Author: Aaron Gordon
Date: 19:59:30 03/17/03
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On March 17, 2003 at 18:47:27, Eugene Nalimov wrote: >I just run the experiment. I used 2 otherwise identical 64-bit systems, one with >3Mb of L3 cache, other with 1.5Mb. Machine with bigger cache run Crafty's >"bench" comman 12% faster (1 CPU). > >That means that >(1) Crafty's working set don't fit into 1.5Mb, >(2) For systems with cache 1.5Mb or less (i.e. for almost all x86 systems) for >Crafty memory speed matter. > >Thanks, >Eugene Those types of systems aren't what people normally use. Most people here have a Pentium 3, Athlon, Pentium 4, etc. Here is something I found with Crafty. Using the Nforce2 chipset I'm able to run the ram at speeds from 50% up to 200% (100% being synchronous) of the fsb speed. I tested 200MHz FSB (400DDR) with 200MHz memory (400DDR) and 200fsb with 100MHz memory (200DDR). The difference between ~1.6gb/s memory and ~3.2gb/s memory with craftys 'bench' command was 0.14%. Yes, about one seventh of one percent.
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