Author: Mogens Larsen
Date: 09:15:25 08/30/99
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On August 29, 1999 at 21:20:43, Robert Hyatt wrote: >Neither, unfortunately. Here's why. > >Assume one null-move program and one non-null-move program. If you use ponder >mode, both will get 1/2 the machine basically. Which means that in essence, >the programs will be running on machines 1/2 the speed of the computer you are >using. That hurts a null-mover more, because reduced depth allows some critical >null-move failures that deeper depths 'fix'. So there, you get skewed results. > >Now if you use ponder=off, you give each program 100% of the machine while it is >thinking, so you may get fewer null-move failures. But then the lack of >pondering screws up the timing. > >In Crafty, you probably notice the time: surplus: output at the start of >each search? The 'surplus' comes from correctly predicting and saving that >that time, so that it can be used somewhere else when it might be helpful. Thanks for the answer, Robert. If we use the popular racingcar-terminology. There's either an engine problem or a fuel problem :o). Best wishes... Mogens
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