[Beowulf] slow jobs when run through queue

Peter Clapham pc7 at sanger.ac.uk
Tue Dec 19 08:41:44 PST 2017


Show back of utilization and use patterns openly also removes admins from being “the Police”. 

Instead each user of the system can see who is requesting excessive memory, using inappropriate queues or just inefficient workloads at scale. This creates a self-Policing environment and certainly both re-enforces a community feel and improves communication between the groups of users. 
Pete

On 12/6/17, 6:36 PM, "Beowulf on behalf of Tim Cutts" <beowulf-bounces at beowulf.org on behalf of tjrc at sanger.ac.uk> wrote:

    Of course, if you charge for your cluster time, that hurts them in the wallet, since they pay for all the allocated unused time.  If you don’t charge (which is the case for us) it’s hard to incentivise them not to do this.  Shame works, a bit.  We publish cluster analytics showing CPU efficiency and memory efficiency league tables for the users, and that has had some good effects in the past...
    
    Tim
    
    > On 6 Dec 2017, at 18:20, David Mathog <mathog at caltech.edu> wrote:
    > 
    > on Wed, 06 Dec 2017 21:39:20 +1100 Chris Samuel wrote:
    >> If this is, as I suspect is likely, bioinformatics code it could well be that
    >> it is a pipeline type application and only part of the application may be able
    >> to make use of parallelism (and then might not be very good at it).
    > 
    > Exactly.  Super frustrating to set something like '--cpus=40' and then watch the resulting heap of programs sit for long periods of time (hours, not seconds) running only on a single CPU.
    > 
    > Regards,
    > 
    > David Mathog
    > mathog at caltech.edu
    > Manager, Sequence Analysis Facility, Biology Division, Caltech
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-- 
 The Wellcome Trust Sanger Institute is operated by Genome Research 
 Limited, a charity registered in England with number 1021457 and a 
 company registered in England with number 2742969, whose registered 
 office is 215 Euston Road, London, NW1 2BE.


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