George,
Wouldn't a QOS with GrpNodes=10 accomplish that?
Ryan
On 10/30/2014 11:47 AM, Brown George Andrew wrote:
Hi,
I would like to have a partition of N nodes without statically
defining which nodes should belong to a partition and I'm trying to
work out the best way to achieve this.
Currently I have partitions which span across all the nodes in my
cluster with differing settings, but I would like some of these to
only occupy a subset of the cluster. I could say define partition A
which can use all nodes but partition B may only access nodes 01-10.
But I would like avoid partition B being reduced in size in the event
of maintenance or hardware failure.
I'm thinking the way to do this would be via a plugin. I would keep
all partitions spanning all nodes in the cluster but upon submission
check how many nodes are in use on the requested partition. If there
were say already 10 nodes in use in partition B the job should be
queued. However things then get a bit more complex as to when slurm
should de-queue and then run the job.
Is there a native method to do this in slurm? Essentially I would like
something like the MaxNodes option that exists for partitions today
but have it limit the total number of nodes used by jobs submitted to
that partition rather than just a limit per job.
Many thanks,
George
