[petsc-users] request suggestions for most appropriate eigenvalue solver

[Giacomo Mulas]

On Wed, 18 Jul 2012, Jose E. Roman wrote:

> Yes, we will try to have this included in the release. I will come back to
> you in a week or so.

Great! I also found an additional paper that describes a modified Davidson
method for finding eigenvectors with the largest component in a given
subspace (non only in one given starting vector, but in the subspace spanned
by possibly more than one), starting from lowest eigenvalues but without
having to get to convergence all eigenvectors in order of eigenvalues.  This
appears to be even closer to what I would want (what I tried to describe in
my initial email):

W. Butscher, W.E. Kammer (1976) Journal of Computational Physics 20, 313

Bye
Giacomo

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Giacomo Mulas <gmulas at oa-cagliari.inaf.it>
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