[Numpy-discussion] The value of a native Blas

Perry Greenfield perry at stsci.edu
Thu Jul 29 13:01:05 CDT 2004

On 7/29/04 3:55 PM, "Stephen Walton" <stephen.walton at csun.edu> wrote:

> On Thu, 2004-07-29 at 11:57, Chris Barker wrote:
>> One linked against the Apple Supplied vec-lib as the BLAS. (From Bob
>> Ippolito's PackMan database (http://undefined.org/python/pimp/)
> Well, I'm a sucker for trying to increase performance :-) .  AMD's Web
> site recommends ATLAS as the best source for an Athlon-optimized BLAS.
> I happen to have ATLAS installed, and the time for Chris Barker's test
> went from 4.95 seconds to 0.91 seconds on a dual-Athlon MP 2200+ system.
> To build numarray 1.0 with this setup, I had to modify addons.py a bit,
> both to use LAPACK and ATLAS and because ATLAS was built here with the
> Absoft Fortran compiler version 8.2 (I haven't tried g77).  Is anyone
> interested in this?

Well, I guess we are :-) Let us know what you had to do to get it to work.

Thanks, Perry

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