Re: inv() optimization flags

[Giorgos Bontzios]

Thank you for the reply.

I saw the FAQ, Seldon calls the same functions to the backend.

 

So how do you achieve such a speedup?

What optimization flags do you use for the compilation?

 

 

On Tue, Oct 8, 2013 at 9:49 PM, Jordi Gutiérrez Hermoso <address@hidden> wrote:

On Tue, 2013-10-08 at 18:47 +0300, Giorgos Bontzios wrote:

> I've noticed that the inv() function of Octave is quite faster than
> Seldon's which is weird since, to the best of my knowledge, Octave
> calls also the same LAPACK functions for inversion.

It does. Have you already read this FAQ?

    http://wiki.octave.org/FAQ#How_does_Octave_solve_linear_systems.3F

The exact method depends on the type of matrix that you input. If you
need more details, I would recommend stepping through the C++ source
with a debugger so you can see which LAPACK method Octave is calling.

- Jordi G. H.