[SciPy-User] solving large sparse linear system with Laplacian matrix
Fri Oct 30 03:43:23 CDT 2009
On 30-Oct-09, at 4:25 AM, firstname.lastname@example.org wrote:
> I don't know about memory consumption but I think
> should be more efficient if you need to solve for several right hand
You may be right but the factorized matrices may be an awful lot
denser which could impact her memory requirements.
You may have some luck with lgmres and/or bicg, as far as I know
neither imposes conditions on positive definiteness.
You might also look at http://code.google.com/p/pyamg/ - they have a
lot of other methods implemented, possibly some specially optimized
for symmetric banded matrices.
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