[slurm-users] [EXT] rejecting jobs that exceed QOS limits

Sean Crosby scrosby at unimelb.edu.au
Sat May 29 04:08:38 UTC 2021

Hi Paul,


sacctmgr modify qos gputest set flags=DenyOnLimit

From: slurm-users <slurm-users-bounces at lists.schedmd.com> on behalf of Paul Raines <raines at nmr.mgh.harvard.edu>
Sent: Saturday, 29 May 2021 12:48
To: slurm-users at lists.schedmd.com <slurm-users at lists.schedmd.com>
Subject: [EXT] [slurm-users] rejecting jobs that exceed QOS limits

External email: Please exercise caution

I want to dedicate one of our GPU servers for testing where
users are only allowed to run 1 job at a time using 1 GPU and
8 cores of the server.  So I put one server in a partition on its
own and setup a QOS for it as follows:

  sacctmgr add qos gputest
  sacctmgr modify qos gputest set priority=20
  sacctmgr modify qos gputest set MaxJobsPerUser=1
  sacctmgr modify qos gputest set MaxTRESPerUser=cpu=8,gres/gpu=1
  sacctmgr show qos format=name,priority,MaxTRESPerUser,MaxJobsPerUser

In slurm.conf I have:


This works but when I submit a job asking for 2 more more GPUs, instead
of being immediate rejected it queues but never runs. Same if I
ask for more than 8 cores

Is there a way to get it immediately rejected?

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