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Subject: Re: Crafty and AMD64

Author: Michael P. Nance Sr.

Date: 10:02:30 08/30/03

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On August 29, 2003 at 23:34:09, Jeremiah Penery wrote:

>http://www.digit-life.com/articles2/insidespeccpu/insidespeccpu2000-opteron2.html
>
>An interesting comparison of compilers.  We can see that compilers using AMD64
>give Crafty between 50-100% speed improvement over x86-32.  If only those
>compilers were to the level of ICC/MSVC in the first place, it might be a real
>big win, but the weakness of GCC/(and especially)PGO compilers means that the
>speed boost doesn't translate into that much real gain over what the best 32-bit
>compilers already give.  GCC using AMD64 does, however, net a 30% increase in
>speed over ICC's score.
>
>Once we get a *good* compiler for these systems, I think Bob will finally be
>proven right about the benefits of 64-bit processors for Crafty.

While on the Subject,when will a compiler tuned for the Operton be available? I
think I read here that a Opteron compiler was in beta testing.



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