Computer Chess Club Archives




Subject: Re: Perft 5,6 {Fastest program is List}

Author: Robert Hyatt

Date: 15:29:08 06/04/02

Go up one level in this thread

On June 04, 2002 at 18:20:53, Gian-Carlo Pascutto wrote:

>Odd, I get 39 secs for Crafty, 23.5 for Yace, which is a much bigger difference.
>(Crafty 18.12 vs Yace 0.99.68b)
>Dieter did some optimisations here or so?

No idea.  I didn't try to make this "fast" at all.  It was designed to
be a debugging tool for the move generator (for me), not as a performance
test.  Although it has been used for that.  It is reasonable to compare
perft for crafty version X on machine Y vs perft for crafty version X
on machine Z, to compare the two machines.  Compareing two different
programs' perft times doesn't mean a lot unless both programs have been
optimized to make it efficient.  I simply wrote it to be simple.  IE I
would turn off a _lot_ of Make/Unmake overhead to simply run perft as fast
as possible...

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