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

Stijn De Weirdt stijn.deweirdt at ugent.be
Wed Apr 1 10:06:54 MDT 2009


hi tom,

i couldn't find your original mail, but found the patch
http://www.clusterresources.com/pipermail/mauiusers/2008-June/003405.html

it's working great. speed is now limited again by gold interaction, but
at least i now get approx 2 jobs/sec, so a 4 time increase.

thanks a lot!!

stijn

> 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
> >   
> 
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