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 <mat...@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
> mat...@caltech.edu
> Manager, Sequence Analysis Facility, Biology Division, Caltech
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