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Subject: Re: Problem with the new crafty 17.11

Author: Robert Hyatt

Date: 07:29:40 06/09/00

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On June 09, 2000 at 02:04:43, Dann Corbit wrote:

>Problems, problems.
>Run bench, and bad magic happens:
>
>Bunch of this goes on...
>
>piece=1,from=11,to=20,captured=3
>ply=8
>captured a king
>piece=7,from=27,to=20,captured=3
>ply=8
>captured a king
>piece=5,from=27,to=20,captured=3
>ply=8
>captured a king
>piece=7,from=20,to=4,captured=3
>ply=7
>captured a king
>piece=7,from=20,to=4,captured=3
>ply=7
>captured a king
>piece=7,from=34,to=27,captured=3
>ply=12
>captured a king
>piece=5,from=34,to=27,captured=3
>ply=12
>captured a king
>piece=7,from=20,to=27,captured=3
>ply=12
>
>bad move from hash table, ply=5
>bad move from hash table, ply=11
>bad move from hash table, ply=11
>bad move from hash table, ply=11
>bad move from hash table, ply=12
>bad move from hash table, ply=13
>bad move from hash table, ply=13
>bad move from hash table, ply=13
>bad move from hash table, ply=13
>bad move from hash table, ply=13
>bad move from hash table, ply=13
>bad move from hash table, ply=13
>
>Finally, crashes out to DOS prompt.



If I were guessing, I would suspect the compiler.  I have run 'bench' several
times, and this version has been playing unchanged on the chess server for
several weeks.  The main headache here is that I have modified egtb.cpp to
default to use the 6 piece tabelbases.  However, this makes some monster
arrays and if you have any 6 piece files, it will malloc() a bunch more for
decompression indices.  If I crank it up on my ftp server with all the table-
bases handy, the indices are over 60 mb by themselves.

You might try deleting the #define T33_INCLUDE and see how it goes.

I just finished running bench again on a single cpu notebook:

White(1):
Running benchmark. . .
......
Total nodes: 53957256
Raw nodes per second: 154163
Total elapsed time: 350
SMP time-to-ply measurement: 1.828571
White(1):




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