Author: Wylie Garvin
Date: 13:16:23 12/12/01
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On December 12, 2001 at 15:41:02, john rice wrote: >Hello, >Since larger hashtables increase playing strength, isn't it safe to assume >increasing the tablebase cache would do the same? With 512m of ram available, I >usually set the hashtable size of Fritz 7 to 128 or 256m, yet the default >tablebase cache is only 2m. With all 3,4,5 and some 6 piece endgame tablebases >it would seem 2m of cache would be a huge slowdown/bottleneck during the >endgame. Any thoughts? >Thanks, >JR Oh yeah--any node in the database does not need to be searched in the normal fashion; all database positions are leaves. If the program *could* hit the database at all depths, then the pathological point would occur in the endgame phase somewhere where a large fraction of leaves were database positions. But the situation would get better with each move played, because (a) the tree would tend to get smaller after a while, and (b) lots of the needed positions would be left over in the cache. I am totally guessing here, but a size of 2mb suggests to me that Fritz7 only goes into the database up to some number of plies (6? 8?). wylie
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