[Mauiusers] Re: maui not schedulling jobs in avaliable resources

Brian Christiansen bchristiansen at clusterresources.com
Fri Feb 27 09:25:51 MST 2009


Roy,

I have your patch. I'll look at it and let you know.

Thanks,
Brian Christiansen

Roy Dragseth wrote:
> On Sunday 22 February 2009 13:25:59 Roy Dragseth wrote:
>   
>> Hi,
>>
>> I think I've got the solution coded now.  By introducing a new config
>> parameter, IDLEJOBDEPTH, one can get maui to continue to parse down the
>> idle job chain until it reaches the IDLEJOBDEPTH limit.  The default value
>> is 1 to preserve the current behaviour of maui or else the patch will not
>> be accepted by CR.  My plan is to use this in combination with a per user
>> based MAXIJOB to prevent single users from flooding the queue.  If you set
>> IDLEJOBDEPTH to the total number of job slots in your cluster you should be
>> able to fill the available job slots within a reasonably few iterations.
>>
>> It's not the optimal solution, one should perhaps introduce some logic that
>> understands why some jobs might be idle while others further down the chain
>> can run, but given the potential complexity introduced by combining
>> classes, standing reservations and node features I'm not clever enough to
>> figure out how.
>>
>> I'll submit a patch against v3.2.6p21 to bugzilla for review by CR  as soon
>> as its up and running again, I get this error right now
>>     
>
> It seems to take a while before the bugzilla comes online so here's the patch.
>
> Can anyone at CR tell me if this will be accepted or not?  Please let me know 
> if something is missing or not acceptable for inclusion into the maui 
> mainline.
>
> We've been running maui with this patch since Sunday 23rd and the utilization 
> has increased by almost 15%.
>
>
> r.
>
>   
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