[Numpy-discussion] Numpy, BLAS & LAPACK

Travis Oliphant oliphant.travis at ieee.org
Fri Jun 2 12:19:05 CDT 2006


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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