[Beowulf] What services do you run on your cluster nodes?
hbugge at platform.com
Tue Sep 23 04:05:11 EDT 2008
At 02:54 23.09.2008, Perry E. Metzger wrote:
>By the way, if you really can't afford for things to "go away" for
>1/250th of a second very often, I have horrible news for you: NO
>COMPUTER WILL WORK FOR YOU.
Obviously a statement from someone not on the top
of the subject. Here, a statement from someone
who is. Snip from
"Jones et al.  found that with only 0.31%
daemon and OS activity on each CPU of a dedicated
4096 processor IBM SP system, MPI_Allreduce operation degraded more than 400%"
So Perry, some reading may be? Let me suggest
The Case of the Missing Supercomputer
Performance: Achieving Optimal Performance on the
8,192 Processors of ASCI Q, in ACM/IEEE
Conference on Supercomputing (SC03), (Phoenix, Arizona, USA), Nov. 2003.
Then, you can comment on your own statement above written using caps locks ;-)
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