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Subject: Re: Hiarcs Hash Table Info Is Here

Author: Brett Clark

Date: 21:47:17 07/05/99

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On July 05, 1999 at 21:13:47, Melvin S. Schwartz wrote:

>
>Today I have received e-mail from Mark Uniacke answering my question about hash
>tables for Hiarcs 7.32. I would like to thank Mr. Uniacke for providing the
>following information in regards to the hash table question:
>
>"Please give it as much hash tables as possible. Although Hiarcs is slower than
>the fast searchers it maintains hash table information continually (with a
>suitable replacement strategy of course) so please give it as much as you can.
>In game play this makes a difference. In individual test positions the advantage
>is less."
>
>I hope this information is of value to others who have wondered about the
>question of hash tables.
>
>Regards,
>Mel

Mr. President,

Thanks for all of the work that you've done on the Hiarcs hash tables.  I think
that Mr. Uniacke's statement needs to be qualified, because if you're playing a
5 min. blitz game with Hiarcs, I don't think that it is going to perform at
optimum strength if you give it 64 MB of hash tables.  There has got to be a
correlation between the nodes per second, the average time per move, and the
hash table size.  The longer the time control, the bigger the hash tables.
Hiarcs fills the hash tables at about 1/10 the rate of Fritz, so I still don't
see the point in giving Hiarcs huge hash tables.

Best regards,
Brett



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