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Subject: Re: Comparing two Identical Programs using Different Processors Speed

Author: Jorge Pichard

Date: 14:56:06 01/28/01

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On January 28, 2001 at 16:58:22, Uri Blass wrote:

>On January 28, 2001 at 14:33:23, Jorge Pichard wrote:
>
>>Six Weeks ago I matched Nimzo 8 Vs Junior 6 at G\60 using an AMD Athlon 800 MHz
>>And the score after 75 games ended up with a slight advantage of 6.5 points for
>>Nimzo 8. Then one week after that match, I decided to match the same two
>>programs, but I used an AMD K6-2 500 MHz instead, and the score after 75 games
>>ended this time in favor of Junior 6 by almost the same margin as the previous
>>match. I realized that certain program benefit more than others as the speed of
>>the processor increases, but I wasn't satified yet and decided to test the same
>>two programs one more time with a slower processor this time. I asked my friend
>>John to test these two programs again with his old Pentium Celeron 333 MHz at
>>G\60 and after 9 games, Junior 6 was beating Nimzo 8 by W7 D2 L0 and, at that
>>moment I decided to stop the match. I can only conclude that Nimzo 8 benefit
>>more as the speed of the processor increase, therefore, Nimzo 8 will not have a
>>great SSDF rating by the middle of February, but if you have a P.C. with a
>>processors higher than 800 MHz Nimzo 8 is one of the few programs that benefit
>>the most by using the latest technology available.
>>
>>Pichard.
>
>I do not understand why do you work so hard in playing games.
>
>I think that you should find the number of nodes per seconf of nimzo8 and
>Junior6 on:
>
>1) Celeron 333
>2) K6-2 500
>3)Athlon 800
>
>For example
>If you find that nimzo's number are 250000,500000,1000000
>when Junior's numbers are 300000,500000,830000 then it will be an excellent
>proof that Nimzo earns more from the new processors.

The NPS is not the a true scientific measure of Knowing why a certain program
benefit more than another from the gain in processors speed. For instance, if
you provide Nimzo 8 to play a game by using 1 Minute per moves and at the same
time you provide Junior 6 also 1 minute per move. You might have this escenario:

1.  Let say that after one minute Nimzo 8 was able to reach XXXXXX NPS by using
the Celeron 333 MHz but was not able to find the best move within that horizon,
whereas Junior 6 by reaching XXXXXX NPS was able to find a better move. Now when
you increase the speed of the processor to a higher level (K6-2 500 MHz) Nimzo 8
is now getting closer to zero in, where it could find a better move provided the
same amount of time of 1 minute per move, whereas Junior 6 is still providing
almost the same evaluation. Finally, when you increase the speed of the
processor to a minimum of 800 MHz, Junior 6 is of course calculating a higher
number of NPS, but is not improving the evaluation too significant as compared
to Nimzo 8 when is finally reaching is peak.

Pichard.

>The question which program earns more from slower time control is of course a
>different question and in this case you need games.
>
>Uri



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