I am pretty sure that I see the problem and it is related to job preemption combined with a relatively large number of jobs. I'll see if we can speed things up. ________________________________________ From: [email protected] [[email protected]] On Behalf Of Bjørn-Helge Mevik [[email protected]] Sent: Wednesday, February 16, 2011 6:50 AM To: [email protected] Subject: Re: [slurm-dev] Slow backfill testing of some jobs.
[email protected] (Bjørn-Helge Mevik) writes: > At the time, about 1000 running jobs, and about 1000 queued jobs. I forgot: we tried the same jobs again, now with 1189 running jobs (7 of which are lowpri), 323 pending jobs (no lowpri jobs). Specifying --ntasks=1 --nodelist=compute-0-1 --constraint=hugemem took 6 seconds, specifying --ntasks=1 --nodelist=compute-0-1 --constraint=hugemem*1 took 3 seconds. -- Bjørn-Helge Mevik, dr. scient, Research Computing Services, University of Oslo
