Author: Anthony Cozzie
Date: 09:18:20 01/16/05
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On January 16, 2005 at 12:16:53, Anthony Cozzie wrote: >Please find the error in one or more of these statements Chandler: > >1. A tablebase access takes at least 2-3 ms, even on a 15K SCSI hard drve. > >2. Most engines (except for Diep ;) have evaluations that take a few >microseconds or so. > >3. Therefore a tablebase access is on the order of 1000X slower than calling the >evaluation function. > >4. Since most of the time is spent in the evaluation function, this means if the >programmer called tablebase_probe() at every node it would run 1000X slower, >that is 1K nps instead of 1M nps in Zappa's case. > >Note that we are talking about positions with (say) 8 pieces on the board; for >example this KRPPPvKRP position. White wants to keep his passers together and >win, Black hopes to split them and (possibly) draw. > >[D]8/8/r6k/6p1/6P1/5P1P/R6K/8 w - - 0 1 > >When a lot of people (experts especially) think something, it is usually good to >at least consider their position. They might be wrong anyway, but they probably >have at least some justification for their opinion. I get the feeling that you >never read anything I write, but I keep trying for the sake of world (or at >least forum) peace anyway :) > >anthony OK, I suck at creating FENs by hand :) but you get the point. anthony
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