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Subject: Re: Which engines support 64 bit node counter?

Author: Bo Persson

Date: 13:48:47 05/18/03

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On May 18, 2003 at 16:41:54, Ulrich Tuerke wrote:


>
>This reminds me on something which I had heard about the DarkThought-project
>(Ernst A. Heinz, Markus Gille, (Peter W. Gillgasch)).
>At the beginning of a tournament game, they had used to repeatedly start their
>engine, measuring performance until they were satisfied.
>Obviously, the way of loading the engine into memory can have some effect on
>performance on some platforms. This had been under Digital Unix.
>

Yes, I have seen this too under Windows. It is probably a cache effect.

The program is loaded into virtual memory, but the cache works for physical
memory addresses. A different mapping might work better for a particular
program.

>Uli
>
>>


Bo Persson
bop2@telia.com




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