[Numpy-discussion] Numpy, BLAS & LAPACK

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? 


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
> > LAPACK_lite. 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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