[petsc-dev] General Advice for Solving SVD and Eigenvalue problems using SLEPc

[Jed Brown]

Chris Eldred <chris.eldred at gmail.com> writes:
> 3) Is it worthwhile to use a non-sparse (dense) solver library
> (something like Elemental?) since I need to construct the entire
> eigenspace anyways?

The matrix of eigenvectors is dense so you'll end up doing this much
work anyway.  Your problems are not so terribly large, so I would use
Elemental's eigensolvers.

If you need to solve problems that are a great deal larger, I would
seriously reconsider the "need" for a complete eigenspace.
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