Author: Frank Quisinsky
Date: 10:42:13 04/26/01
Go up one level in this thread
On April 26, 2001 at 08:42:41, Uri Blass wrote: >On April 26, 2001 at 06:44:14, Frank Quisinsky wrote: > >>On April 25, 2001 at 23:32:01, Robert Hyatt wrote: >> >>>On April 25, 2001 at 15:49:58, Frank Quisinsky wrote: >>> >>>>Hi there, >>>> >>>>I gave Crafty 2 CPUs, see the np/s from Chess Tiger. >>>>The games will be replayed. >>>> >>>>:-(( >>>>Frank live ... >>>>I forgot to adjust "Thread = 1" in the options from Crafty :-( >>>> >>>>Best >>>>Frank >>> >>> >>>Ugh.. if that is on a dual, it will kill my program. I get two threads >>>going, tiger has a third, and that is bad. It is quite possible that I >>>was searching nothing much at all in some cases. >>> >>>The problem is that one thread might be sitting on a spinlock and running >>>while the other thread is not executing due to Tiger. That is just wasting >>>the second cpu. Crafty's parallel search _absolutely_ must have 100% of all >>>the processors you use it on... or it will die horribly. >>> >>>It doesn't like 'shared machines' for the parallel search. _ever_. It isn't >>>harmful for the serial search of course. But for the parallel search, it is >>>awful. >> >>Hi Bob, >> >>since the latest Chess-Base "Native" versions of Crafty it is possible to set >>under Engine options "Thread = 1 or 2" on dual machines. Default = Thread 2 on >>Dual Machines. So I mus adjust Thread = 1 for Engine - Engine matches. >> >>Here I made a big mistake and forget to adjust Thread = 1 :-( >>Christian Koch see this (not enough np/s for Chess Tiger in the games where I >>have yesterday here posted). >> >>Sorry, I must replayed the games. >> >>BTW: >>Thanks to Chessfun for his comments. > >Correction: >her comments and not his comments > >Uri >> >>Best >>Frank Hi Uri, yes ... sorry ! Best Frank
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