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Subject: Re: significant math

Author: Robert Hyatt

Date: 15:03:28 11/19/02

Go up one level in this thread

On November 19, 2002 at 16:59:29, Gian-Carlo Pascutto wrote:

>On November 19, 2002 at 16:53:48, Robert Hyatt wrote:
>>Yep and I don't do it.  I've given you _real_ numbers.  Of course you can
>>run the test that Bruce and I did for yourself.  Crafty's source is available,
>>so you have
>>access to a bitmapper.  Yours isn't a bitmapper so you have access to one that
>>is not.
>>Compile both using the same compiler on a 32 bit machine and on a 64 bit machine
>>see if one speeds up _more_ than the other.  If so, you have to explain why that
>>attributed to the 64 bit architecture...
>I thought this thread was about current performance rather than future
>performance. I've posted my opinion about bitboard vs nonbitboard as
>soons as 64-bit machines become common somewhere below this post.

I've _never_ said bitmaps are faster on X86, and I don't recall that being in
this thread
anywhere.  I have _always_ claimed that bitmaps seem to be about as good as any
approach on a 32 bit machine.

Then we started the 64 bit discussion at some point.  I seem to remember that
you did,
on several occasions within this thread, take issue with the statement "bitboard
gain more from moving to a 64 bit architecture than non-bitboard programs do."

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