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Subject: Re: Cool it please - Vincent

Author: Gian-Carlo Pascutto

Date: 13:47:50 09/04/02

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On September 04, 2002 at 12:00:32, Robert Hyatt wrote:

>Have I not said _many_ times that the parallel speedup is a very dynamic
>value that can change significantly on the same position run multiple times?
>have I not given you several examples of such?  Do you not understand that you
>can run a test once and get 2.8, and run it again and get 3.1?  If you don't,
>I can't help you at all.

Your problem is that my testing included error analysis (*), and as far
as I remember (again, dont have the data on this machine), the result
was *not* compatible with a speedup of 3.1.

The speedup for the same experiment *cannot* be two different values that are
outside each others error margins at the same time.

Your speedup in my test conditions was 2.8 plus or minus something.
Not 3.1 plus or minus something.

(*) Which is missing in your papers *everywhere*. In fact, it's exactly
this that caused Vincent and me to discover your time numbers were
questionale.

--
GCP



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