Author: Omid David
Date: 08:39:55 07/24/02
Go up one level in this thread
On July 24, 2002 at 10:04:45, Uri Blass wrote: >On July 24, 2002 at 09:59:04, Steffen Jakob wrote: > >>On July 24, 2002 at 09:50:24, Uri Blass wrote: >> >>>On July 24, 2002 at 09:36:33, Slater Wold wrote: >>> >>>>On July 24, 2002 at 09:11:54, K. Burcham wrote: >>>> >>>>> >>>>> >>>>>I am curious how you look at operating systems and the chess software we use, >>>>>in relation to limitations due to hardware speed increases. >>>>> >>>>>do you think the operating systems as we know them can handle the speed >>>>>increases we will see over the next few years. I would think that there is some >>>>>sort of limitation that the current operating systems could handle when pushed >>>>>running a chess program at greater speeds. >>>>> >>>>>also the same for chess programs. can the chess code, the way it is written >>>>>today, function without errors at greater speed increases. what do you see is >>>>>the limitation of our chess programs when it comes to hardware speed increases? >>>> >>>>The only thing I will say on this topic is that I know when *some* engines are >>>>getting 10M+ nps SEE and null move are going to back fire. >>> >>>I do not know it. >>> >>>null move without detecting zugzwangs is going to back fire at some speed >>>but we are not close to that speed. >>> >>>I do not believe that with 10M nodes per second null move is going to be counter >>>productive. >>> >>>> >>>>Of course, some programs like Rebel don't use null move, so they will be >>>>unaffected. >>> >>>I remember from previous post of Ed that the latest Rebel use null move pruning >>>and null move pruning is more productive at long time control(exactly against >>>your intuition and the intuition of the deep blue team). >>> >>>I believe that today Junior is the only top program that does not use null move >>>pruning. >> >>From the "CSS Sprechstunde" with Christophe Theron: >> >>"Eduard Nemeth: Is The Tiger nullmove free (genius is)? Stimmt es, dass der >>ChessTiger nullmove -frei ist, wie zB. der Genius? >> >>CT: Null move is not the major selective search algorithm of Tiger." > >I did not say that null move is the only selective search algorithm of the top >programs. > >I only said that all of them except Junior use null move pruning. >Genius does not use null move pruning but Genius today is not considered as a >top program. > >I am also not sure about hiarcs but I believe that it is using null move >pruning. > >Uri Rebel also doesn't use null-move pruning [ICCA No.22 Vol.3 1999]
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