Author: Andreas Herrmann
Date: 08:40:54 06/19/04
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On June 19, 2004 at 05:56:46, Robert Allgeuer wrote: > >I am currently running a small test tournement with Fruit 1.5 against various >engines. Arena reports for Fruit consistently a comparatively low hash hit rate >of 5-7%. Certainly my time control for this test is very short (2m+1, Athlon >XP2400+), but other engines report under the same conditions significantly >higher hit percentages (Patzer 85%, Ruffian around 50%, Anmon 40-50% etc.). >Any ideas why? > >Thanks >Robert At first you can't compare the values, because AFAIK there is no definition inside the UCI protocol, what to output there. So only the author of an engine knows, what he sends there to the GUI. The engines are using different kinds of hash table implementations, some are using only one hash table, but most are using different hash tables intern. So what value from which hash table should be send to the GUI? And most engines don't clear the hash tables after each move, so the fill rate should increase during the game. The best is, you ignore these hash filled values, or you ask the author of a special engine, what he sends there to the GUI. Andreas
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