> The way to deal with the sparsity pattern is to "simulate" what entries > you > would produce in the mmult, add them to the sparsity pattern, attach a > matrix, > and then do the whole thing again but this time actually put the entries > into > the matrix. > That's exactly what this github issue <https://github.com/dealii/dealii/issues/5598> is about, right?
> As for the missing mmult function: There is nothing wrong in proposing a > patch > to the wrapper classes I'd like to give it a try. I am not quite familiar with PETSc itself, just to get me started, even with mmult do we still require the dst matrix to have a correct or at least similar sparsity pattern beforehand, right? I should probably find some PETSc mmult examples first. -- 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 dealii+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
