Author: Vincent Diepeveen
Date: 13:37:22 08/10/01
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On August 10, 2001 at 14:37:50, Les Fernandez wrote: >On August 10, 2001 at 12:47:01, Shep wrote: > >>On August 10, 2001 at 08:03:37, Les Fernandez wrote: >>>Strictly from a speed point of view the above computer is approxiamtely 50,000 >>>times faster then the hardware that was used in the Deeper Blue hardware! >> >>Sorry Les, but this is utterly wrong. >> >>Deeper Blue had a speed of 200 - 1,000 million _nodes_per_second_ in chess. >>This is something completely different from saying it had 0.2 - 1 billion >>instructions per second. >> >>Your calculation would be right if "node" == "instruction", but no computer (not >>even a highly specialized one as DB) can examine one node in one instruction. >> >>--- >>Shep > >Yes Shep you are correct, my statement would only be true if node=intruction. >While we are on the subject how many instructions was Deeper Blue's hardware >able to do? Just curious. > >Thx > >Les Oh well see it as this: if you equip all those SP processors with hardware deep blue processors it would be of course #processors SP / 32 times faster. so for 3200 at once usuable processors it would be for nodes a second faster: 3200 / 32 = 100 times. However that's in nodes a second. Not in practical speedup. With a branching factor of 10.0 or something which DB had, that would be 2 ply extra or so.
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