[SciPy-user] SciPy ATLAS vs. Matlab 7.2 linear algebra benchmarks

william ratcliff william.ratcliff@gmail....
Thu Aug 30 13:55:38 CDT 2007

Has the cookbook been updated for using the MKL libraries with scipy and
mingw under windows?  I installed it for numpy, but in scipy ran into some
problems awhile back because of problems using mingw with mkl.


On 8/30/07, Robert Kern <robert.kern@gmail.com> wrote:
> Jose Unpingco wrote:
> > For this experiment, I create a square matrix with random entries of
> > size 500, 1000, 1500, 2000 and then apply a variety of factorizations to
> > those matrices. Naturally, each of these experiments is run on exactly
> > the same workstation. The times are wall times in seconds.
> >
> > The bottom line is that Matlab is still substantially faster than either
> > of the ATLAS library versions.
> Please be careful with such statements. Matlab is not the thing that's
> faster;
> it's the BLAS and LAPACK underlying it. I see that in 7.2, they've started
> using
> the Intel MKL or the ACML (depending on the processor) by default. That's
> the
> source of the timing difference. Note that scipy can use either of these
> libraries, too.
> --
> Robert Kern
> "I have come to believe that the whole world is an enigma, a harmless
> enigma
> that is made terrible by our own mad attempt to interpret it as though it
> had
> an underlying truth."
>   -- Umberto Eco
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