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Re: Bug#680096: ATLAS on PowerPC

"Lennart Sorensen" <lsorense@csclub.uwaterloo.ca> writes:

> On Wed, Jul 04, 2012 at 09:39:37PM +0200, Sébastien Villemot wrote:
>> My understanding is that POWER3 does not have Altivec, so it may
>> therefore be the best option.
> Unless of course it has other instructions that the G4 doesn't have.

Looking again at Atlas build-system (in CONFIG/src/atlcomp.txt), it is
clear that POWER3 is the less specific. In particular it gets no
CPU-specific GCC flags, contrary to G4 (which gets -maltivec
-mabi=altivec -mcpu=7400 -mtune=7400). So I am going to enforce POWER3.

Thanks everyone for your feedback.

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

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