Hi Roy, Thank you very much for your reply. I do have a single VariableGroup.
Best, Harshad On Mon, May 7, 2018 at 5:45 PM, Roy Stogner <royst...@ices.utexas.edu> wrote: > > On Mon, 7 May 2018, Harshad Sahasrabudhe wrote: > > I need to add a group of variables to my CondensedEigenSystem. My current >> code handles a single variable. What would be the shortest way to update >> my >> code to accommodate the variable group? I would like the PetscMatrix to be >> block sparse with a node major ordering. What should I set in DofMap in >> the >> code to get this done without using the " --node_major_dofs " command line >> option? >> > > If you add variables which are all of the exact same FE type and > subdomain restriction, and you add them consecutively without any > variables of different types in between, and if you haven't manually > disabled System::identify_variable_groups(), then libMesh should put > them all in the same VariableGroup. If you *only* have one > VariableGroup after everything is added, then the matrix ordering ends > up looking like node_major_dofs. > > If you have different variable types or subdomain restrictions, then > right now I believe the only way to get node_major_dofs ordering is > --node_major_dofs. A patch adding a programmatic control option would > certainly be appreciated. > --- > Roy > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
