[slurm-users] How to turn off core specialization?

[Guertin, David S.]

Thanks! That worked.

David Guertin
Information Technology Services
Middlebury College
700 Exchange St.
Middlebury, VT 05753
(802)443-3143

________________________________________
From: slurm-users <slurm-users-bounces at lists.schedmd.com> on behalf of Taras Shapovalov <taras.shapovalov at brightcomputing.com>
Sent: Wednesday, August 28, 2019 11:20 AM
To: Slurm User Community List
Subject: Re: [slurm-users] How to turn off core specialization?

Hi Dave,

I can confirm that CoreSpecCount can not be reset to 0 once it is set >0 (at least for FastSchedule>0). As a workaround for this bug you can try to stop slurmctld, remove node_state file and start slurmctld again.

Best regards,

Taras

On Fri, Aug 9, 2019 at 11:54 PM Guertin, David S. <guertin at middlebury.edu<mailto:guertin at middlebury.edu>> wrote:
What's even stranger is that I can change CoreSpecCount to any other number (2, 3, whatever), restart the daemons, and the change is made. But if I try to set it to 0, nothing happens. It's like there's a setting somewhere that is forcing CoreSpecCount to be >0. But I have no idea what that could be.

Dave

David Guertin
Information Technology Services
Middlebury College
700 Exchange St.
Middlebury, VT 05753
(802)443-3143
________________________________
From: slurm-users <slurm-users-bounces at lists.schedmd.com<mailto:slurm-users-bounces at lists.schedmd.com>> on behalf of Guertin, David S. <guertin at middlebury.edu<mailto:guertin at middlebury.edu>>
Sent: Friday, August 9, 2019 4:28 PM
To: Slurm User Community List <slurm-users at lists.schedmd.com<mailto:slurm-users at lists.schedmd.com>>
Subject: Re: [slurm-users] How to turn off core specialization?

> Have you restarted all your slurm daemons?

Yes, I have done that on every node, but it still shows one specialized core.

> Not sure whether "scontrol reconfigure" can deal with that change.

I tried "scontrol reconfigure", but it also had no effect.

Thanks,
Dave