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Subject: Re: Crafty benchmark ?

Author: Owen Lyne

Date: 07:41:00 09/17/99

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On September 17, 1999 at 09:22:38, Bernhard Bauer wrote:
>I ran Crafty's benchmark for version 16.8 by starting the execulable and typing
>bench. I used no crafty.rc, so no special hash settings. I ran bench with
>1. Dann Corbit's executable
>2. Bob Hyatt's executable
>3. My executable
>all on a 450 MHz pentium.
>
>I got
>
>                              nodes      nps    sec   time_to-ply
>Dann Corbit                 61519180   249065   247   2.591
>Bob Hyatt                   71022354   280720   253   2.529
>My own                     191067196   250744   762   0.8399
>
>Question: Why does my own result differ so much in "nodes". I used MSVC++ 6.0.
>
>Remark: This version looks really god to me. Perhaps it is the strongest ever.
>Kind regards
>Bernhard

The last version is 16.18 not 16.8 - which did you use? The benchmark changed in
one of the recent versions, so it doesn't search as deeply (hence doesn't take
as long). Perhaps your own executable is hence running a different benchmark?
The NPD figures are similar from all 3 so that suggests they are basically the
same Crafty, but perhaps a different bench? You could look at the log files of
the benchamrks, see what depths have been searched to in each position. The
bench command specifies the depths for all 6 runs, the newer version sepecfifies
lesser depths - take a look see...

By the way, I'm interested in the 450MHz figures as I guess a PIII-600 would get
pretty exactly 1/3rd more? So in the 330,000 - 350,000 range, as opposed to my
600MHz Athlon getting 420,000.

How much do those Alpha's cost!?! ;)
Owen



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