Author: Alex Szabo
Date: 14:24:14 12/06/03
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On December 06, 2003 at 13:55:57, Joachim Rang wrote: >On December 06, 2003 at 12:31:41, Alex Szabo wrote: > >>On December 06, 2003 at 11:22:15, Alex Szabo wrote: >> >>>My self-play experiment between crafty versions 19.6 and 17.14 resulted in the >>>19.6 version being stronger by 11 (plus or minus 2) rating points. >>> >>>The experiment was for 20,000 games at a 20+1 time control. It was run on a >>>2x2GHz pentium4 linux system with xboard 4.2.6. I can include other details if >>>there is interest. >> >>Here are some more details: >>(1) 4 matches were run at the same time >>(2) pondering was on (ie normally 8 craftys were competing for CPU time) >>(3) hyperthreading was disabled (FYI, when enabled there are 4 processors and >>5-10% better nodes/sec on this type of computation) >>(4) use of 3 & 4 piece tablebases was enabled and cache set to 32M >>(5) learning was disabled >>(6) there was no opening book; games started from 10,000 different opening >>positions compiled from a database of grandmaster games >>(7) each unique starting position was played twice with players reversed >>(8) all other crafty settings were default >>(9) used 17.14 compiled with icc (-O3 -march=pentium4) which gets 849,011 n/s on >>bench command >>(10) used 19.6 compiled with icc (-O3 -march=pentium4) which gets 796,900 n/s on >>bench command > > >wow this is Hyper-Lightning :-)! > >What was the final score? 19.6 wins 7,003 games; 6,616 draws; 17.14 wins 6,373 games; and 8 games not played for various reasons. > >Did you run also some matches on longer time controls? Yes, but not with 19.6. > >regards Joachim
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