Author: Roy Eassa
Date: 12:20:02 12/07/00
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But what impact, if any, does floating point have on such chess apps as Crafty, Chess Tiger, Fritz, Junior, Hiarcs, Shredder, et. al.? (E.g., which would help them more: a 50% boost in integer speed only, or a 200% boost in floating speed only?) On December 07, 2000 at 15:11:55, Robert Hyatt wrote: >On December 07, 2000 at 14:53:11, Roy Eassa wrote: > >>5+ years ago, in another chess computer forum, I recall posting that computer >>chess makes essentially no use of floating point arithmetic. I.e., the >>performance of the CPU's integer arithmetic was overwhelmingly more important to >>its performance running chess software than its floating point performance. >> >>Is that correct in today's top programs? Was I even correct back then? > > >back then it depended on the architecture. IE Cray was no slouch at FP >arithmetic, and in many cases FP was a fast or faster than int math. In >today's PC, FP is slower, but with the multiple-pipe superscalar approach, >some FP could be beneficial as those operations could be done in parallel >with int operations.
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