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Re: Using LAPACK in octave


From: David Bateman
Subject: Re: Using LAPACK in octave
Date: Tue, 11 Sep 2007 22:20:26 +0200
User-agent: Thunderbird 1.5.0.7 (X11/20060921)

David Bateman wrote:
> 
> I've often felt that Octave should change to use the same solver as
> Matlab, especially now as the sparse matrices in Octave use a QR solver
> with pivoting and don't give exactly the same results as the dense solvers..

If you want another reason to change consider Figure 3.3 on the page

http://www.netlib.org/lapack/lug/node71.html

for N = 500 dgelss is about 35 times slower than dgelsy

D.


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