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Subject: Re: Why doesn't everyone .. ( Program for Dual Processing) ???

Author: Uri Blass

Date: 12:00:05 04/03/02

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On April 03, 2002 at 14:26:47, Nolan Denson wrote:

>Just wondering .. when writing a chess program why doesn't everyone program them
>to work in dual processing.  Is it that much more difficult ... Also for some of
>the ones that are single engine now ... can you just simply take some common
>code from a program such as crafty and If so .. what parts of crafty does the
>dual  processing ( lock.h etc etc)?  It seems that many see writing there
>programs for dual processing is a lot of work.

I doubt if it is a good idea to waste time about testing  a program on 2
processors when the advantage of it is clearly less than being twice faster.

Things may be different if there are more than 2 processors and it is possible
to get a speed improvement of being 5 times faster but
I believe that today it is more productive not to work on teaching a program to
use 2 processors and to use the same time to improve the engine.

Uri



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