Author: Heinz van Kempen
Date: 16:04:55 02/12/06
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On February 12, 2006 at 17:20:31, Ray Banks wrote: >On February 12, 2006 at 15:23:50, Alessandro Scotti wrote: > >>Hi, >>is there a table somewhere that shows how much Elo can an engine get from being >>10%, 20%, ... 100+% faster? >>Usually speed improvements are considered marginal to "algorithmic" >>improvements, but on CEGT the difference between Deep Shredder 9.12 x64 2CPU and >>Shredder 9 is 65 elo, and between Rybka 64-bit and Rybka 32-bit an amazing 62 >>elo... in the latter case not bad at all for just recompiling the program! >>I'd rather have my program slow and correct than fast and buggy, but I'm still >>wondering if it's still worth to invest some effort in optimizing things a >>little. > >http://kd.lab.nig.ac.jp/chess/CCRL-4040/rating-table-all.shtml > >We currently have a difference of 42 ELO Rybka 64 bit vs 32 bit. Our time >control is more than twice as long as CEGT though, and that could have an >impact. Plus our volume of games is fairly low so the statistical error is >somewhat higher unfortunately :-( > >We are also testing Naum in both 32 bit and 64 bit versions, so that will also >give more information. But that will take 2-3 weeks probably Hi, the explanation of differences is more likely to be explained from too few games, than from giving more time. Even compared with Blitz we have very few differences for engines. Going to longer time controls mainly has the effect to be unable to test a lot of engines and versions, especially more amateurs. So CEGT will resist to do that except from tournament time control games not used for statistics but for investigation of opening systems and for giving some high quality games. As we have totally different concepts and because of the history all this has had I would suggest to avoid any comparison between our groups, at least from CCRL people. We did not do this from our side and it would be fair that you also avoid it. Thanks for listening. Heinz
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