Author: Albert Silver
Date: 08:48:25 07/26/00
Go up one level in this thread
On July 26, 2000 at 01:35:40, Ed Schröder wrote:
>On July 25, 2000 at 19:45:11, Dave Gomboc wrote:
>
>>On July 25, 2000 at 17:29:34, Ed Schröder wrote:
>>
>>>On July 25, 2000 at 16:54:39, Alvaro Polo wrote:
>>
>>>>I worked for IBM as a scientist at the IBM Scientific Center in Madrid. I would
>>>>very much more trust Hsu's number than "official IBM" numbers. PR's and
>>>>marketers at IBM are not stupid people (my father was a country general manager
>>>>there), they are on the contrary very intelligent, but they don't care that much
>>>>about scientific exactness in documents directed to the general public. They
>>>>probably wouldn't understand very well, for example, why the difference between
>>>>256 and 480 processors is significant.
>>>>
>>>>Alvaro
>>>
>>>With all respect to your opinion I believe that P/R people very well
>>>understand the value of numbers. If they don't they would do a very
>>>poor job which I find hard to believe.
>>>
>>>Ed
>>
>>That was quite a statement from Alvaro. :)
>>
>>In any case, DB2 had 480 chess processors, not 256.
>>
>>Dave
>
>Sigh. From the IBM pages again:
>
> "The latest iteration of the Deep Blue computer is a 32-node
> IBM RS/6000 SP high-performance computer, which
> utilizes the new Power Two Super Chip processors
> (P2SC). Each node of the SP employs a single
> microchannel card containing 8 dedicated VLSI chess
> processors, for a total of 256 processors working in
> tandem. The net result is a scalable, highly parallel system
> capable of calculating 60 billion moves within three minutes,
> which is the time allotted to each player's move in classical
> chess."
>
>It says 256 processors. The URL:
>
>http://www.research.ibm.com/deepblue/meet/html/d.3.2.html
>
>Then look at the logo, it says the re-match. So 256 processors.
>
>Ed
Well, according to the horse's mouth, these are the very first lines (including
the title) of his article published in IEEE/1999:
"IBM’S DEEP BLUE CHESS
GRANDMASTER CHIPS
THE IBM DEEP BLUE SUPERCOMPUTER THAT DEFEATED WORLD CHESS
CHAMPION GARRY KASPAROV IN 1997 EMPLOYED 480 CUSTOM CHESS CHIPS.
THIS ARTICLE DESCRIBES THE DESIGN PHILOSOPHY, GENERAL ARCHITECTURE,
AND PERFORMANCE OF THE CHESS CHIPS, WHICH PROVIDED MOST OF DEEP
BLUE’S COMPUTATIONAL POWER."
Albert Silver
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