Author: Robert Hyatt
Date: 10:27:51 05/22/98
Go up one level in this thread
On May 22, 1998 at 03:34:18, Ulrich Tuerke wrote:
>On May 22, 1998 at 00:53:36, Komputer Korner wrote:
>
>>On May 20, 1998 at 03:53:09, Ulrich Tuerke wrote:
>>
>>>On May 19, 1998 at 12:24:50, Komputer Korner wrote:
>>>
>>>>You are right. Comet is now winning the matches at 3 2 time controls. I
>>>>now have a small opening book for Crafty and have put in the proper hash
>>>>tables, so each side is using 24Mb main hash with Crafty also using 4Mb
>>>>pawn hash. Actually I spoke too soon about the results of 60 moves/1
>>>>minute time controls. Comet actually had the upper hand in the end.
>>>>However I am running these matches on a pentium 166 and Crafty does much
>>>>better on Pentium Pros and above. Can you definitely verify that
>>>>pondering is turned off for Comet during these matches in Winboard? I
>>>>have pondering turned off for Crafty but I don't know how to turn the
>>>>pondering off or whether it is by default off for Comet. If Comet is
>>>>pondering then these matches aren't fair.
>>>
>>>Unfortunately, I am not really familar with WINBOARD. By default,
>>>Comet's pondering should be turned on. ("Pondering" means use of
>>>opponent's time too, right ?)
>>>If you can manage to send an "easy" command via the WINBOARD interface
>>>to Comet, then it will turn off pondering.
>>>
>>>But I think it would also be fair to let both programs ponderm, wouldn't
>>>it ?
>>
>>
>>When both programs ponder I get error messages and vanishing pieces when
>>running in WIN NT 4 SP 3. Also even when only Comet is pondering, The
>>first Comet process doesn't exit out of RAM when the next game starts.
>>Thus half way through a match, there are many Comet processes in RAM
>>each taking up CPU time. How would you set pondering off on a command
>>line with Winboard? There are other problems with these matches such as
>>both programs letting their clock run out even when in Fischer time
>>controls.
>
>Peculiar! I have made 40-50 games between Comet and TCB, GNU, Crafty,
>and Patzer on my PC at home (sudden death mode) - always both programs
>pondering. No problem. I've used WIN-95. Roland Pfister didn't report
>any problem either on his WIN-NT system.
>Don't know what's going on. May be, winboard (or is it windows ?) is a
>rather complicated system ?
There is more to this than meets the eye I'm afraid. In "stress tests"
I
play game/1sec games between two crafty processes, just to bang on
everything
as hard as possible. At this rate, I average about 90 games per minute,
and
I have let it run for hours with no hangups. And then someone reports
that
when *they* run crafty vs crafty, strange things happen. Ditto for
Crafty
vs TCB or whatever...
Therefore, I'm not sure who/what's at fault. I'm convinced something is
wrong, but since I can't reproduce it with xboard, I have no chance of
fixing it with no clue as to what is happening, *if* it is a bug in my
code. But I can't imagine a harder test than game/1sec, two programs,
both
pondering, etc. That is a real test and it is fun to watch the board
simply
"blur" and then reset, then 'blur" and then reset. I set this up by
using
the crafty.rc file and setting the search time to .01 seconds... It can
be nearly done by -tc 1 -mps 999 which says (roughly) 100 moves per 10
seconds...
But we need winboard debug output for a game where a piece disappears or
where the illegal move popups show up... then we can see who is
producing
the illegal move or why winboard/xboard thinks a move is illegal...
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