[Numpy-discussion] Numpy, BLAS & LAPACK (original) (raw)

Eric Jonas jonas at mwl.mit.edu
Fri Jun 2 13:28:07 EDT 2006

Is there some way, either within numpy or at build-time, to verify you're using BLAS/LAPACK? Is there one we should be using? 

    ...Eric

On Fri, 2006-06-02 at 11:19 -0600, Travis Oliphant wrote:

Joris De Ridder wrote: > Just to be sure, what exactly is affected when one uses the slower > algorithms when neither BLAS or LAPACK is installed? For sure it > will affect almost every function in numpy.linalg, as they use > LAPACKlite. And I guess that in numpy.core the dot() function > uses the lite numpy/core/blasdot/dotblas.c routine? Any other > numpy functions that are affected? > convolve could also be affected (the basic internal dot function gets replaced for FLOAT, DOUBLE, CFLOAT, and CDOUBLE). I think that's the only function that uses dot internally.

In the future we hope to be optimizing ufuncs as well. -Travis

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