I don’t think there’s a way to do that in Slurm using just the node
declaration, other than the previously mentioned way of configuring it to show
up as having only 1 core. However, you could put the node in a partition that
has OverSubscribe=EXCLUSIVE set, and have that partition be the only way to get
to it:
# in slurm.conf
NodeName=singlejobnode […settings…]
PartitionName=onejobatatime Nodes=singlejobnode OverSubscribe=EXCLUSIVE
# singlenodejob isn’t in any other partitions.
--Troy
From: slurm-users <slurm-users-boun...@lists.schedmd.com> on behalf of Rutger
Vos <rutger....@naturalis.nl>
Reply-To: Slurm User Community List <slurm-users@lists.schedmd.com>
Date: Wednesday, April 29, 2020 at 2:55 PM
To: "slurm-users@lists.schedmd.com" <slurm-users@lists.schedmd.com>
Subject: [slurm-users] one job at a time - how to set?
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
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