Hi everyone, the coupling matrix (non_matching::coupling_matrix) obtained with parallel meshes is (practically) guaranteed to have and IndexSet which is not compatible with the original ones, as the matrix is obtained multiplying base functions from two indipendent different spaces, while all other sensible matrices (e.g. mass matrix) are computed using a functions from a single space. This is a problem as the basic matrix operations ( + and * ) are not possible (at least using TrilinosWarppers::linear_operator).
As a solution, I was thinking about implementing a function which, given a sparse matrix with incompatible indices and the "wished" IndexSet, makes a global communication to generate a "compatible" matrix. Is this reasonable? Are the better approaches? Or maybe Trilinos can already handle this situation and it is only a matter of implementation in deal.II? Thank you. Best, Giovanni -- 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]. For more options, visit https://groups.google.com/d/optout.
