[SciPy-user] singular value decomposition

Robert Kern robert.kern@gmail....
Wed Sep 17 03:25:31 CDT 2008


On Wed, Sep 17, 2008 at 03:20, Chris Lee <c.j.lee@tnw.utwente.nl> wrote:
> Hi All,
> I have code that needs to repeatedly perform an svd on a matrix (2304, 2304)
> shape. It seems to take forever to do (I haven't timed it, but approximately
> two hours passed on the first trial (without completion) and I am now
> running a second to make sure nothing went wrong.
> Is this because I am not linked to an optimized BLAS/LAPACK library or
> something else?

Possibly. The same sized problem takes 40s for me using OS X's builtin ATLAS.

> I have access to mkl. Is it possible to link an already installed scipy to
> mkl, or would I have to reinstall?

You would have to reinstall.

-- 
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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