Re: [BProc] dual processor slowness

[Steven J. <py...@li...>]

Greetings,

Any chance hyperthreading is turned on?

G'day,
sjames


-------------------------steven james, director of research, linux labs
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On Tue, 20 Jul 2004, Luke Palmer wrote:

> Hi everyone,
>
> My cluster is made up of dual Xeon nodes with 2GB memory.  We formerly
> ran openMosix, which actually worked quite well other than the one hour
> uptimes...  Anyway, we observe that when placing two processes on a
> node, they run about half as fast as they would were a single process
> placed on a node.  If I look at ps or top, both processes stay at 99.9%
> or so, and the load averages stay just shy of 2, but the wall clock
> doesn't lie...
>
> I'm running the most recent clustermatic stuff, so nodes and master have
> 2.4.22-cm36smp kernels over Fedora Core 1.  This didn't used to happen
> with openMosix for the exact same executables.  Any ideas of things to
> look at?
>
> Thanks
> -Luke
>
>
>
>
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