Author: Peter Berger
Date: 06:46:50 01/01/04
Go up one level in this thread
On January 01, 2004 at 09:39:14, James T. Walker wrote: >On January 01, 2004 at 09:35:59, Uri Blass wrote: > >>On January 01, 2004 at 08:29:21, Martin Andersen wrote: >> >>>On January 01, 2004 at 08:07:49, Uri Blass wrote: >>> >>> >>>> >>>>Most of my tests are done without pondering. >>>> >>>>I have only a single processor to test so I do not trust matches with ponder on >>>>when programs do not ponder 100% of the time. >>>> >>>>Uri >>> >>>If you have ponder on the programs will use approx. 50% of CPU time each, right >>>? >> >>This assumption is wrong and program may ponder only in part of the moves when >>in part of the moves(for example when they have no pv) they may not ponder. >> >>Uri > >Why is this different from "normal" operation when one program is running on one >computer? >Jim Assume one computer with 500Mhz, time control is 1 min/move. a.) Ponder=Off Both engines get the full 500MHz when it is their move, and don't do anything when its the other's move -> fair conditions b.) Ponder=On Both engines get half the power of the 500MHz (let's call this 250Mhz) most of the time -> this would be fair conditions too. But it can happen that one engine doesn't have a move to ponder. So the other engine can think, while the first one sits idle. If the thinking one only got 250MHz this would still be fair, but the engine will suddenly get twice the power for this move, namely the full 500MHz. -> unfair conditions Peter
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