"andrew holway" <[EMAIL PROTECTED]> wrote: > > I am looking at chips for a small 20 node cluster for computational > chemistry. I'm trying to get my head around the various merits of the > different ways the cache work. > > Considering the fairly chunky bits of data that are going to be going > through, does anyone have any opinion on how the new 1.9 Barcelona > will perform against a 2.66 woodcrest. Is the Intel front side bus > going to be a significant bottleneck for this type of application?
Andrew, You should be comparing Barcelona to Harpertown, and focused on what things will look like in Q4 when Harpertown (45nm) will be out and Barcelona "will" be available at higher clock. Barcelona is still the bandwidth and latency leader, and compares close to equal on power with the Harpertown at 45nm. Codes that favor larger caches will like Harpertown. If the Barcelona makes it to 2.6 or 2.8 GHz by the end of the year, then it will compete. It will win with even at lower clocks on very bandwidth intensive apps. Regards, rbw -- "Making predictions is hard, especially about the future." Niels Bohr -- Richard Walsh Thrashing River Consulting-- 5605 Alameda St. Shoreview, MN 55126
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