Hi Marcus, What just came to my mind: if you don’t set —ntasks isn’t the default just 1? All examples I know using ntasks-per-node also set ntasks with ntasks >= ntasks-per-node.
Best, Andreas > Am 14.02.2019 um 06:33 schrieb Marcus Wagner <[email protected]>: > > Hi all, > > I have narrowed this down a little bit. > > the really astonishing thing is, that if I use > > --ntasks=48 > > I can submit the job, it will be scheduled onto one host: > > NumNodes=1 NumCPUs=48 NumTasks=48 CPUs/Task=1 ReqB:S:C:T=0:0:*:* > TRES=cpu=48,mem=182400M,node=1,billing=48 > > but as soon as I change --ntasks to --ntasks-per-node (which should be the > same, as --ntasks=48 schedules onto one host), I get the error: > > sbatch: error: CPU count per node can not be satisfied > sbatch: error: Batch job submission failed: Requested node configuration is > not available > > > Is there no one else, who observes this behaviour? > Any explanations? > > > Best > Marcus > > >> On 2/13/19 1:48 PM, Marcus Wagner wrote: >> Hi all, >> >> I have a strange behaviour here. >> We are using slurm 18.08.5-2 on CentOS 7.6. >> >> Let me first describe our computenodes: >> NodeName=ncm[0001-1032] CPUs=48 Sockets=4 CoresPerSocket=12 >> ThreadsPerCore=2 RealMemory=185000 Feature=skx8160,hostok,hpcwork >> Weight=10541 State=UNKNOWN >> >> we have the following config set: >> >> $>scontrol show config | grep -i select >> SelectType = select/cons_res >> SelectTypeParameters = CR_CORE_MEMORY,CR_ONE_TASK_PER_CORE >> >> >> So, I have 48 cores on one node. According to the manpage of sbatch, I >> should be able to do the following: >> >> #SBATCH --ntasks=48 >> #SBATCH --ntasks-per-node=48 >> >> But I get the following error: >> sbatch: error: Batch job submission failed: Requested node configuration is >> not available >> >> >> Has anyone an explanation for this? >> >> >> Best >> Marcus >> > > -- > Marcus Wagner, Dipl.-Inf. > > IT Center > Abteilung: Systeme und Betrieb > RWTH Aachen University > Seffenter Weg 23 > 52074 Aachen > Tel: +49 241 80-24383 > Fax: +49 241 80-624383 > [email protected] > www.itc.rwth-aachen.de > >
