[GE users] Advanced Reservation

Marko Krznaric marko at imperial.ac.uk
Thu Jan 19 16:32:56 GMT 2006


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Hi there,

Thanks Stephan/Andreas for your replies.

One can do a bit with RR+BF, but that's not exactly what
I'm looking for. What I exactly mean could be best
described by:
   "I need a compute resource (with these specs) tomorrow
   between 4-6pm. Could you provide it to me? If so, how much?"

Grid Engine does quite a good job in making the best usage of
resources by looking at which jobs are currently in the queue.
However, it's not difficult to imagine numerous situations
where AR is desirable or even necessary.

In a way, the idea of RR and AR doesn't differ much. The
main difference is that job needs to be scheduled not
necessary 'as soon as possible or now' (as with RR), but
some time in the future (the idea of AR). Backfilling is
the common concept in both cases, as pointed in the Andreas'
document.

Are there any plans for integrating AR on SGE? I was told
that some of AR stuff might be integrated in the new release
of the SGE. Do you anything about it?

Kind regards,
Marko


Andreas Haas wrote:
> Marko,
> 
> as Stephan said we do not yet have AR with Grid Engine. Yet there is
> a subset of AR use cases that can be solved based on 6.0 RR+BF
> 
>    http://gridengine.sunsource.net/nonav/source/browse/~checkout~/gridengine/doc/devel/rfe/resource_reservation.txt?content-type=text/plain
> 
> the idea is that RR-monitoring capabilities (see under 2d Monitoring") could
> be used as a means to provide information on job reservations. Based on that
> it were possible e.g. to write a set of scripts
> 
>    qarsub
>    qarstat
>     :
> 
> that could be used by your users to deal with advance reservations. Though
> unfortunately the case you're asking for of requesting a reservation for a
> specific time couldn't be solved either due to
> 
>    http://gridengine.sunsource.net/issues/show_bug.cgi?id=921
> 
> but possibly you mentioned this just to illustrate the difference between AR
> and RR ...
> 
> Maybe this helps.
> 
> Regards,
> Andreas
> 
> 
> 
> On Wed, 18 Jan 2006, Marko Krznaric wrote:
> 
> 
>>Hi there,
>>
>>Is there a possibility for a user to reserve an SGE resource,
>>that is, is advanced reservation implemented in SGE?
>>
>>For example, I'd like to book a compute resource tomorrow
>>from 4-6pm and be guaranteed that resource? Could I do that
>>without bothering SGE admin?
>>
>>I've heard that Maui scheduler, which could be used as an
>>external scheduler for the SGE, supports advanced reservation.
>>However, I couldn't make SGE/Maui to work together. Maui
>>could (successfully) be integrated to other, mostly PBS-based,
>>resource management systems - however, I want to stick with
>>the SGE.
>>
>>I believe that the advanced reservation functionality is
>>getting more and more important and it would be a great
>>addition to the SGE. Of course, forgive me if such a thing
>>already exists :-)
>>
>>Thanks and best wishes,
>>Marko
>>
>>
>>--
>>Dr Marko Krznaric
>>Department of Computing, Imperial College London, UK
>>
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-- 
Dr Marko Krznaric
Department of Computing, Imperial College London, UK

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