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Subject: Re: crafty faster on AMD however

Author: Eugene Nalimov

Date: 14:06:29 09/30/02

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My guess it that Intel's compiler group also does not care how fast code they
generated is on PII/PIII.

Thanks,
Eugene

On September 30, 2002 at 16:07:37, Jeremiah Penery wrote:

>On September 30, 2002 at 12:26:36, Eugene Nalimov wrote:
>
>>Wrong. Some P4 optimizations hurt AMD.
>
>Then I suppose they hurt P2/P3 just as much.  Either way, my point is still
>valid, except for the psychotic cases where some optimization helps one and
>hurts the other (I'm sure there aren't a whole lot).
>
>>Thanks,
>>Eugene
>>
>>On September 30, 2002 at 00:09:28, Jeremiah Penery wrote:
>>
>>>On September 29, 2002 at 23:31:36, Robert Hyatt wrote:
>>>
>>>>I don't know what this means.  I have several dozen programs (Crafty
>>>>is only one) that we have run using intel's compiler and gcc, and in
>>>>_every_ case, Intel's compiler is faster.  On P2's, on P3's and on
>>>>P4's...  Of course I wouldn't use intel's compiler for an AMD chip,
>>>>why would they want to optimize for a competitor's chip???
>>>
>>>They don't have to optimize specifically for the competitor's chip, as Intel
>>>compiler still produces probably the fastest binaries for AMD machines.  Any
>>>general optimizations (P2, P3, and even P4 optimizations (excluding SSE2 stuff
>>>or whatever)) are just as helpful for AMD processors as they are for Intel ones.



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