[Mauiusers] Re: [torqueusers] maui + torque job start rate

Tom Rudwick tomr at intrinsity.com
Thu Apr 9 10:16:55 MDT 2009


If you mean the second MPBSJobModify, my understanding is that that call 
was supposed
to work around an old bug in PBS.

Tom


Ling C. Ho wrote:
> Hi Tom,
>
> In your patch, you have commented out both MPBSJobModify calls before 
> and after pbs_asystart(). I can understand the first MPBSJobStart() 
> which set the node where the job should run. What is the purpose of 
> the second MPBSJobStart as it set the neednodes to 1?
>
> Thanks,
> ...
> ling
>
> Tom Rudwick wrote:
>
>> If you search the maui list archives for my asynchronous job start patch
>> you can increase that speed greatly.
>>
>> Tom
>>
>>
>> Stijn De Weirdt wrote:
>>> hi all,
>>>
>>> (this is a crosspost to both maui and torque users list)
>>>
>>> we are having issues with the job start rate using maui+torque. 
>>> starting
>>> a job takes on average 2 seconds, which is slow for what our users are
>>> dumping in our queues.
>>>
>>> with a job start i mean the following cycle
>>> 04/01 10:01:08 MRMJobStart(374900,Msg,SC)
>>> 04/01 10:01:08 MPBSJobStart(374900,gengar,Msg,SC)
>>> 04/01 10:01:08
>>> MPBSJobModify(374900,Resource_List,Resource,node088.gengar.gent.vsc)
>>> 04/01 10:01:10 MPBSJobModify(374900,Resource_List,Resource,1)
>>> 04/01 10:01:10 INFO:     job '374900' successfully started
>>> 04/01 10:01:10 INFO:     command sent to server
>>> 04/01 10:01:10 INFO:     response received from server
>>>
>>> i've already tried to follow the "large cluster" tuning tips to see if
>>> it helps, but no real result. (the only tip that might solve the
>>> problemn is the asyncstart option from moab ;). (we have a 200 node, 8
>>> core/node cluster (i actually don't think this is "large"))
>>>
>>> anyway, before i dig in the code looking for options, i'm wondering 
>>> what
>>> other people are seeing as minimal start time, so i know if it is
>>> possible at all.
>>>
>>> many thanks,
>>>
>>> stijn
>>>   
>>
>> _______________________________________________
>> torqueusers mailing list
>> torqueusers at supercluster.org
>> http://www.supercluster.org/mailman/listinfo/torqueusers
>
>



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