Author: Robert Hyatt
Date: 07:54:21 02/07/02
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On February 07, 2002 at 01:49:33, Pham Minh Tri wrote: >On February 06, 2002 at 22:54:07, Robert Hyatt wrote: > >>On February 06, 2002 at 19:32:39, ALI MIRAFZALI wrote: >> >>>On February 06, 2002 at 19:28:21, Frank Nelson wrote: >>> >>>>On February 06, 2002 at 17:48:52, walter irvin wrote: >>>> >>>>>i wonder if a 2ghz pc with the latest crafty beat the cray blitz that won the >>>>>world champoinship ?????????? >>>>> >>>>>my vote is with crafty >>>> >>>>You are forgetting that cray blitz was runned on a supercomputer at many >>>>m.i.p.s. than that which a home pc can acheive. So my bets are with cray blitz! >>>Actually your last Statementis not True.A 2 gig Home PC has more m.i.p.s then >>>the old Supercomputers which ran Cray Blitz. >> >> >>MIPS are irrelevant. A single instruction on the Cray could operate on a long >>series of things, like a chess board. And the first Cray built had at _least_ >>ten times the memory bandwidth of the fastest PC built today. 1983 crays could >>beat todays best PC by a factor of 1000 in moving stuff thru memory... >> >>there is more to it than meets the eye... > >Bob, a curious question: why didn't you continue to develope on supercomputer >hardware? Because of expensiveness? Correct. It was a _real_ pain to make arrangements to use a $60,000,000.00 computer for a chess event. We had to give very precise time limits for each game, and if a round started late, that was tough, as we only had X hours of time for that game. Additionally we could not get enough time to let a program sit on ICC, for example, to give us reasonable testing or debugging. After the last ACM event (I didn't know it would be the last at the time) Bert and I decided that it was time to move on and use something besides a super computer, which was obviously a reasonable decision since I can get all the time I want on the quad in my office... >I think we might have some exciting events before Deep blue :) CB would _never_ have approached their speed. The best we have seen on a Cray was 5-7M nodes per second. I have seen that same speed on a large alpha SMP box a while back of course. But going beyond that would be a tough assignment. Hard to compete with special-purpose hardware using a general- purpose platform.
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