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Subject: Re: Fritz7 beats DeepFritz7 at 5/12 5.0-3.0 with 192 Hash vs 32 MB Hash ??

Author: Uri Blass

Date: 02:49:32 10/21/02

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On October 21, 2002 at 05:36:23, Brian Katz wrote:

>  Here is an interesting experiment involving Hash Table settings.
>This was run on a single processor 350MHz Pent II 384 SDRAM with Nalimov 4 disc
>Endgame Turbo plus additional downloaded 5 piece endgames and Permanent Brain
>turned off.
>
>  For my computer's speed the proper HASH TABLE settings for game 5/12 should be
>16 MB. I have found that 32MB has always worked well, however.
>As an experiment, since I believe Fritz 7 performs better than Deep-Fritz 7 when
>using a single processor (even though Chessbase boasts otherwise, stating that
>DF7 is stronger even when usning a single processor).
>  I raised the Hash Table settings for Fritz 7 to 192 MB as opposed to
>Deep-Fritz 7 set at 32 MB Hash.
>  Surely, 192 should be much too high for such a time control with my processor
>speed. Well, Fritz 7 still beat out Deep-Fritz 7 by 5.0-3.0

5-3 is not a significant result and I also think that the effect of hash is
very small here and I doubt if 32 is better than 128 for Fritz.

Another point:
I think that it may be interesting to compare nodes per second of Fritz7 and
Deep Fritz7 on your processor and on the ssdf processors that are faster.

It is possible that when chessbase said that Deep Fritz7 is better on single
processor they thought only about the fast processors and it is possible that
Deep Fritz7 was simply not oprimized for the slow processors.

Uri



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