Hello, I'm running matrix free calculations using a parallel::distributed::Triangulation (loosely based on step-48). One thing that I've noticed is the the final number of DOFs at the end of a simulation vary slightly depending on my number of MPI processes. For example, one run on 16 cores finished with 2,988,700 DOF and nominally the same run on 512 cores finished with 2,988,864. Is this to be expected? My working assumption has been that there are a number of heuristics that go into "smoothing" the refinement of the mesh and that some/all of these only operate on the local part of the mesh. Is that the case? Or should I be concerned that I have a subtle issue in my code? Nothing changes qualitatively between simulations with different numbers of cores, but of course there is a very small difference in the solutions due to the different meshes.
Thanks, Steve -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/986ee9b7-6d3d-4991-a919-53d1bc117d26%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
