On Fri, 16 Apr 2004, Stephen Burke wrote:
> On Fri, 16 Apr 2004, Gordon, JC (John) wrote:
> > > .. You can't , GLUE assumes all hardware is the same.
> > > Select some middle ground perhaps with the exception of
> > > memory where you should publish the smallest memory available.
> >
> > GLUE has subclusters which should be heterogeneous. A cluster can then
> > consist of a number of clusters. That was the plan anyway. Whether CEs
> > actually map onto clusters I cannot confirm.
>
> Unfortunately it doesn't work that way. The RBs don't have a mechanism
> for dealing with multiple subclusters so we have the restriction that
> a CE can only map to a single subcluster, which is defined by GLUE to
> be completely homogeneous (in principle down to things like exact
> processor type and clock speed). Even if the RB could direct jobs
> to a particular subcluster among many the schema is faulty in that
> it doesn't tell you how many nodes are in a subcluster, and things
> like the number of running jobs, free cpus, estimated traversal time
> etc are all defined at the CE (queue) level so you couldn't do
> scheduling at a subcluster level.
Can you do it if different queues point at different hardware, I mean
at the infomation level, actually being able to do it in the configuration
is another matter.
Steve
>
> Stephen
>
--
Steve Traylen
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