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Subject: Re: SURPRISING RESULTS P4 Xeon dual 2.8Ghz

Author: Vincent Diepeveen

Date: 09:14:16 12/17/02

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On December 17, 2002 at 12:03:38, Matt Taylor wrote:

Matt, dr hyatt hasn't showed *any* data regarding 2 cpu's without HT
versus 4 CPU's with HT.

He has only showed you something from which he admits he already knew
in advance that he was producing intel friendly results.

He admits somewhere else in this thread that he KNEW that running
2 threads at HT turned on at his dual Xeon, that this would run worse
than 2 threads without HT because of the 33% chance it would go wrong.

So he knew then that his test could be intel friendly and that the
real test, which he never performed, wasn't done at all.

So much for 'objective testing' from Hyatt.

Best regards,
Vincent

>On December 17, 2002 at 11:58:21, Gian-Carlo Pascutto wrote:
>
>>On December 17, 2002 at 11:27:18, Matt Taylor wrote:
>>
>>>Crafty gets better results with HT,
>>
>>In addition to what Vincent said, the data we currently
>>have is saying exactly the opposite.
>>
>>So I'd like to know what you based that statement on.
>>
>>Magic 8-ball?
>
>Actually I based it on data that Dr. Hyatt posted previously. The data Vincent
>has for his program doesn't show such wonderful gains. That's nice. It's not
>representative of everything, and it's not even conclusive. Truth is, Vincent's
>data doesn't show jack. You need multiple tests and multiple machines to show
>anything conclusively.
>
>>>but it's been optimized for HT.
>>
>>It's not - even Robert will tell you this.
>
>Ok, it's been optimized for Pentium 4, which is -almost- the same thing. If it
>runs well on P4, it runs well with HT because it will fall into an I/O burst
>cycle. He has stated a number of times that his interests are in the P4 because
>he has one on his desk. Eugene's interests are obviously in the P4. It's not
>rocket science to figure out what that means.
>
>-Matt



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