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Re: Sparse matrices?

From: Ian Searle
Subject: Re: Sparse matrices?
Date: Wed, 18 Jun 1997 11:36:04 -0700

U-E59264-Osman Buyukisik wrote:
> I would like to point to another M*tl*b like GPL'd program called
> Algae. It has sparse matrix matrix capability. Since it is GPL'd, sources may
> be usable in octave.
> Osman
> P.S. its URL is

The Algae author and I work together (don't ask). The code for sparse
matrix operations in both RLab and Algae are similar, if not the same in
some places.  The biggest difference is RLab uses the SuperLU package
for factorization, and Algae uses Boeing Computing Services (BCS) sparse
factorization routines.  The BCS routines are _very_ good performers. I
wish I could use them, but they are not allowed outside Boeing (unless
you have a lot of money, I think Cray and MSC license them).

Ian Searle

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