[SciPy-user] matrix inversion time (Python vs MATLAB)
Sat Jan 10 07:20:55 CST 2009
On Sat, Jan 10, 2009 at 7:57 AM, David Cournapeau
> Akshay Srinivasan wrote:
>> 2009/1/10 Sturla Molden <firstname.lastname@example.org>:
>>>> On Sat, Jan 10, 2009 at 4:57 AM, Sturla Molden <email@example.com> wrote:
>>>> Numpy does not come with ATLAS: it uses whatever blas/lapack you have
>>>> available. If you don't have any, numpy has an internal copy of a
>>>> light lapack, which is not the fastest.
>>> Ok. If I want to use ATLAS or MKL, must NumPy or SciPy be rebuilt? Or can
>>> I just replace the DLL?
>>> SciPy-user mailing list
>> I don't think you need to rebuild Numpy or Scipy, if the dynamic
>> libraries behave the same way - which I'm guessing is true.
> You guess wrong, there are many issues :) Names is only one problem, but
> there is also mixed ABI conventions (passing float by value or by
> reference, for example, which fortran runtime, etc...), which means it
> is very difficult to reliably support dynamic linking of those libraries.
> SciPy-user mailing list
How do I find out whether and which ATLAS and blas and lapack my
installed versions of numpy/scipy are using? I misplaced the
information and cannot find it anymore.
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