Author: Thomas Mayer
Date: 19:27:27 08/24/04
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Hi Jorge, >>> Would anyone wish to guess the cost of the Hydra hardware? >> well, I think it is nearly as expensive as some think. You know, it's a >> cluster of 8 Dual machines. Okay, they nead 16 FCPGA cards which cost when >> I remember correctly around 1500$... But for sure it is way cheaper then >> what IBM has done with Deep Blue. >I believe that Hydra was only only two FCPGA cards. According to this picture. per machine, Jorge... Which is 8 Dual x 2 FPGA cards = 16 FPGA cards... When you look at the picture: http://www.chessbase.com/images2/2004/abudhabi058.jpg you can see that each box has two cards in it... one per processor... >>It is even possible that the Shredder machine is more expensive. At least an >>8-way Opteron would cost more, I think... > You are definitively correct and I don't think that Hydra is even twice > faster than Shredder is on the Quad Opteron that it was running. If you look > at the search depth that both were reaching, but shredder has always been > slower than Deep Fritz, therefore, search depth is not a mean to measure > shredder either. well, when you compare search depth nowadays then you will see that Shredder shows way more depth then Deep Fritz does. Stefan must have discovered a nice trick there... :) So when Hydra can reach the same depth it must be quite a lot faster because it's search is not nearly as narrow then the one of Shredder. Chrilly can't use so much cutoff technics in the hardware itself and has no hash in the hardware. Greets, Thomas
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