Re: Who uses clapack?

From: Victor Eijkhout (see.sig_at_for.addy)
Date: 12/10/04 

Date: Fri, 10 Dec 2004 14:51:17 -0500

Bill Shortall <pecos@cminet.net> wrote:

> For the last few years I have been working on a
> set of C++ classes to do linear algebra. I was trying to
> acheive most of the functionality of Lapack/Blas but
> in a very user friendly fashion. The classes center
> arround a general purpose vector class along with a dense rectangular Matrix
> class and then some more compilcated classes like a vector of vectors and
> vector of matrices.

Bill,

please mail me a pointer to your software.

However, without wanting to be disrespectful of your software, I wonder
if this is such a wise approach. Lapack is a high quality code base that
supports several data formats: dense, symmetric, banded, tridiagonal.
There is use for that, so before you can state

> Once you've used it
> you will never go back to LAPACK

you have to duplicate a lot of that functionality.

Then, Lapack has (especially in the eigenvalue part) state of the art
algorithms. The people coming up with the best algorithms are
implementing them straight in Lapack. What eigenvalue algorithms do you
use? Condition estimation, iterative refinement, et cetera.

V. 

-- 
email: lastname at cs utk edu
homepage: www cs utk edu tilde lastname

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