Author: Vincent Diepeveen
Date: 14:50:09 12/08/99
Go up one level in this thread
On December 07, 1999 at 23:11:42, Robert Hyatt wrote: >On December 07, 1999 at 21:51:17, Vincent Diepeveen wrote: > >>On December 06, 1999 at 13:55:54, James T. Walker wrote: >> >>>On December 06, 1999 at 13:00:56, Georg v. Zimmermann wrote: >>> >>>>>A thousand fold increase would be >>>>>what, an additional 6 ply search in the same time? >>>> >>>>Lets do some math. 40^x = 1000, 40log 1000 = x, x = 10log1000 / 10log40, x = >>>>3/10log40 = 3 / 1.5 = 1.9 >>>> >>>>I think it gets you "1.9 ply" deeper if you do brute force. Now we need someone >>>>to tell us how much that is if you add HT and other modern wunder drugs. >>>>But I would be very very suprised if you'd reach +6ply. >>> >>> >>>It is also reported to be 2 million times faster than todays PC's! >>>Jim Walker >> >>sounds a bit hard to believe unless it eats also a 2 million times higher >>power bill. > >Do you have _any_ clue what kind of power a super-computer sucks down? IE >crays start at 500KVA power supplies... That is volts * amps, with the >usual power supply taking in 480 volts. so 480 volts at a total of 1000 >amps. That is 500 killowatts of power, vs 50 for the typical PC. The >machine IBM is going to build would probably need 1000X that much power. > >So a million times more power would barely get it powered up... Rainer already told a cool story about their cray... ...and the water cool central for it... Not that electricity numbers say much to me, but 5000 lamps of 100 watt that's a lot... that's only 30$ an hour though, where prices of crays are measured in thousands of dollars an hour...
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