Author: Albrecht Heeffer
Date: 23:31:21 01/28/99
Go up one level in this thread
On January 28, 1999 at 15:56:40, Robert Hyatt wrote:
>note that some of the positions end up in tablebases. I don't know what they
>used, but I used none, because of the format change from 15.20 to 16.0. As a
>result, I ran with no tablebase hits possible...
We did use the old tablebases (72). In the log files you can see the probes.
In fact we probably saved the Kallisto game from a draw by the tablesbases.
The endgame was was winning but Bionic did not play the best moves until
suddenly:
13 6.31 fhigh Kd6!!
13-> 7.20 6.62 Kd6
14 7.58 fhigh Kd6!!
14-> 13.08 7.01 Kd6
15 13.26 fhigh Kd6!!
15 17.08 Mat28 Kd6 Kg7 Ke6 f5 Bf3 Kh6 Kf6 Kh7 Bc6
Kh6 Bd7 <HT>
time=23.65 cpu=196% mat=2 n=9446180 fh=98% nps=399415
ext-> checks=236796 recaps=13251 pawns=234693 1rep=184173
predicted=37 nodes=9446180 evals=3370257
endgame tablebase-> probes done=137165 successful=137159
hashing-> trans/ref=111% pawn=99% used=w29% b37%
SMP-> split=2503 stop=80 data=8/64 cpu=46.52 elap=23.65
mate in 28 moves.
>If someone has a PII/400 they can run on, I can run crafty on one processor at
>1 minute per position, and they could run bionic the same way. A PII/400 and
>my xeon/400 are close to the same speed. that would be the best comparison
>unless one person wants to run both bionic _and_ wcrafty_15.20.exe (from my
>ftp site) on the same box, which would be even better...
>
>I'd much prefer that to eliminate all variables. the SMP code produces some
>odd results at times, and my linux version is 15% slower than the corresponding
>windows executable due to MSVC being a better compiler. All in all, too many
>different things...
The results so far do not seem to indicate that Crafty 15.20 plays all
the same moves as the Bionic games in the Dutch Open. I'm still wondering
how you were able to reproduce all the right moves in three games with
Crafty 16.1 on your hardware. Did you use SMP then?
Albrecht Heeffer
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