Your Slurm configuration is likely not tuned to support all of the message traffic associated with short-lived job arrays. See:
http://slurm.schedmd.com/high_throughput.html

On 2016-07-13 07:49, Carlos Fenoy wrote:
Hi,

I've seen the same with 15.08.4 version. When running array  jobs with
just the "hostname" command, makes some jobs to stay in the running
state for several minutes.

Regard,
Carlos

On Wed, Jul 13, 2016 at 3:38 PM, Marcin Stolarek
<stolarek.mar...@gmail.com> wrote:

Hi guys,

I have a cluster with a few nodes. Users are submitting job arrays
with like 50k tasks in array, some jobs are finishing within less
than second. I observed a lot of tasks are in running state for a
few minutes even if user process finished after a second.

I'm using 14.11.6, anyone with similar workload, observations?

cheers,
marcin

--

--
Carles Fenoy

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