[Beowulf] Green Cluster?

[Perry E. Metzger]

Greg Lindahl <lindahl at pbm.com> writes:
> On Sun, Jul 20, 2008 at 01:31:27PM -0400, Perry E. Metzger wrote:
>
>> So probably you don't want to turn off the nodes automatically, you
>> want to turn them *off*. If your cluster is half idle, why bother
>> turning it on at all?
>
> Some people have clusters used for undergraduate instruction. So
> they're very busy before assignments are due, and not so busy during
> the rest of the time. That's only one of many reasons someone might
> intentionally have idle nodes.

If the cluster is large enough, there are probably other potential
users on the campus who would be very very happy to get at the cycles
on a "lower priority" basis. That said, if one really wants to do it,
I'd go for wake-on-lan...

-- 
Perry E. Metzger		perry at piermont.com