[GE users] consumable license complexes and preemption

reuti reuti at staff.uni-marburg.de
Wed Nov 17 15:13:02 GMT 2010


Am 17.11.2010 um 15:34 schrieb sgenedharvey:

>> From: reuti [mailto:reuti at staff.uni-marburg.de]
>> 
>> do you also observe this when you submit the job requiring 2 different
>> resources with "-R y"? The resource reservation is not limited to slots
> for
> 
> Oh.  Thanks for bringing this to my attention.  I had no idea that the
> concept of a reservation already exists.  It's kind of hard for me to test
> it out though.  Does it work the way I think it works?
> 
> If there's a hi-pri job waiting in queue...  And it requests resource A and
> B...  And there are a million low-pri jobs that only need A...  And there
> are another million low-pri jobs that only need B...
> 
> If a running job finishes and releases one resource A ... but there is no
> resource B available yet ...  Will the hi-pri job grab the one available A,
> and keep it across dispatch intervals, thus preventing the low-pri job from
> starting which only needs A, even though the hi-pri job still can't run yet?

http://wikis.sun.com/display/gridengine62u5/Scheduling+Strategies

section "Resource Reservation and Backfilling".

-- Reuti


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