LinearAlgebra incredibly slow for eigenvalue problems

[David M. Cooke]

"drife" <daranrife at yahoo.com> writes:

> Hi David,
>
> I performed the above check, and sure enough, Numeric
> is --not-- linked to the ATLAS libraries.
>
> I followed each of your steps outlined above, and Numeric
> still is not linking to the ATLAS libraries.
>
> My setup.py file is attached below.

> # delete all but the first one in this list if using your own LAPACK/BLAS
> sourcelist = [os.path.join('Src', 'lapack_litemodule.c')]
> # set these to use your own BLAS;
>
> library_dirs_list = ['/d2/lib/atlas']
> libraries_list = ['lapack', 'ptcblas', 'ptf77blas', 'atlas', 'g2c']
>
> # set to true (1), if you also want BLAS optimized matrixmultiply/dot/innerproduct
> use_dotblas = 1
> include_dirs = ['/d2/include']

This all look right (assuming you've got the right stuff in /d2).

When it compiles, does it look like it's actually doing the linking?
After doing python setup.py build, you can run ldd on the libraries in
the build directory (something like build/lib.linux-i386-2.3/lapack_lite.so).
If that's linked, then it's not being installed right.

You don't have a previous Numeric installation that's being picked up
instead of the one you're trying to install, do you?

At the interpreter prompt, check that
>>> import Numeric
>>> Numeric.__file__

gives you something you're expecting, and not something else.

-- 
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|David M. Cooke
|cookedm(at)physics(dot)mcmaster(dot)ca