There are three pieces of information that may provide Useful: 1 - these are VMs and not physical servers 2 - the OS is RedHat 7.8 2 - As far as I can tell, hyperthreading is not enabled, but will check for sure 3 - when we ask for 15Gb memory - we will only get 1 CPU
-----Original Message----- From: slurm-users [mailto:slurm-users-boun...@lists.schedmd.com] On Behalf Of Michael Di Domenico Sent: Tuesday, September 29, 2020 10:20 AM To: Slurm User Community List <slurm-users@lists.schedmd.com> Subject: EXTERNAL: Re: [slurm-users] Memory per CPU ** This email has been received from outside the organization – Think before clicking on links, opening attachments, or responding. ** what leads you to believe that you're getting 2 CPU's instead of 1? 'scontrol show job <id>' would be a helpful first start. On Tue, Sep 29, 2020 at 9:56 AM Luecht, Jeff A <jeff.lue...@pnc.com> wrote: > > I am working on my first ever SLURM cluster build for use as a resource > manager in a JupyterHub Development environment. I have configured the > cluster for SelectType of ‘select/con_res’ with DefMemPerCPU and MaxMemPerCPU > of 16Gb. The idea is to essentially provide for jobs that run in a 1 > CPU/16Gb chunks. This is a starting point for us. > > > > What I am seeing is that when users submit jobs and ask for memory only – in > this case, 16Gb, SLURM actually allocates 2 CPUs, not 1 that I would expect. > Is my understanding of how this particular configuration works incorrect? > > > The contents of this email are the property of PNC. If it was not addressed > to you, you have no legal right to read it. If you think you received it in > error, please notify the sender. Do not forward or copy without permission of > the sender. This message may be considered a commercial electronic message > under Canadian law or this message may contain an advertisement of a product > or service and thus may constitute a commercial electronic mail message under > US law. You may unsubscribe at any time from receiving commercial electronic > messages from PNC at http://pages.e.pnc.com/globalunsub/ > PNC, 249 Fifth Avenue, Pittsburgh, PA 15222; pnc.com > The contents of this email are the property of PNC. If it was not addressed to you, you have no legal right to read it. If you think you received it in error, please notify the sender. Do not forward or copy without permission of the sender. This message may be considered a commercial electronic message under Canadian law or this message may contain an advertisement of a product or service and thus may constitute a commercial electronic mail message under US law. You may unsubscribe at any time from receiving commercial electronic messages from PNC at http://pages.e.pnc.com/globalunsub/ PNC, 249 Fifth Avenue, Pittsburgh, PA 15222; pnc.com
