Author: chandler yergin
Date: 14:18:36 01/16/05
Go up one level in this thread
On January 16, 2005 at 12:16:53, Anthony Cozzie wrote:
>Please find the error in one or more of these statements Chandler:
>
>1. A tablebase access takes at least 2-3 ms, even on a 15K SCSI hard drve.
>
>2. Most engines (except for Diep ;) have evaluations that take a few
>microseconds or so.
>
>3. Therefore a tablebase access is on the order of 1000X slower than calling the
>evaluation function.
>
>4. Since most of the time is spent in the evaluation function, this means if the
>programmer called tablebase_probe() at every node it would run 1000X slower,
>that is 1K nps instead of 1M nps in Zappa's case.
Quoting from a previous Post:
How long does it take for your engine to find kf3 ?
[D]8/7R/1N2k1p1/P1p1b3/P3r3/7P/4K3/8 w - - 0 47
Yace almost immediately, loses it after some seconds. Finds it again after 3
hours (when I lost patience). Is Kf3 the only winning move?
Regards,
Dieter
So...? We have you stateing time, and another Programmer stateing
almost immediately...
Why wait 3 hours? Hmmmm?
Is there ANY possible justification for this?
He also had to ask.. is Kf3 the only winning move?
Is there any possible justification for him NOT knowing?
The King only has 6 possible moves!
Examine tham all at the same time...
Then, after a few seconds. or a minute..recognize the Computer has decided
on which is the best move, focus on that pV, and let it run...
Decrease the Lines to one, and the Scroll information as to time, and Nodes is
NOT Lost... you can still Clip the Ananysis and Paste..
>
>Note that we are talking about positions with (say) 8 pieces on the board; for
>example this KRPPPvKRP position. White wants to keep his passers together and
>win, Black hopes to split them and (possibly) draw.
>
>[D]8/8/r6k/6p1/6P1/5P1P/R6K/8 w - - 0 1
>
>When a lot of people (experts especially) think something, it is usually good to
>at least consider their position. They might be wrong anyway, but they probably
>have at least some justification for their opinion. I get the feeling that you
>never read anything I write, but I keep trying for the sake of world (or at
>least forum) peace anyway :)
>
>anthony
I do read what you write anthony, I wonder if you do the same for me.
Now please refute what I wrote, or try, and I'll listen carefully.
Thanks, Chan
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