[SciPy-user] Sparse factorisation

Gael Varoquaux gael.varoquaux@normalesup....
Fri May 1 03:33:42 CDT 2009


On Fri, May 01, 2009 at 05:08:37PM +0900, David Cournapeau wrote:
> Gael Varoquaux wrote:
> > On Thu, Apr 30, 2009 at 08:52:28PM -0700, Ondrej Certik wrote:

> >> Is umfpack in scipy really broken? That is very disappointing. 

> > There are some signs of it being depreciated in the source code.

> umfpack is under the GPL. My understanding is that new contributions to
> umfpack should go to the corresponding scikit.

Right, new versions of UMFPACK are indeed under GPL. I just noticed that.
Have you tried contacting Tim Davis about that. The web page does suggest
to contacting him for distributing UMFPACK under a different license. My
guess is that distirbuting UMFPACK under BSD with scipy would be contrary
to distributing it under GPL in the main download page, so our chances
are small.

Now I understand better the switch to SuperLU.

Gaël


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