurm-15-08-13-1/contribs/lua/job_submit.lua [3] https://slurm.schedmd.com/archive/slurm-15.08.13/qos.html [4] https://slurm.schedmd.com/archive/slurm-15.08.13/resource_limits.html > On Apr 29, 2020, at 3:19 PM, Rutger Vos <rutger....@naturalis.nl> wrote: > > External Email Warning > This email originated from outside the university. Please use caution when > opening attachments, clicking links, or responding to requests. > Hi Michael, > > thanks very much for your swift reply. So here we would have to convince the > users they'd have to specify this when submitting, right? I.e. 'sbatch > --exclusive myjob.sh', if I understand correctly. Would there be a way to > simply enforce this, i.e. at the slurm.conf level or something? > > Thanks again! > > Rutger > > On Wed, Apr 29, 2020 at 10:06 PM Renfro, Michael <ren...@tntech.edu> wrote: > That’s a *really* old version, but > https://slurm.schedmd.com/archive/slurm-15.08.13/sbatch.html indicates > there’s an exclusive flag you can set. > >> On Apr 29, 2020, at 1:54 PM, Rutger Vos <rutger....@naturalis.nl> wrote: >> . >> Hi, >> >> for a smallish machine that has been having degraded performance we want to >> implement a policy where only one job (submitted with sbatch) is allowed to >> run and any others submitted after it are supposed to wait in line. >> >> I assumed this was straightforward but I can't seem to figure it out. Can I >> set that up in slurm.conf or in some other way? Thank you very much for your >> help. BTW we are running slurm 15.08.7 if that is at all relevant. >> >> Best wishes, >> >> Dr. Rutger A. Vos >> Researcher / Bioinformatician >> >> >> >> >> >> >> >> +31717519600 - +31627085806 >> rutger....@naturalis.nl - www.naturalis.nl >> Darwinweg 2, 2333 CR Leiden >> Postbus 9517, 2300 RA Leiden >> >> >> >> >> >> >> >> >> >> >> > > > -- > > Met vriendelijke groet, > > Dr. Rutger A. Vos > Researcher / Bioinformatician > > > > > > > > +31717519600 - +31627085806 > rutger....@naturalis.nl - www.naturalis.nl > Darwinweg 2, 2333 CR Leiden > Postbus 9517, 2300 RA Leiden > > > > > > > > > > >
