Thanks for your comment.
I understood as follows. In the case of a typical Linux cluster, 'Batchhost' would be the compute node zero of the allocation. * From BatchHost at https://slurm.schedmd.com/squeue.html Therefore, it is not necessary to specify the '--batch' option. Regards, Tomo -----Original Message----- From: slurm-users [mailto:slurm-users-boun...@lists.schedmd.com] On Behalf Of Marcus Wagner Sent: Wednesday, October 02, 2019 3:47 PM To: slurm-users@lists.schedmd.com Subject: Re: [slurm-users] "--batch" option of the sbatch command Hi Loris, as far as i can read the man page, it indicates that the BatchHost (the node, where the batchscript gets executed) will be one of the types asked for by --batch. Moreover, if the allocation does not have any of the requested --batch-features, the job will start as usually on the first allocated node. @Tomo So, if you want to use the broadwell node, just use -C broadwell best Marcus On 10/2/19 8:23 AM, Loris Bennett wrote: > Hi Tomo, > > "Uemoto, Tomoki" <fj277...@aa.jp.fujitsu.com> writes: > >> Hi,all >> I'm working with slurm 18.08.6 on RHEL7.6 >> manager : 1node >> computes: 2nodes (c001:haswell,c002:broadwell) >> >> I am checking the --batch option of the sbatch command. >> The following Features were set for testing. >> >> # scontrol update nodename=c001 Features=haswell >> # scontrol update nodename=c002 Features=broadwell >> >> And submitted a sleep job. >> >> $ cat sleep_60.sh >> #!/bin/bash >> >> #SBATCH -J sleep_60 # Job name >> #SBATCH -o job.%j.out # Name of stdout output file (%j expands to >> jobId) >> >> prun sleep 60 >> $ >> >> $ sbatch --batch=broadwell --constraint="haswell|broadwell" >> sleep_60.sh $ squeue -l Wed Oct 2 13:50:40 2019 >> JOBID PARTITION NAME USER STATE TIME >> TIME_LIMI NODES NODELIST(REASON) >> 28 normal sleep_60 test RUNNING 0:03 >> 1-00:00:00 1 c001 >> $ >> >> I thought the job would be executed in "c002(broadwell)" by the designation >> of "--batch=broadwell". >> However the job was executed in "c001(haswell)" >> Why isn't it running on "c002(broadwell)" ? >> >> Regards, >> Tomo > I haven't come across this before, but the documentation seems to > indicate that the option '--batch' applies only to the batch step. > The actual job step, in your case the 'sleep' can then run on any node > satisfying the condition given via the option '--constraint', so in > your case either your Broadwell or you Haswell node. > > However, I would have thought that, all things being equal, the batch > step and the job step would run on the same node. However, I'm not > sure how a constrain with 'or' is resolved if multiple solutions are > available. > > What happens if you write the constraint as > > --constraint="broadwell|haswell" > > ? > > Cheers, > > Loris > -- 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 wag...@itc.rwth-aachen.de www.itc.rwth-aachen.de
