Author: Bob Durrett
Date: 17:10:25 02/17/04
Go up one level in this thread
On February 17, 2004 at 20:04:13, Anson T J wrote: >On February 17, 2004 at 13:01:24, Robert Hyatt wrote: > >>On February 17, 2004 at 12:25:18, Anson T J wrote: >> >>>On February 17, 2004 at 10:30:32, Robert Hyatt wrote: >>> >>>>On February 17, 2004 at 08:41:16, Bob Durrett wrote: >>>> >>>>> >>>>> >>>>>The fact is that Hydra whipped a bunch of conventional chess computers at >>>>>Paderborn. That fact is indisputable. >>>>> >>>>>How??? >>>>> >>>>>How could Hydra, chugging away at the clock rate of a slow snail, win against >>>>>the high-nps conventional machines? >>>> >>>> >>>>I don't understand the question. Hydra probably hit speeds of 15-20M nodes per >>>>second. How is that "a slow snail"??? >>>> >>>>It was the fastest thing playing there by a factor of at least 4x... >>> >>>I think he is talking about the clock speed of the boards. I don't know the >>>clock speed of the boards but I would imagine they are slower than GHz. >> >>Yes, but who cares? It is the NPS that determines how fast a chess program >>searches, and their NPS was above anything else by a big margin. >> >>Would it matter if someone showed up with an Indy car that ran 300mph but with >>an engine that only turned 4,800 RPM? Would that be considered "slow" since the >>rest are hitting 10K+ on their tachs??? > >I understand this, but the orignial poster did not. I'm just trying to explain >what he was thinking. Its not obvious why a "30Hz" card should produce more nps >than a 2GHz cpu. You got that right! The Hydra mystery is especially mysterious because they seem to have produced Hydra for a halfway reasonable amount of money. That is the REAL accomplishment! What could they have accomplished if money were no problem? Bob D. >> >> >>>> >>>> >>>> >>>>> >>>>>They say "nps isn't everything." But could the truth be "nps isn't anything"? >>>>> >>>>>Maybe conventional wisdom ["The Earth is flat"] isn't right after all. >>>>> >>>>>Does anybody understand what happened? I feel that the results were monumental! >>>>> >>>>>Bob D.
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