Author: Uri Blass
Date: 10:01:55 02/18/02
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On February 18, 2002 at 12:24:43, Robert Hyatt wrote: >On February 18, 2002 at 11:46:12, Aaron Gordon wrote: > >>Actually you can hit 1M nps in Crafty on a regular old AMD Thunderbird at >>1.65GHz. That means you'd need ~330GHz to hit 200mnps. Of course if you were to >>run a system such as this (say, 256 cpu's) in a cluster then you'd lose a heck >>of a lot of NPS. Also lets say we used Myrinet and TTL_Papers and 'total' gained >>a speedup of 128 x one cpu with 256 cpu's. I'm not sure how realistic that >>number is but it 'seems' alright if you consider using an experienced cluster >>designer along with good code. This will of course put you at 128mnps using the >>1.65GHz tbirds. By the time you get something like this built there will be 2GHz >>AMD Thoroughbred cpu's (0.13 micron AthlonXP's). > >Figure speedup = 1 + (N-1)*.7 for reasonable numbers of processors. I >don't know that that will hold for N very large, say 128. > >Also, even if a CPU could run at 330ghz, we need a memory breakthrough or >else it won't be 330 times faster than a 1ghz cpu today. > > > > >> >>If you figure 1 * 2 / 1.65 then that 2GHz XP would put you at 1.21212~Mnps. That >>x 128 = 155.15Mnps. While not as fast as Deep Blue I think most of todays >>programs should outplay Deep Blue with a little tuning (like cutting back on the >>selectivity/pruning a bit). In the case of CT14 & Fritz7 actually running at >>this sort of nps then most definately it will exceed Deep Blue strength. Perhaps >>even around 50-80mnps. > > >There is a _huge_ difference between what Deep Blue "knew" and what the two >programs you mention "know". And knowledge is important against strong >human players... Deeper blue had not enough time to tune their evaluation I do not believe that the evaluation of it was better than the top programs of today. The quality of knowledge is more important then the quantity. I agree that knowledge is important in comp-humans games Kasparov knew nothing about Deep blue. Humans today know a lot about ct14 or F7 because they are commercial and humans can play against them and learn their weaknesses. This knowledge is important in comp-human games. Uri
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