[Numpy-discussion] Numeric to numarray experiences
jmiller at stsci.edu
Tue Oct 5 13:37:42 CDT 2004
On Tue, 2004-10-05 at 16:00, Darren Dale wrote:
> On Tuesday 05 October 2004 03:17 pm, Stephen Walton wrote:
> > On Tue, 2004-10-05 at 10:41, Raik Grünberg wrote:
> > > Our sysadmin noted that unlike Numeric, numarray is not using any
> > > external math libraries (like LAPACK) that have been speed-optimized for
> > > decades and are available in CPU-optimized variants (e.g. ATLAS). It's
> > > probably difficult to match this efficiency with any new code ...
> > This is a key point. Have a look at addons.py in numarray, some
> > previous comments on this list, and build numarray with the line
> > env USE_LAPACK=1 python setup.py build
> > after editing addons.py appropriately. You should see a major speed
> > improvement.
> I would kindly suggest updating the numarray documentation.
Thanks, will do.
> In the section on
> installation, it is easy to overlook the option to compile againist existing
> libraries. That is explained in section 16, which appears to be out of date.
> The code listed in Packages/LinearAlgebra2/setup.py has been moved to
> addons.py, correct?
More information about the Numpy-discussion