Re: atlas3-base vs atlas3-sse2

[Keith Goodman]

On 4/3/06, Quentin Spencer <address@hidden> wrote:
> Keith Goodman wrote:
> > Matrix multiplication is much faster with atlas3-sse2 than with
> > atlas3-base. That's on an Intel machine.
> >
> > Should I expect the same speedup when going from atlas3-base to
> > atlas3-sse2 on an AMD machine?
> >
>
> It depends on what AMD hardware you're talking about. There's
> atlas3-3dnow for older AMD chips, but I think the newer ones support the
> sse2 extensions, so I would expect the best performance with
> atlas3-sse2. (Disclaimer: I only have experience with the Fedora
> packages, which are very similar to the Debian packages).

So it sounds like Fedora has a binary package of atlas3-sse2 for
amd64. If so, then it must be possible to get it working with Debian.

I've read that 3dnow is not IEEE compliant---sometimes you get the wrong answer.

Has anyone gotten their amd64 chip to use sse2 with atlas on Debian?



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