[Kappa-users] Guaranteed number of nodes for green partition

[Per Lundqvist]

On Mon, 14 Feb 2011, Per Lundqvist wrote:

> On Fri, 28 Jan 2011, Per Lundqvist wrote:
> 
> > On Fri, 14 Jan 2011, Per Lundqvist wrote:
> > 
> > > As agreed upon the last user meeting the oversubscribe factor has been
> > > increased from 2.0 to 2.5, resulting in the following new limits:
> > > 
> > >      liu1 = round(29/19 * 2.5) = 4
> > >      liu5 = round(29/16 * 2.5) = 5
> > 
> > Since there seems to be room for additional oversubscription within
> > the green partition, we (me, Peter Steneteg and Peter Münger) have
> > agreed to increase this factor further to 3.5, which gives:
> > 
> >       liu1 = round(29/19 * 3.5) = 5
> >       liu5 = round(29/16 * 3.5) = 6
> 
> As you may have noticed this latest change has caused the green
> partition to sometimes be full and some jobs have had to queue before
> starting. Therefore we set the oversubscription factor back to 2.5
> again. This will take effect after 0900 today. The new limits for
> maximum nodes per user is:
> 
>       liu1 = round(29/19 * 2.5) = 4
>       liu5 = round(29/16 * 2.5) = 5

FYI: Since the liu1 group as of today contains 21 users, liu1 maximum
number of guaranteed nodes within the green partititon has been
reduced from 4 to 3:

    liu1 = round(29/21 * 2.5) = 3

(liu5 still has a limit of 5)

/Per Lundqvist

-- 
Per Lundqvist

National Supercomputer Centre
Linköping University, Sweden

http://www.nsc.liu.se