Author: Joachim Rang
Date: 10:55:57 12/06/03
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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? Did you run also some matches on longer time controls? regards Joachim
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