Author: Robert Hyatt
Date: 09:49:51 06/29/04
Go up one level in this thread
On June 29, 2004 at 12:11:57, Uri Blass wrote: >On June 29, 2004 at 11:56:05, Robert Hyatt wrote: > >>On June 29, 2004 at 11:25:08, Jaime Benito de Valle Ruiz wrote: >> >>>On June 29, 2004 at 08:26:15, Zach Wegner wrote: >>> >>>>One important point is that crafty uses bitboards, so it will have an additional >>>>speedup on a 64 bit processor. >>> >>>I might be wrong, but I think that Fritz also uses bitboards (I don't know about >>>Shredder). >>>Anyway, what about the compiler? And what extra efficiency do you expect from a >>>64-bit processor? Enough to outsearch all other engines running on similar >>>processors? >>> >>>Jaime >> >> >>AMD has tested Crafty to answer this question. They compiled it for 32 bits, >>and for 64 bits. The 64 bit version runs 47% faster than the 32 bit version, >>everything else remaining constant. >> >>Fritz does not use bitboards by the way... > >You may be right but how do you know that the version that is going to play in >WCCC does not use bitboard? > >Uri I only pay attention to what the actual authors say. Frans has said he does not use bitboards. I doubt that has changed recently. It takes time.
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