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Re: bizarre number transformation [message #31653 is a reply to message #31489]

Mon, 29 July 2002 02:04

R.Bauer
Messages: 1424
Registered: November 1998

Senior Member

James Kuyper wrote:
>
> Reimar Bauer wrote:
> ...
>> thanks for these statements we do need double precision too.
>> I hope someone of INTEL will read sometimes this discussion,
>> because they have dropped double precision from their processors.
>
> Could you give some details on that? I could imagine INTEL producing
> chips that don't have double precision, for use in contexts where the
> extra precision isn't needed. I can't imagine them stopping production
> of processors that do provide double precision.

My last posting was not carefully enough written.
It is wrong to say "they have dropped double precision from their
processors"
what's I'd like to say is the performance of double precision looks like
as it
is only emulated. They have added a lot of more features to add speed to
several things but not for double precision.
In my eyes it looks like they have most interest in multimedia which
only need
fastest single precicision.

We have done here a lot of comparision of intel and amd processors.
The result is in simple words. You loose a lot of time if you are using
the actual Pentium 4 system instead of the actual amd if your
calculation needs double precision.

Reimar

--
Reimar Bauer

Institut fuer Stratosphaerische Chemie (ICG-I)
Forschungszentrum Juelich
email: R.Bauer@fz-juelich.de
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		bizarre number transformation By: merlecorp on Thu, 25 July 2002 04:46
		Re: bizarre number transformation By: R.Bauer on Mon, 29 July 2002 02:04
		Re: bizarre number transformation By: David Fanning on Fri, 26 July 2002 10:36
		Re: bizarre number transformation By: David Fanning on Fri, 26 July 2002 10:33
		Re: bizarre number transformation By: mperrin+news on Fri, 26 July 2002 10:14
		Re: bizarre number transformation By: Paul Van Delst[1] on Fri, 26 July 2002 07:39

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