[Beowulf] Re: Intel quad core nodes?
jpenney at advancedclustering.com
Thu Oct 11 11:16:30 EDT 2007
I recently ran a customer's weather modeling code on a variety of machines. This program is very sensitive to memory. The following are the run times while running 4 processes. Please note that the Xeon, Opteron and Barcelona numbers are from dual socket machines.
Core 2 Quad 2.4 GHz - 3h16m
Xeon Quad 2.0 GHz - 2h51m
Barcelona 2.0 GHz - 1h40m
Opteron 2220SE 2.8 GHz - 2h24m
At 8 processes:
Xeon Quad 2.0 GHz - 2h52m
Barcelona 2.0 GHz - 1h22m
Barnet Wagman wrote:
> I'm moving towards setting up a small cluster (my first), and am
> thinking about using Intel quad core processors. However, I'm a little
> concerned about memory contention. I'm (tentatively) going to have one
> processor per node (this appears to be the cheapest way to go), but I
> still wonder whether four cores will choke Intel's memory architecture.
> (AMD's Barcelona may be better in this regard, but it doesn't seem to be
> available yet, at least not through retail channels).
> I'd like to hear any opinions on this issue. And if you've used quad
> core processors, I'd certainly like to hear about your experiences
> (including which processor you've used).
email: jpenney at advancedclustering.com
phone: 913.643.0300 option 2
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