dolfin team mailing list archive

["Garth N. Wells" <g.n.wells@xxxxxxxxxxxxxxx>]

At the moment it computes all eigenvalues directly, so it's limited to small
systems. I'll add a wrapper function to PETSc which computes a limited number of
eigenvalues (largest/smallest) approximately which can be used for large systems.

Garth


Quoting jhoffman@xxxxxxxxxxx:

> Good job Garth! It'll become very handy for me too in another setting
> connected to hydrodynamic stability.
> 
> /Johan
> 
> > Great. I'm planning to add a Maxwell/Helmholtz solver once I get the
> > Nedelec elements into FFC. Then this will be very useful.
> >
> > /Anders
> >
> > On Thu, Sep 01, 2005 at 01:19:57AM +0200, Garth N. Wells wrote:
> >> I've added a class EigenvalueSolver and removed the eigenvalue function
> >> from the
> >> class GMRES.
> >>
> >> To use it,
> >>
> >> Vector EigenReal, EigenComplex;
> >> EigenvalueSolver esolve;
> >>
> >> // Return all eigenvalues of the matrix A in the vectors
> >> // EigenReal (real component) and EigenComplex (complex component)
> >> esolve.eigen(A, EigenReal, EigenComplex);
> >>
> >> Garth
> >>
> >>
> >>
> >> _______________________________________________
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> >>
> >
> > --
> > Anders Logg
> > Research Assistant Professor
> > Toyota Technological Institute at Chicago
> > http://www.tti-c.org/logg/
> >
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> >
> 
> 
> 
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