On Fri, Mar 20, 2015 at 04:18:26PM +0100, Christian Schmidt wrote:
Please can you reconfigure the queue to assign tasks to nodes such
that large parallel jobs will not be split up to fill in all small
spaces on the queue, but rather will be run on the minimum number of
complete nodes?"
We are not sure how to achieve this. Could you please give a any hint?
Start with the "sge_pe" manage. There are a few different ways that SGE
can spread jobs around.
You want to change the "allocation_rule" to "$fill_up", which will
allocate as many slots on a single box as possible on the "least loaded"
node, before moving on to the next node, then the next. The default
method is "$round_robin", which--as you've noticed--spreads things
around quite a bit.
You might also consider the "$pe_slots" setting, which forces *all*
slots to be allocated on a single node. (Note that this could cause
some problems with actually scheduling the job, since it may be a long
time before an entire compute node is free...)
--
Jesse Becker (Contractor)
_______________________________________________
users mailing list
[email protected]
https://gridengine.org/mailman/listinfo/users
