[GE users] Timebased configuration of slots in "mpi" environment.

jesperkrogh jesper at krogh.cc
Tue Aug 11 14:13:21 BST 2009


    [ The following text is in the "utf-8" character set. ]
    [ Your display is set for the "ISO-8859-10" character set.  ]
    [ Some characters may be displayed incorrectly. ]

> Am 11.08.2009 um 10:18 schrieb jesperkrogh:
>
>> I have a small cluster with 208 slots .. during working hours I'd
>> like to
>> limit the mpi pe-environment to 190 slots  and raise it to 208 during
>> night.
>
> what should happen to the running jobs when the limit is lowered again?
>
> If the definition in the PE, you could use a cron job to change the
> settings. SGE also supports calendars, but these are bound to queues
> (i.e. queue instances). The complete cluster has more nodes in total
> than the intended maximum in this PE, hence the PE is not just bound
> to certain hosts?

We do aggressively try to "checkpoint" the mpi-runs and run them in slices
of 1h each, så lowering the number will effective take 1 hours to apply.
Thats fully acceptable. I'll look at the suggestion about making cron
reconfigure gridengine every now and then.

Thanks.

Jesper

------------------------------------------------------
http://gridengine.sunsource.net/ds/viewMessage.do?dsForumId=38&dsMessageId=211822

To unsubscribe from this discussion, e-mail: [users-unsubscribe at gridengine.sunsource.net].



More information about the gridengine-users mailing list