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Subject: Re: 64 bit --and chess of course

Author: Dann Corbit

Date: 11:46:33 12/16/04

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On December 16, 2004 at 03:37:46, Gian-Carlo Pascutto wrote:

>On December 15, 2004 at 22:24:49, Alex  wrote:
>
>>Of course it would be foolish to buy a New computer now......  Micrsoft is going
>>to present a 64 bit OS nest year, the Christmas prices of new computers will
>>drop like a BRICK by Jan 1..........  But ! Let us speculate.... Hmmmmmmmmmm
>>What will 64 bit DO for chesss programs ....Yes yes I KNOW AMD has New processor
>>that does 64 bit..... but what is the difference ..reallY?  D
>
>Speed.
>
>You can expect programs to get 10-60% faster from 64 bit mode.
>
>This is in addition to the Athlon64 already being so fast in 32 bit mode.

Another potential advantage is the large address space.

With terabytes of ram directly addressable, potentially totally new solution
ideas may be formulated.

For instance, you could memory map the 3-4-5 man tablebase files and lose the
disk access penalty.  That might make them give a large Elo boost, while the
disk access method for 32 bit systems seems to be about break even.

You could have 20 GB hash tables.

You could store (in ram) a large tree of every chess game ever played together
with statistical information on each node.



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