Author: Uri Blass
Date: 01:06:42 07/28/01
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On July 28, 2001 at 02:49:56, Dann Corbit wrote: >On July 28, 2001 at 02:21:06, Terry McCracken wrote: >[snip] >> >>>I copied the wrong post Dan! He does say one machine! >> >>*Hyatt/Quote "Nope... no joke at all. Two programs, one machine, my preference >>is ponder=on. >>>>>>>>both will get 1/2 of the machine and the time controls won't be screwed up." >> >>Wrong. That's clearly two machines. Let me pull out the relevant part so you >>>>can take a gander: >>>> >>>>"... I ran a test, gnuchess on a single-cpu, vs crafty on a quad pentium-pro >>>>200, but using only one cpu." >>>> >>>>Clearly, he is talking about two different machines >> >>Yes here he is clearly talking about two machines. >> >>But the quote above is _one_ machine. > >Surely (in that case) he is talking about a two-cpu machine. He has a machine >with 4 CPU's on it. > >I have accidentally ran two programs in ponder on a single CPU machine. Not >only do they both get blasted, but one is usually better at stealing cycles and >gets 70-80% of the CPU. It may be possible to prevent this problem by having a program that does not allow one engine to steal cycles. I understood that the chessbase interface tries to do it and if I understand correctly it does it better at longer time control(I never tried it so I do not know). Uri
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