Author: Dann Corbit
Date: 19:45:43 06/30/04
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On June 30, 2004 at 15:14:54, Robert Hyatt wrote: >On June 30, 2004 at 14:36:21, Dann Corbit wrote: > >>On June 30, 2004 at 14:19:02, Andrew Wagner wrote: >> >>>I have a single transposition table, replace-always. I count a success when I >>>get back a score which allows me to return immediately, without making a move. >>>About what percent should my success rate be? >> >>about 1/3 (33%) seems usual, especially for long searches. Sparse boards seem >>to do the best for some reason. >> >>>Currently, my success rate starts around 5%, then drops turn-by-turn, until it's >>>0, then jumps back up and starts falling again. Any suggestions what might be >>>causing this? I've tested all my keys with generating them from scratch, and >>>have no problems there. My code is modelled after the TT code on bruce morelan's >>>site. Any suggestions appreciated.... >> >>Your hashing has a bug for sure. >> >>Here are some Beowulf ratios of probes/hits (from the IQ3 test suite): > >I would assume these are "signature match" hits, not entries that terminate the >search instantly, as he was talking about. There is a big difference. Crafty >runs around 30% hits in middlegame when you count signature matches. Far less >when you only count "useful entries"... The hash has been found, but not qualified for usefulness yet.
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