Could you give me an idea of what your partition and qos settings are? I've tried the following and I'm getting odd results:
slurm.conf PreemptType: preempt/qos PreemptMode: 'SUSPEND,GANG' PreemptExemptTime: '00:00:00' Partitions: PartitionName=DEFAULT OverSubscribe=FORCE:1 Nodes=slurm[2-4] PartitionName=active Default=YES QOS=normal PartitionName=hipri Default=NO QOS=expedite QOS: sacctmgr -i modify qos where name=normal set PreemptExemptTime=00:03:00 PreemptMode=SUSPEND sacctmgr -i modify qos where name=expedite set PreemptExemptTime=-1 PreemptMode=OFF I took these settings directly from the google group I linked before, and I'm seeing what he's seeing...that no preemption happens. What I see is that, even if a job from "active" is already running, slurm will let me submit jobs from hipri to take up resources as though the active job wasn't there. In other words, there's some time sharing going on, even though the jobs are different partitions. The online docs indicate that jobs from different partitions should NOT be time sharing. I also do not see the "active" job getting preempted once it has run through its preempexempttime. It never gets preempted. Thanks. Rob ________________________________ From: slurm-users <slurm-users-boun...@lists.schedmd.com> on behalf of Christopher Samuel <ch...@csamuel.org> Sent: Tuesday, March 7, 2023 3:40 PM To: slurm-users@lists.schedmd.com <slurm-users@lists.schedmd.com> Subject: Re: [slurm-users] PreemptExemptTime On 3/7/23 6:46 am, Groner, Rob wrote: > Over global settings are PreemptMode=SUSPEND,GANG and > PreemptType=preempt/partition_prio. We have a high priority partition > that nothing should ever preempt, and an open partition that is always > preemptable. In between is a burst partition. It can be preempted if > the high priority partition needs the resources. That's the partition > we'd like to guarantee a 1 hour run time on. Looking at the sacctmgr > man page, it gives this info on QOS Just a quick comment, here you're talking about both partitions and QOS's with respect to preemption, I think for this you need to pick just one of those options and only use those configs. For instance we just use QOS's for preemption and our exempt time works in that case. Hope this helps! All the best, Chris -- Chris Samuel : https://nam10.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.csamuel.org%2F&data=05%7C01%7Crug262%40psu.edu%7C0ed8f546e70843e7266208db1f4c5471%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C638138184919726959%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=md1MaA%2FIj%2Fb%2B27e7JLkVwSY5IUSVnsJIdx6PADl0JF4%3D&reserved=0 : Berkeley, CA, USA
