[Numpy-discussion] custom atlas

[Charles R Harris]

On Tue, Jul 5, 2011 at 7:45 AM, Neal Becker <ndbecker2 at gmail.com> wrote:

> I thought I'd try to speed up numpy on my fedora system by rebuilding the
> atlas
> package so it would be tuned for my machine.  But when I do:
>
> rpmbuild -ba -D 'enable_native_atlas 1' atlas.spec
>
> it fails with:
>
> res/zgemvN_5000_100 : VARIATION EXCEEDS TOLERENCE, RERUN WITH HIGHER REPS.
>
> A bit of googling has not revealed a solution.  Any hints?
>
>
>
I've never seen that, OTOH, I haven't built ATLAS in the last few years. Do
you have all the power saving/frequency changing options turned off? What
version of ATLAS are you using? What CPU?

Chuck
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