Author: Robert Hyatt
Date: 20:58:39 05/21/01
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On May 21, 2001 at 23:01:30, Chessfun wrote: >On May 21, 2001 at 13:06:51, Andreas Schwartmann wrote: > >>I received an e-mail today asking me for help on GS 2930 test suite position >>#13. My chess abilities are not good enough, I am afraid, but what do you think >>about this? Here comes the mail: >> >>Andreas, >> >>I have been using the GS 2930 test suite to estimate the rating for the >>Deep Blue system. This is for use in a paper we are preparing. I >>downloaded the test suite from your web site. There are three problems >>that the system does not solve in 20 minutes. One of them in particular, >>#13, is not solved even for very deep searches. The given move is Bxg7, >>but Deep Blue Jr. gives a different move that has a somewhat higher score >>than Bxg7. The PV follows. Do you have any opinion on this? Thank you. >> >>Regards, >> >>Murray >> >>Rh5 Qc2 Qe7 Qb2 Ne5 Rc1 g4 Rf1 Kf1 Qb1 Kg2 Qe4 Kh3 Qb1 Rf5 Qf1 Kh4 Qg2 h3 >>Qa8 Rf7 +1.49 >> >>-- >> >>Any comments? >>Andreas > >I also notice they say three they didn't solve. >I am also curious about the other 2 positions and if anyone >knows the hardware speed as only missing three seems very good. > >Sarah. The last DB Jr I saw had 16 chess processors.. That should turn into a peak of 16*2.2M nodes per second. In reality, I would suspect something like 1/5 of that if you take the original DB numbers... It might be a bit better than that 1/5 since there is only one level of parallelism (one powerPC processor, 16 chess processors) that might make it more efficient. Say 10M nodes per second maybe... Someone once said that DB Jr might have two chess processor boards in it, which would translate to 64 processors, and closer to 25-30M nodes per second maybe.
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