The backfill scheduler does not change the state of any jobs (other
than the once it starts). If there is a high priority job in the
queue, the lower priority jobs will retain a reason of "Priority"
unless it can not be started due to some limit, down nodes, etc.
Having more accurate job time limits can help with backfill
scheduling. One thing that some sites do is require that the user
explicitly specify a job time limit.
Quoting Ulf Markwardt <[email protected]>:
Dear all,
we have a large number of "Priority" jobs and a nearly empty system
collecting resources for two large jobs.
When I change the numbers in
SchedulerType=sched/backfill
SchedulerParameters=defer,default_queue_depth=30,max_job_bf=30
to 300 I would expect to diminish the number of jobs pending for
"Priority" after an "scontrol reconfigure".
This does not happen. Have I misunderstood these parameters?
Thanks,
Ulf
--
___________________________________________________________________
Dr. Ulf Markwardt
Technische Universität Dresden
Center for Information Services and High Performance Computing (ZIH)
01062 Dresden, Germany
Phone: (+49) 351/463-33640 WWW: http://www.tu-dresden.de/zih
