Author: Robert Hyatt
Date: 13:07:18 05/24/99
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On May 24, 1999 at 14:53:56, Dann Corbit wrote: >On May 24, 1999 at 14:38:03, José de Jesús García Ruvalcaba wrote: > >>On May 24, 1999 at 14:31:30, Dann Corbit wrote: >> >>>On May 24, 1999 at 07:12:24, O. Veli wrote: >>> >>>> Is there a commercial program for Linux? I remember a post here stating that >>>>Shredder 3 runs under Linux but have never seen it advertised as such. Are there >>>>any master level programs for Linux other than the Crafty? >>>> >>>>Gens una sumus, >>>On a multiple CPU machine, crafty is probably the fastest chess program on >>>Linux. In fact, Dr. Hyatt's multiple CPU machine is running Linux (IIRC) and it >>>seems to be a world-beater as far as ratings goes. >>> >>>Since it is already multi-cpu aware, it can harness horsepower that other >>>programs can't. Can you imagine Crafty on a Cray/Silcon Graphics T3E fully >>>configured? It might possibly be the second strongest chess engine on the >>>planet, after Deep Blue. >> >> Does the T3E support SMP? If so, then I am almost sure that crafty on that >>machine is stronger than any generally available chess engine. If not, then you >>can get a Sun Enterprise 10000, which I am sure supports SMP. >Fastest machines in the world list: >http://www.top500.org/top500.list.html >Mostly SGI at the top. Since they have many hundreds of processors, they had >darn well *better* be able to do SMP or they are really in trouble. >;-) Unfortunately, they aren't. :) SMP = symmetric multiprocessing, which implies shared memory. The Cray/SGI T3X (T3d/T3e/etc family) uses good cpus, but is based on message-passing. It is practically impossible to do real shared memory with hundreds of processors. It has been tried, but the access time suffers terribly (the Kendal-Square machine comes to mind if I spelled it correctly). So the T3e isn't so attractive at present, but rest assured, there will be a 'message-passing' crafty running one day, for clusters of machines or for the big boxes like the T3.
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