[slurm-users] How do I impose a limit the memory requested by a job?

[Paul Edmon]

Slurm should automatically block or reject jobs that can't run on that 
partition in terms of memory usage for a single node.  So you shouldn't 
need to do anything.  If you need something less than the max memory per 
node then you will need to enforce some limits.  We do this via a 
jobsubmit lua script.  That would be my recommended method.


-Paul Edmon-


On 3/12/19 12:31 PM, David Baker wrote:
>
> Hello,
>
>
> I have set up a serial queue to run small jobs in the cluster. 
> Actually, I route jobs to this queue using the job_submit.lua script. 
> Any 1 node job using up to 20 cpus is routed to this queue, unless a 
> user submits their job with an exclusive flag.
>
>
> The partition is shared and so I defined memory to be a resource. I've 
> set default memory/cpu to be 4300 Mbytes. There are 40 cpus installed 
> in the nodes and the usable memory is circa 17200 Mbytes -- hence my 
> default mem/cpu.
>
>
> The compute nodes are defined with RealMemory=190000, by the way.
>
>
> I am curious to understand how I can impose a memory limit on the jobs 
> that are submitted to this partition. It doesn't make any sense to 
> request more than the total usable memory on the nodes. So could 
> anyone please advise me how to ensure that users cannot request more 
> than the usable memory on the nodes.
>
>
> Best regards,
>
> David
>
>
> PartitionName=serial nodes=red[460-464] Shared=Yes MaxCPUsPerNode=40 
> DefaultTime=02:00:00 MaxTime=60:00:00 QOS=serial 
> SelectTypeParameters=CR_Core_Memory *DefMemPerCPU=4300* State=UP 
> AllowGroups=jfAccessToIridis5 PriorityJobFactor=10 PreemptMode=off
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.schedmd.com/pipermail/slurm-users/attachments/20190312/604cb853/attachment.html>