Author: James T. Walker
Date: 06:46:04 11/02/05
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On November 02, 2005 at 08:20:29, Chessfun wrote: >On November 02, 2005 at 08:03:56, James T. Walker wrote: > >>The dual core machine is new to me so I may ask stupid questions from time to >>time. >>When playing an engine/engine match with a dual core and both engines are >>"single cpu" it seems that they are automatically given one cpu each. That is >>great! What happens in the same situation when one of the programs is "Deep >>Sjeng" or some similiar program. Does Deep Sjeng try to use both CPUs or does >>it limit itself to only one? Is there any way to check/verify what is >>happening? >>Thanks, >>Jim > > >Look at it this way 100% CPU. If you use an engine just one then it uses only >50% CPU. If ponder is off then it uses only 50% when it is to move. > >If the match is ponder off then each engine only uses 50% on it's turn to move. > >If a dual is used it will use 100% on it's move and then on the opponents move >the opponent will use 50%\ > >In my case right now I have two chessbase interfaces open Chessprogram7 and >Chessprogram8. Each is running engine matches with each match having 50% CPU and >each engine with ponder off. > >You can check simply in task manager and see engines switching. You can also >assign CPU1 and CPU2 to a specific target lets say CPU1 to ChessProgram7 and >CPU2 to chessProgram8. > >Sarah. Hello Sarah, In reading your post closely I have come up with another question. When a "Deep" program is on it's move you say it will use 100% but this is with ponder off. What if I'm running my matches with ponder on as I like to do? Does it drop to only 50% on it's move and when pondering while giving the "single" it's 50% all the time? In other words does the "Deep" program act as a "single" under those conditions. I can't check now since I'm running a match between Fruit and Junior 9. Also I haven't found out how to assign specific cpu's yet so maybe that will do what I want. Jim
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