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). -- justin penney email: [EMAIL PROTECTED] phone: 913.643.0300 option 2 im: http://livehelp.advancedclustering.com/ _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
