Brian Smith <[email protected]> writes:

> max_reservation seems to set the limit on the number of complex
> attributes that can be reserved by the highest priority jobs for the
> purposes of preventing starvation by smaller jobs contending for fewer
> resources.  So, if I set max_reservations to 128 and someone submits a
> 256 processor job, its very possible that the job will be starved on a
> highly utilized system.

What version is behaving like that?  I have max_reservations 30 and
there are currently these reservations (and, I hope, a patient submitter
of the long-running 128-core jobs):

# qsched -a
job-ID    user      start                end                  slots h_vmem
--------  --------  -------------------  -------------------  ----- ------
154082.1  ********  08/25/2012 09:46:19  08/30/2012 09:51:19     32 2000M
154389.1  ********  08/27/2012 17:45:53  09/04/2012 17:49:53     64 4000M
154585.1  ********  08/28/2012 00:36:22  09/01/2012 00:41:22     32 4000M
154486.1  ********  08/28/2012 05:05:26  09/02/2012 05:10:26     36 2000M
153880.1  ********  08/30/2012 09:51:19  09/04/2012 09:56:19    128 2000M
153881.1  ********  09/04/2012 09:56:19  09/09/2012 10:01:19    128 2000M
153884.1  ********  09/09/2012 10:01:19  09/14/2012 10:06:19    128 2000M
153885.1  ********  09/14/2012 10:06:19  09/19/2012 10:11:19    128 2000M
153886.1  ********  09/19/2012 10:11:19  09/24/2012 10:16:19    128 2000M
153887.1  ********  09/24/2012 10:16:19  09/29/2012 10:21:19    128 2000M
153888.1  ********  09/29/2012 10:21:19  10/04/2012 10:26:19    128 2000M
153889.1  ********  10/04/2012 10:26:19  10/09/2012 10:31:19    128 2000M
153891.1  ********  10/09/2012 10:31:19  10/14/2012 10:36:19    128 2000M

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