[GE users] job priority question

Reuti reuti at staff.uni-marburg.de
Thu Aug 31 11:17:44 BST 2006


Hi,

Am 31.08.2006 um 10:53 schrieb Davide Cittaro:

> Hi there, I have a question on priorities.
> Suppose I have two users, one that is "bombing" sge with several  
> jobs, many of which remaining in queues because he fills the  
> requested queue. Suppose that the other user has to send a job to  
> the same queue. Since there is no policy defined there is no reason  
> why I have to give much more "importance" to one user, I wonder  
> what happens to the job of the second user, meaning that I wonder  
> if its jobs has to wait that all the other user's jobs end or if it  
> runs as soon as one slot in the queue is available. In other words:
>
> ###################################################################### 
> ######
>  - PENDING JOBS - PENDING JOBS - PENDING JOBS - PENDING JOBS -  
> PENDING JOBS
> ###################################################################### 
> ######
>     340 0.00000 simple.sh  userA     qw    08/31/2006 10:17:35     1
>     341 0.00000 simple.sh  userA     qw    08/31/2006 10:17:35     1
>     342 0.00000 simple.sh  userA     qw    08/31/2006 10:17:35     1
>     343 0.00000 simple.sh  userA     qw    08/31/2006 10:17:35     1
>     344 0.00000 simple.sh  userA     qw    08/31/2006 10:17:35     1
>     345 0.00000 simple.sh  userA     qw    08/31/2006 10:17:35     1
>     346 0.00000 simple.sh  userA     qw    08/31/2006 10:17:35     1
>     347 0.00000 simple.sh  userB     qw    08/31/2006 10:17:35     1
>
> job 347 has to wait that jobs 340-346 have finished or it goes  
> before 340 since userA has a lot of other jobs to run?
> I suppose that in default conditions job 347 is the last job that  
> will run on the cluster, so is there a way to instruct the  
> scheduler so that if one user (userA) has a lot of jobs pending,  
> their priority is set lower than priority of a user (userB) that  
> has few jobs even if he submitted his job after?
> Mmm, don't know if I have been that clear...

please have a look here, which might help:

http://gridengine.info/articles/tag/fairshare,

-- Reuti

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