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Subject: Re: By the way, here is an instance where crafty's node counts truncate

Author: Richard A. Fowell (fowell@netcom.com)

Date: 23:29:00 09/21/99

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On September 21, 1999 at 13:38:56, Dann Corbit wrote:

>On September 21, 1999 at 13:20:59, Dann Corbit wrote:
>[snip]
>>              time=600:00  cpu=99%  mat=0  n=2230832056  fh=1%  nps=61952
>>              ext-> checks=663307593 recaps=20560034 pawns=12911665
>>1rep=21027250 thrt:296212
>>              predicted=0  nodes=2230832056  evals=1175553882
>>              endgame tablebase-> probes done=48311  successful=44616
>The actual node count will be something around 6 billion.

Looks like rollover of an unsigned 32-bit int. It's a common symptom - at
least Crafty doesn't seem to be using signed 32-bit ints, which leads to the
ever-popular negative node count. MacChess went to 64-bit ints
a number of revs back because of this issue, which I first noted when
running 3-day analyses.

Richard A. Fowell (fowell@netcom.com)
http://dmoz.org/Games/Board_Games/Chess/Software/Macintosh/

• Re: By the way, here is an instance where crafty's node counts truncate Robert Hyatt 10:36:11 09/22/99
  • Re: By the way, here is an instance where crafty's node counts truncate Dann Corbit 12:18:07 09/22/99
  • Re: By the way, here is an instance where crafty's node counts truncate David Eppstein 11:32:00 09/22/99
    • Re: By the way, here is an instance where crafty's node counts truncate Robert Hyatt 12:25:16 09/22/99
      • Re: By the way, here is an instance where crafty's node counts truncate Andreas Stabel 02:00:04 09/23/99
        • Re: By the way, here is an instance where crafty's node counts truncate Robert Hyatt 06:53:00 09/23/99
          • Re: By the way, here is an instance where crafty's node counts truncate Heiner Marxen 11:07:03 09/26/99
            • Re: By the way, here is an instance where crafty's node counts truncate Robert Hyatt 13:25:44 09/26/99
              • Re: By the way, here is an instance where crafty's node counts truncate Eugene Nalimov 16:15:37 09/26/99
              • Re: By the way, here is an instance where crafty's node counts truncate David Eppstein 15:29:37 09/26/99
                • Re: By the way, here is an instance where crafty's node counts truncate Robert Hyatt 18:48:04 09/26/99
                  • Re: By the way, here is an instance where crafty's node counts truncate David Eppstein 19:39:30 09/26/99
              • Re: By the way, here is an instance where crafty's node counts truncate Heiner Marxen 15:05:19 09/26/99
    • Re: By the way, here is an instance where crafty's node counts truncate Dave Gomboc 12:00:12 09/22/99
      • Re: By the way, here is an instance where crafty's node counts truncate Dave Gomboc 12:00:47 09/22/99
        • Re: By the way, here is an instance where crafty's node counts truncate Dann Corbit 14:24:41 09/22/99
          • Re: By the way, here is an instance where crafty's node counts truncate Robert Hyatt 17:02:46 09/22/99
            • The upcoming C9x Standard Dann Corbit 17:22:42 09/22/99
  • Re: By the way, here is an instance where crafty's node counts truncate Eugene Nalimov 11:19:50 09/22/99

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