Author: Tom Kerrigan
Date: 12:16:08 10/24/01
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On October 24, 2001 at 12:13:17, Dan Andersson wrote: >Either go to the SPEC.org or to: >http://www.aceshardware.com/ >One interesting observation made in the discussion is that the SPECfp numbers >are limited not by FPU but other factors. Why the heck do they call it SPECfp >then? Bizarre edge in crafty benchmark +40% by XP. SPECfp is very sensitive to main memory bandwidth, and the P4 has more of that. This may or may not be a bad thing; most scientific FP programs are also sensitive to bandwidth. Anyway, for chess, you only really care about SPECint. I'm guessing Crafty is extra slow on the P4 because it's full of unpredictable branches (doing bitboards on a 32-bit chip...). I'm also guessing that small footprint, non-bitboard chess programs compiled using newer compilers would run great on the P4. -Tom
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