Author: Peter Berger
Date: 00:45:46 07/15/04
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On July 14, 2004 at 22:19:12, Robert Hyatt wrote: >>I say "at least 4x", because each of those Opteron processors was faster than my >>2.0GHz AMD 64. In fact I think it was quite more than 4x... > >Bad math. Here is the correct math. > >I had 4 X 2.4ghz. You had 1 X 2.0ghz. > >My SMP speedup is about 3.1X. that gives me 3.1 * 2.4ghz effective speed. IE >7.44ghz. I also lose another 10% overall as that machine did not have all the >working NUMA kernel stuff, so that drops to about 6.7ghz effective speed. > >The difference was really about 3.3x at best... > >Those with numbers that anyone can verify. There is some additional speedup (at least for Crafty, for Falcon I have no idea) from running in 64bit mode. Falcon's computer was running Windows XP. For Crafty the speedup would have indeed been about 4 .
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