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Subject: Re: Hash Size

Author: Robert Hyatt

Date: 11:42:12 10/09/02

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On October 09, 2002 at 08:46:24, Gian-Carlo Pascutto wrote:

>On October 09, 2002 at 08:25:29, Shaun Brewer wrote:
>
>>On October 09, 2002 at 02:17:25, Tim Blankenship wrote:
>>
>>>with 512 mb of ram playing 3+2 minute games...whats the best hash size ive tried
>>>a lot and am still confused...thx for help
>>
>>Test I have run with crafty seem to indicate that the more the better even for
>>blitz as long as you stay within real memory.
>
>Actually, your test indicates that it doesn't make any difference in
>blitz, as largest rating - error margin < smallest rating :)
>
>In the fastest lightning games, a too large hash for Crafty is not good.
>In any timecontrol other than that, larger is generally better.


Why do you think that is true?  I don't make a pass over the hash table after
each
search to clear anything.  I _might_ clear the scores only twice during the
game, but
no more, normally...


>
>It also depends on the program. Sjeng and ChessTiger for example play
>even the quickest timecontrols OK even with huge hash values.
>
>--
>GCP



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