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Subject: Re: Company politics - intel c++ for computerchess sucks at K7

Author: Vincent Diepeveen

Date: 04:19:19 05/12/02

Go up one level in this thread


On May 12, 2002 at 06:04:47, Bo Persson wrote:

>On May 11, 2002 at 09:44:18, Vincent Diepeveen wrote:
>
>>On May 10, 2002 at 23:20:32, Robert Hyatt wrote:
>>
>>>On May 09, 2002 at 22:18:18, Vincent Diepeveen wrote:
>>>
>>>>On May 09, 2002 at 10:21:28, Robert Hyatt wrote:
>>>>
>>>>>On May 08, 2002 at 23:54:50, Vincent Diepeveen wrote:
>>>>>
>>>>>>Sometimes i hate company politics. A superb compiler intel c++
>>>>>>they weakened it for K7. Where 5.0.1 compiler was pretty fast
>>>>>>for the superb K7 processors, the 6.0 compiler is deliberatly
>>>>>>doing bad for K7.
>>>>>
>>>>>
>>>>>I doubt it is "deliberate".  Why would Intel worry about optimizing for
>>>>>the K7 when they don't build them?
>>>>>
>>>>>Wouldn't make any sense at all, IMHO...
>>>>
>>>>because 5.0.1 is faster on k7 than 6.01
>>>>
>>>
>>>
>>>So what?  I have occasionally done things to Crafty to make it faster on
>>>a pentium, which also makes it slower on _other_ architectures.  But since
>>>I do 99% of my testing on Intel, this is the way things work out.  I could
>>>see lots of places where optimizing for intel would break AMD processor
>>>pipes at times...  The inverse is also true, but since AMD is not writing
>>>a compiler for their chip, they don't have something to make them look
>>>their best...
>>>
>>>Which will always hurt them on SPEC of course...
>>>
>>
>>AMD must be busy with their own compiler, otherwise the whole
>>Hammer chip is a major joke; only alternative could be visual m$ works
>>on a compiler for it.
>>
>
>I will give you a clue:
>
>MS has already promised to deliver Windows for the Hammer. Guess what compiler
>they will be using!
>
>Bo Perswson
>bop2@telia.com

That's very good news because m$ has a very experienced compiler team



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