Author: Ian Osgood
Date: 07:05:58 09/20/02
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On September 20, 2002 at 03:53:56, Daniel Clausen wrote: >On September 19, 2002 at 20:45:45, Ian Osgood wrote: > >[snip] > >>6. Experiment with different history tables (I had never heard of indexing by >>piece*destination until recently.) > >Me neither. What is it? > >Sargon Index the history table by moving piece and color ( 12 ) and destination ( 64 ) of the move, instead of the source and destination of the move. This decreases the size from 4K to <1K entries, which is easier on the cache. Surprisingly, this has little effect on move ordering performance. In fact, it improved the node count of my program (better move ordering). Ian
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