Author: Mike Byrne
Date: 13:17:38 12/26/03
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On December 26, 2003 at 15:34:43, Darren Rushton wrote: >>Actually what happens, is the 366 is SLOW. And I mean SLOW. > >I don't intend to be controversial here, but the conclusion I draw from your >results is that Shredder 7 is such a brilliant program it is almost a match for >the one of the better amateur programs on hardware that's almost 10 times >slower. > >Regards, > >Darren It's not controversial and it's not new. In fact, these results could have been predicted. Anytime you have a rating difference of around 200 points (SSDF Shredder 2812, Crafty 2615) running on the same hardware, you would expect fair match would be on a somewhere where the weaker engine need a 8x to 10x speedup. It is often believed that a doubling of speed increase strength of around 50 elo points (some feel more, others less) especially in computer vs computer play. 200 point rating differential would indicate: 2^3=8 50x2x2=200 points therefore one would assume that it would require ~approx 8x machine would for the weaker engine to catch up... SSDF Rating + - Games Won Av.opp 1 Shredder 7.04 UCI 256MB Athlon 1200 MHz 2812 28 -26 781 75% 2623 30 Crafty 18.12/CB 256MB Athlon 1200 MHz 2615 27 -27 647 52% 2604 In my view, Shredder 7.0.4 is the stongest engine available and I have seen nothing to indicate that it should change. Shredder would fair just as well or better against most other amatuer engines as well under the same conditions.
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