[SciPy-User] deterministic python code which is unstable

[Sturla Molden]

Robert Kern <robert.kern at gmail.com> wrote:

> We build against BLAS and LAPACK, which are API specifications that
> are implemented by many different vendors. One can build numpy and
> scipy against any of those implementations. You can try to track down
> the implementation of the BLAS and LAPACK library that you are
> currently using and try to fix it, if it's an open source one.

scipy.optimize.leastsq uses a QR solver from MINPACK. 



Sturla