Author: Matthias Gemuh
Date: 11:08:09 04/20/04
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On April 20, 2004 at 11:24:58, Bernardo Wesler wrote: >what do u mean by that? >I could guess that it depends if it is fritz 8, junior, or whatever engine.... >if so, which are the desirable and optim hash size sizes for fritz 8, DF8, H9, >and so? I mean, you say that there is a "the best" hash table size for each >engine, different one from another? >Thx in advance For these commercial engines, we can arrive at conclusions only through trial and error, except their authors/programmers speak out. The way each programmer uses hash memory is very different. The 2 GB I mentioned apply only to the engine I have written (BigLion). This huge hash is optimal for BigLion because : 1) I don't clear the hash between search iterations and game moves 2) I store complete 64 bit hash key for validation 3) I hash many things: search positions, main eval, pawn eval, etc. /Matthias.
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