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Subject: Re: DTS article robert hyatt - revealing his bad math

Author: Vincent Diepeveen

Date: 11:24:57 09/03/02

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On September 03, 2002 at 13:15:53, Matthew Hull wrote:

I didn't look at his machine, i just looked to the search
times Bob presented. Divided the 1 processor search time
by the n processor data where n = 2,4,8,16

and then realize that the chance you get such great
rounded off numbers is about 1/10 of a chance. just
one number doesn't proof anything, but about 100+ numbers
have a chance to be true:
 1 / 10^100 = 0.000000000000000000000000000000000000000000000000001
where there are about 100 zero's behind the dot. That means in short
it is a complete lie the search times.

>On September 03, 2002 at 13:07:54, Vincent Diepeveen wrote:
>
>>On September 03, 2002 at 13:05:30, Matthew Hull wrote:
>>
>>It gives the reason why i took a closer statistical look
>>at his data. In order to find what his speed penalties were
>>for processors.
>
>I guess I don't understand how you know what the speed penalties are for a Cray.
> Isn't that what the numbers are from, a Cray?
>
>>Then the fraud he committed was easy to find
>>out.
>>
>>>On September 03, 2002 at 12:57:38, Gian-Carlo Pascutto wrote:
>>>
>>>>On September 03, 2002 at 12:54:05, Matthew Hull wrote:
>>>>
>>>>>Perhaps if you had a good understanding and experience of Cray architecture,
>>>>>your statement would have more weight.  But, the supercomputer you are using is
>>>>>really very different from a Cray
>>>>
>>>>This has nothing whatsoever to do with whatever hardware was used. It
>>>>has nothing to do with Vincent doing something different from Robert.
>>>
>>>Yes it does!!!  look at the text from Vincent's post:
>>>
>>>"Nevertheless i worried about how to report about it. So i checked out the
>>>article from Robert Hyatt again. Already in 1999 when i had implemented
>>>a pc-DTS version i wondered why i never got near the speeds of bob
>>>when i was not forward pruning other than nullmove."
>>>
>>>That's why Vincent is trying to discredit Bob's numbers, because Vincent can't
>>>duplicate them.  Looks obvious to me.
>>>
>>>
>>>>
>>>>The issue is the nature of the data that was presented in the DTS
>>>>article by Robert.
>>>>
>>>>--
>>>>GCP



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