[Beowulf] slow jobs when run through queue

Peter Kjellström cap at nsc.liu.se
Wed Dec 6 01:09:20 PST 2017

On Wed, 6 Dec 2017 16:47:42 +1100
Nick Evans <nick.c.evans at gmail.com> wrote:

> Thanks Brian / Carl / Chris for places to look.... it turned out to
> be what Chris had mentioned and they were only requesting 1 CPU but
> trying to use all 48 in the machine.

If you got only a 4x performance reduction when running a 48x over
subscribe on 1/48 the amount of cores then something is wrong with
your base line. That is, the "run without queue system" case seems

/Peter K

Sent from my Android device with K-9 Mail. Please excuse my brevity.
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