Computer Chess Club Archives




Subject: Re: DB NPS (anyone know the position used)?

Author: Robert Hyatt

Date: 10:21:47 01/27/00

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On January 27, 2000 at 08:16:47, leonid wrote:

>On January 26, 2000 at 23:47:40, Robert Hyatt wrote:
>>On January 26, 2000 at 17:21:36, leonid wrote:
>>>800k (nodes per second) on 1600Mhz sound to me as extremely speedy. Maybe Xeon
>>>is also the 64 bits computer. This could explain this speed excess with what I
>>>could expect. I compare your speed with one PC game written on Assembler. Your
>>>speed just shine.
>>I don't think that is fast.  IE it is about 200K nps on a single xeon/400mhz
>>processor.  Fritz/Junior are _way_ faster.
>If single Xeon 400Mhz is almost the same like AMD 400Mhz, your speed is more
>that good. Few days ago I found that Rebel 10 on AMD 400Mhz have average number
>of positions/second around 165k. I counted the speed for the positions where
>expected speed should be the biggest. This is why I am so surprised with your
>speed rate.

Depends on the position.  There are plenty of cases where I get less than
500K nodes per second, particularly if neither side has castled, as I spend
a lot of time making sure that I castle when I should, don't castle when I
shouldn't, and castle to the right side when castling in either direction is

My speed rangd goes from 450K to about 1M.  Or on a single Xeon, take 1/4 of
the above...
>>And no the xeon is not a 64 bit machine.  Mine are PII's but with a better
>>L2 cache.  PIII xeons are a bit better...

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