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Subject: Re: SURPRISING RESULTS P4 Xeon dual 2.8Ghz

Author: Robert Hyatt

Date: 10:19:06 12/17/02

Go up one level in this thread


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

>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.

Actually you were right.  You might have noticed the inline assembly thread I
started a couple of weeks ago when I was working on the "pause" issue...


>
>-Matt



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