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Subject: Re: What is the average nodes per second for minimax?

Author: Tom Kerrigan

Date: 10:58:58 06/28/00

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On June 28, 2000 at 09:31:38, leonid wrote:

>On June 28, 2000 at 06:39:09, Ralf Elvsén wrote:
>
>>On June 27, 2000 at 21:24:44, leonid wrote:
>>>
>>>Tom, I am sometime in Chess Club not that much for finding how to write my
>>>program, not even how do it competitive. This I can do alone. This is simple. I
>>>am here mainly to go "gossip"  a little bit about chess programming and verify
>>>some parameters in program. Recently it was about "effective branching factor",
>>>raw speed of certain part of my program, and so like. Sometime it is very easy
>>>to  find what you are been looking for. Like explanation that I found one day
>>>about "extensions", when I even not knew that they existe. Sometime it is not
>>>so. You can talk to somebody and find more about personality of man that about
>>>data that you need. And what I never, ever expected is that this place is so
>>>serious. You must take special care for using only precise, sacred words.
>>>Otherwise, you will be never understood and left in silence.
>>>
>>>Leonid.
>>
>>Leonid, can you tell me how many seconds your positional logic needs to
>>solve the "metapositions" in a typical chessgame-position? With
>>"metaposition" I mean the "relevant" information in terms of
>>"nodeevaluations" that is "attached" to
>>the original position in terms of searching brute-force with no extensions.
>>This would be very helpful to me.
>>
>>Ralf
>>
>>(friendly)
>
>Just send to me exact position or put it here. Will say you exact NPS. If I
>understood your expressions correctly, you are asking me about nodes/per/second
>when search is done exactly like my program is doing right now.
>
>Computer AMD 400Mhz. Program use no extensions or hash tables. Brute force
>search. Fixed depth.
>
>When I looked into average NPS counter (it count just what you said) and my
>program played against itself for first 50 moves (starting with initial
>position), I had two times numbers: 200000 and 167000 positions/in one second. I
>also remember that when I looked into average NPS (around 6 months ago), for the
>positions that I took from some Chess Revue, it was average 210000 nodes/second
>(or positions/second).
>
>Recently I looked what is number of NPS for minimax. Did this around 2 weeks
>ago. It was between 800000 and 1100000 nodes/second.

I believe Ralf's post was a joke.

The fact that you seemed to understand it makes this situation even funnier.

-Tom



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