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

Author: Dann Corbit

Date: 15:48:13 06/04/02

Go up one level in this thread

On June 04, 2002 at 18:29:08, Robert Hyatt wrote:

>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...

Beowulf's Perft was a lot faster before.  The incremental hashing stuff made a
big hit in the perft number, but increased the overall performance.

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