[GE users] Interactive and batch queue preemting eachother

Shruti Iyengar Shruti.Iyengar at synopsys.com
Tue Aug 15 01:07:32 BST 2006


Thanks a lot, it helped solve the case :-).


-----Original Message-----
From: Bevan C. Bennett [mailto:bevan at fulcrummicro.com] 
Sent: Friday, August 11, 2006 4:04 PM
To: users at gridengine.sunsource.net
Subject: Re: [GE users] Interactive and batch queue preemting eachother

Shruti Iyengar wrote:
> Hi Bevan,
> 
> Actually, that's what I thought of first, but then realized it would
> mean suspension of running jobs and we don't want that to happen.

This never suspends running jobs. You just can't have both queues active
at once
on any given server. The first batch job to hit a queue instance locks
out all
interactive jobs from that server and vice versa.

We use this method to implement an 'unshared' queue that only supports
one slot
per system

> Basically, R&D pool in current scenario has to dedicate certain
systems
> to be interactive while others to be batch...so that load on
interactive
> machines is light even though no. of interactive sessions are
huge...So,
> now going to next level, they want to minimize idle time...in other
> words, if an interactive system/batch system is sitting idle and
another
> kind of job is looking for a slot, it should take over....don't want
to
> mix the two because of type of job and load involved....at any point
of
> time, it should either be a batch machine or an interactive machine,
> depending on whichever took over the system first.

> This is pretty straightforward, actually.
> Queue 1: batch.q
> slots: N
> subordinates: interactive.q (max slots 1)
> 
> Queue 2: interactive.q
> slots: N
> subordinates: batch.q (max slots 1)
> 
> As soon as one job is submitted to a host instance of batch.q, the
> interactive.q
> on that host is subordinated (disabled), and vice versa.

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