Thank you so much Jean-Paul. I was able to use SolverCG::connect_condition_number_slot() successfully in my code.
Best, Reza On Thursday, December 3, 2020 at 10:57:23 AM UTC-8 Jean-Paul Pelteret wrote: > If it's of any help, our CG and GMRES solvers (and maybe some of the > others?) can return the estimated condition number during / after a call > to solve(). > > https://dealii.org/developer/doxygen/deal.II/classSolverCG.html#a52f1fd3d41765ec06d2d0add1a74a37c > > < > https://dealii.org/developer/doxygen/deal.II/classSolverCG.html#a52f1fd3d41765ec06d2d0add1a74a37c > > > > https://dealii.org/developer/doxygen/deal.II/classSolverGMRES.html#a3025d81c3d7db3e1a1b0114bef794202 > > < > https://dealii.org/developer/doxygen/deal.II/classSolverGMRES.html#a3025d81c3d7db3e1a1b0114bef794202 > > > > Jean-Paul > > On 03.12.20 05:46, Wolfgang Bangerth wrote: > > On 12/2/20 9:30 PM, Reza Rastak wrote: > >> > >> I am trying to calculate the condition number of a Trilinos Block > >> Sparse matrix. Is there an example of that in the documentation that > >> you can point me to? > > > > No, and that's actually a quite difficult task because you have to > > estimate eigenvalues. The easiest way is probably to use the power > > iteration and inverse power iteration to estimate largest and smallest > > eigenvalues -- see the EigenPower and EigenInverse classes. > > > > Best > > W. > > > > -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/9f45c49f-19e4-4a06-85d6-a187e1a9033en%40googlegroups.com.
