[GE users] backfilling in SGE 6.2

reuti reuti at staff.uni-marburg.de
Fri Sep 11 15:11:15 BST 2009


Am 11.09.2009 um 15:01 schrieb tgebert:

> does anybody know if it's possible to disable the backfilling  
> mechanism in the Sun Grid Engine, so that the scheduler just does a  
> FIFO scheduling?
> The background is that I want to achieve a pure priority based  
> scheduling and job submission. Actually I am facing the problem  
> that small jobs ( 8 procs ) are preferred even if they have a lower  
> priority in the pending jobs.
> I already have tried the "-R y" option, but somehow this won't  
> work. Even when I submit a job with e.g. 64 procs request and the "- 
> R y" option and a higher priority than an 8 proc request job, the 8  
> proc job starts first and prevents the 64 proc job from running.
> I hope anybody out there was facing the same problem once before  
> and knows how to work around or solve this.

what were the time used during submission, i.e. h_rt? Otherwise the  
default time will be applied to all jobs. You also adjusted the  
scheduler configuration to have an entry being not zero max_reservation?

-- Reuti


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