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Subject: Re: What is the best Hash Size for 30 min and 45 min games?

Author: Dann Corbit

Date: 14:48:34 09/30/02

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On September 30, 2002 at 16:31:29, Jorge wrote:

>On September 30, 2002 at 15:39:40, Dann Corbit wrote:
>
>>It depends on your CPU and the programs.
>>In short, there is no simple answer.
>
>How does Hash size correlate to CPU in general?

CPU and memory bandwidth are both important.

The numbers that are important is how long does it take you both to clear and
also to fill the hash table.

If you are playing G/1 minute and allocate 512 MB hash most of the time for a
move may be spent clearing the hash table.

If you are playing at correspondence chess rate, then the hash table will fill
up no matter how large you make it.

Running test suites on the machine with the chosen programs at time controls
that approximate those to be used playing may help to determine a good setting.



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