Re: [slurm-users] Slurm Upgrade

2020-11-04 Thread Ole Holm Nielsen
On 11/5/20 7:14 AM, navin srivastava wrote: Thank you all for the response. but my question here is I have already built a new server slurm 20.2 with the latest DB. my question is,  shall i do a mysqldump into this server from existing server running with version slurm version 17.11.8 and the

Re: [slurm-users] Slurm Upgrade

2020-11-04 Thread Christopher Samuel
Hi Navin, On 11/4/20 10:14 pm, navin srivastava wrote: I have already built a new server slurm 20.2 with the latest DB. my question is,  shall i do a mysqldump into this server from existing server running with version slurm version 17.11.8 This won't work - you must upgrade your 17.11 datab

Re: [slurm-users] Slurm Upgrade

2020-11-04 Thread navin srivastava
Thank you all for the response. but my question here is I have already built a new server slurm 20.2 with the latest DB. my question is, shall i do a mysqldump into this server from existing server running with version slurm version 17.11.8 and then i will upgrade all client with 20.x followed b

[slurm-users] update_node / reason set to: slurm.conf / state set to DRAINED

2020-11-04 Thread Kevin Buckley
We have had a couple of nodes enter a DRAINED state where scontrol gives the reason as Reason=slurm.conf In looking at the SlurmCtlD log we see pairs of lines as follows update_node: node nid00245 reason set to: slurm.conf update_node: node nid00245 state set to DRAINED A search of the int

Re: [slurm-users] Using hyperthreaded processors

2020-11-04 Thread Sebastian T Smith
Hi, We have Hyper-threading/SMT enabled on our cluster. It's challenging to fully utilize threads, as Brian suggests. We have a few workloads that benefit from it being enabled, but they represent a minority of our overall workload. We use SelectTypeParameters=CR_Core_Memory. This configurat

Re: [slurm-users] Using hyperthreaded processors

2020-11-04 Thread Brian Andrus
JC, One thing you will start finding in HPC is that, by it's goal, hyperthreading is usually a poor fit. If you are properly utilizing your cores, your jobs will actually be slowed by using hyperthreading.  They are not 'extra' cores, but a method of swapping a core to a different workload d

[slurm-users] Using hyperthreaded processors

2020-11-04 Thread Jean-Christophe HAESSIG
Hi, I would like to make good use of hyperthreaded processors and I already skimmed through a quantity of posts and documentation. It is pretty clear that Slurm likes to allocate processing units up to the core level, and to be able to allocate threads one has to either : - not declare Sockets/Co