Bug#680096: ATLAS on PowerPC

[Sébastien Villemot]

"brian m. carlson" <sandals at crustytoothpaste.net> writes:

> POWER3 is 64-bit.

But still POWER3 is supported by the 32-bit powerpc port:

 http://www.debian.org/releases/stable/powerpc/ch02s01.html.en#id522279

>  PPCG4 is 32-bit, but it requires the use of Altivec
> instructions, which G3 processors do not have.  So the answer is that
> neither of these is acceptable by default.

My understanding is that POWER3 does not have Altivec, so it may
therefore be the best option.

> Is there a reason that you cannot use the
> defaults of the compiler?

Yes, it has to do with the Atlas build system which does CPU detection
and timings at compile time, and which is quite intricate (to say the
least).

-- 
Sébastien Villemot
Researcher in Economics & Debian Maintainer
http://www.dynare.org/sebastien
Phone: +33-1-40-77-84-04 - GPG Key: 4096R/381A7594
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