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Subject: Re: ultimate chess computer???

Author: Robert Hyatt

Date: 07:36:08 12/10/00

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On December 09, 2000 at 23:48:39, Joshua Lee wrote:

>>
>>With the right kind of programming, the T932 will simply blow the doors (and
>>the paint) off of any of those machines.  Remember the simple math:
>>
>>each cpu can read 32 bytes per clock cycle, and write 16 bytes per clock
>>cycle.  That is 48 bytes, times 32 cpus, at a clock rate of 500mhz.  I
>>think that _any_ machine will choke when presented with that kind of data
>>throughput requirement.  :)
>
>so 48x32 1536   x 500Million   if this is right that's
>76.8 Trillion bytes i know from memory that the athlon bus at 266mhz is
>1.6Gbytes per second bandwidth so  (with ddr chipset ofcourse and probably a
>1.2Ghz cpu......)
>
>
>480 times as much if i am wrong in comparing it this way   .... my 800mhz athlon
>found a win in a cray blitz game (not on this T932 beast) and took 1hour
>13minutes and 37 seconds 1,951,276,000nodes  it would find this 480 times
>faster???? 9.2 seconds it doesn't sound right but then again it is a cray.....


In the game in question, CB found the right move quickly.  But a timing problem
let a worse move overwrite the correct move in very rare and hard to reproduce
circumstances.

The Cray is _very_ fast...  yes...

Of course, you have to remember that the machine used in that 1987 game is
far slower than the T932 of today...  and I am sure that I can put together
a machine today that would be faster than the Cray of 1986 when applied to
playing chess.  ie an 8-way 700mhz machine would probably be faster than
that machine.



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