Author: Russell Reagan
Date: 10:47:17 12/04/03
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On December 04, 2003 at 07:45:58, Sune Fischer wrote: >That huge speedup Sjeng gets, assuming Sjeng isn't largely bitboard based, >indicates that other factors may be equally important. Who knows what he is doing. I keep asking him and he says vague things that make me think two different things. I can't imagine that he gets a 70% speed increase while Crafty only gets a 60% boost if Sjeng is not bitboard based. He says, "Sjeng can take advantage of 64-bit hardware, and, "Crafty is the classic bitboard program, so what do you think?" That makes me think it's bitboard based. But then he goes and says something like, "What I think about bitboards isn't a secret," and what I remember is him arguing about why other approaches are better than bitboards quite a bit in the past. Dann Corbit also said something that made me think he saw Sjeng code that was bitboard based at some point. But who knows. I personally don't get it. He posts benchmark numbers, but doesn't just state information that is VERY relevant to the interpretation of those numbers. As it is, we can only guess, and that makes his numbers kind of meaningless. Anyway, I am looking into buying one at some point, so I can just write my own bitboard and array based programs and see how they fair.
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