[Mauiusers] USAGE Job priority factor?

Angel de Vicente angelv at iac.es
Wed Oct 26 07:37:49 MDT 2005


Hi,

thanks for the suggestion. We already use fairshare, but from my understanding
of fairshare I don't see how I can use it for what I want to accomplish.

At the moment I have a 40+ fairshare target for a group of users (group nhd)
(those who paid part of the cluster), so it works fine for them.

But how could I say to Maui "if someone is already running something or he/she
has run something during the last few days give his/her jobs less priority"?

For starters, I do not want to specify the fairshare target for each individual
user, as users come and go, and that would mean changing the policies
regularly. What I would like to say to Maui is: "just try to make the fairshare
usage equal for all users, except the group nhd, which has a 40% target", and I
don't see how to do this.

Also if I set user A and B a fairshare target of, say, 10, then once both of
them have gotten a fairshare above 10, then Maui would not take this into
consideration, right? If user A has used 60% and user B has used 15%, Maui would
not give advantage to user B, which doesn't look fair... By rereading the
documentation, maybe I'm wrong in this. Maybe this was true in the case of a
fairshare target of 10+ but not if the target was set to 10, right?

Thanks a lot,
Angel

Caird, Andrew J writes:
 > Angel,
 > 
 > I think what you want is fairshare; we use that here for doing exactly
 > what you describe.
 > 
 > Check out:
 > http://www.clusterresources.com/products/maui/docs/6.3fairshare.shtml
 > and see if that sounds like what you want.
 > 
 > Good luck.
 > --andy
 > ----
 > University of Michigan Engineering/Center for Advanced Computing
 > http://cac.engin.umich.edu     acaird at umich.edu     734.647.5273
 >   
 > 
 > > -----Original Message-----
 > > From: mauiusers-bounces at supercluster.org 
 > > [mailto:mauiusers-bounces at supercluster.org] On Behalf Of 
 > > Angel de Vicente
 > > Sent: Wednesday, October 26, 2005 9:14 AM
 > > To: mauiusers at supercluster.org
 > > Subject: [Mauiusers] USAGE Job priority factor?
 > > 
 > > Hi all,
 > > 
 > > I'm trying to modify our site policies so that people who 
 > > have been running jobs recently get less priority than people 
 > > who haven't.
 > > 
 > > By looking at the documentation, I found in section 5.1.2
 > > (http://www.clusterresources.com/products/maui/docs/5.1.2prior
 > > ityfactors.shtml)
 > > what I thought it would do the trick: the USAGE component.
 > > 
 > > As the documentation doesn't give any details about its 
 > > subcomponents, I thought I would just try it, but as you can 
 > > see below, neither the Consumed, Remaining or Percent 
 > > subcomponents get any points (and the last four jobs are from 
 > > someone who has been using the cluster intensively during the 
 > > last few months).
 > > 
 > > Does anybody know how these work?
 > > 
 > > Thanks a lot,
 > > Angel de Vicente
 > > 
 > > -------------------------
 > > 
 > > [root at nodo1 root]# diagnose -p
 > > diagnosing job priority information (partition: ALL)
 > > 
 > > Job                    PRIORITY*     FS(Group)  
 > > Serv(QTime:XFctr)   Res( Proc)   Res(Cons :Rem  :PerC )
 > >              Weights   --------     100(   10)     1(    1: 
 > > 1000)   200(   10)     1(    1:    1:    1)
 > > 
 > > 1626                      72466    54.2(39302)   
 > > 1.6(105.7:1058.)  44.2(32000)   0.0(  0.0:  0.0:  0.0)
 > > 1596                      44133     0.0(  0.0)  
 > > 27.5(9213.:2919.)  72.5(32000)   0.0(  0.0:  0.0:  0.0)
 > > 1594                      43745     0.0(  0.0)  
 > > 26.8(8892.:2852.)  73.2(32000)   0.0(  0.0:  0.0:  0.0)
 > > 1582                      40711     0.0(  0.0)  
 > > 21.4(7022.:1688.)  78.6(32000)   0.0(  0.0:  0.0:  0.0)
 > > 1597                      38703     0.0(  0.0)  
 > > 17.3(5193.:1509.)  82.7(32000)   0.0(  0.0:  0.0:  0.0)
 > > 1604                      35966     0.0(  0.0)  
 > > 11.0(2701.:1264.)  89.0(32000)   0.0(  0.0:  0.0:  0.0)
 > > 
 > > Percent Contribution   --------    14.3( 14.3)  16.1( 12.0:  
 > > 4.1)  69.6( 69.6)   0.0(  0.0:  0.0:  0.0)
 > > 
 > > * indicates system prio set on job
 > > 
 > > [root at nodo1 root]#
 > > --
 > > ----------------------------------
 > > http://www.iac.es/galeria/angelv/
 > > 
 > > PostDoc Software Support
 > > Instituto de Astrofisica de Canarias
 > > 
 > > _______________________________________________
 > > mauiusers mailing list
 > > mauiusers at supercluster.org
 > > http://www.supercluster.org/mailman/listinfo/mauiusers
 > > 

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