Have you Seen the slurm FAQ? You may want to search on that site for "Hyperthreading"
(Sorry for the TOFU. vacation, mobile) Am 30. April 2019 18:07:03 MESZ schrieb Jean-mathieu CHANTREIN <jean-mathieu.chantr...@univ-angers.fr>: >Hello, > >Most jobs of my users are single-thread. I have multithreaded >processors. The jobs seem to reserve 2 logical CPU (1 core=2 CPU (2 >threads)) whereas it only uses 1 logical CPU(1 thread). Nevertheless, >my slurm.conf file indicates: > >[...] >SelectType = select / cons_res >SelectTypeParameters = CR_CPU >FastSchedule = 1 >[...] >NodeName = DEFAULT Boards = 1 SocketsPerBoard = 2 CoresPerSocket = 18 >ThreadsPerCore = 2 RealMemory = 128000 > >And here is an excerpt from the output of a job running on this type of >node: >$ scontrol show job idjob >[...] >NumNodes=1 NumCPUs=1 NumTasks=1 CPUs/Task=1 ReqB:S:C:T=0:0:*:* >TRES=cpu=1,mem=200M,node=1,billing=1 >Socks/Node=* NtasksPerN:B:S:C=0:0:*:* CoreSpec=* >MinCPUsNode=1 MinMemoryCPU=200M MinTmpDiskNode=0 >Features=(null) DelayBoot=00:00:00 >OverSubscribe=OK Contiguous=0 Licenses=(null) Network=(null) > >But with [ >https://github.com/OleHolmNielsen/Slurm_tools/tree/master/pestat | >pestat ] , I can see my node use 72/72 CPU but have only 36 job >running like this one. > >How should I do so that jobs are allocated to the thread and not to the >core ? > >Best regards. > >Jean-Mathieu > > -- Diese Nachricht wurde von meinem Android-Gerät mit K-9 Mail gesendet.
