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Subject: Re: How many Ghz before we can get average 20ply per move?

Author: Lar Mader

Date: 12:44:55 06/08/03

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On June 07, 2003 at 22:45:40, Robert Hyatt wrote:

>On June 07, 2003 at 11:54:30, emerson tan wrote:
>
>>How many Ghz before we can get average 20ply per move on a tournament time
>>control. I always want a computer that can see 10 moves ahead
>
>
>Lets take Crafty as a case in point, since I know what it can do.  On a
>3ghz machine, at 3 minutes a move, it will search 12-14 plies in the
>middlegame depending on checks and so forth.  Let's take 13 as an average.
>
>To do 14, requires 3x faster hardware.  you want to go 7 plies deeper, which
>means 3^7 times faster = roughly 6.7 terahertz.  or about 2000 times faster
>than the fastest machine today.  If you figure on doubling every 18 months,
>assuming Moore's law doesn't "run dry" then log2(2187) = roughly 10.  Which
>means you need to double the 3.0ghz today about 10 times.  Figure 15 years
>with luck.

How about if we factor in throwing multiple cpus at it. What kind of Ghz would
be needed for quad or 8 processor machines.  What is the average speedup per
additional cpu?

-= Lar



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