Replace MPI_COMM_WORLD by mpi_communicator

diff --git a/examples/step-50/step-50.cc b/examples/step-50/step-50.cc
index 8b4f490018186eccb038899937aeeaaf23f3bfe8..c42006da713bafad90c327401a22201365b480a4 100644 (file)
--- a/examples/step-50/step-50.cc
+++ b/examples/step-50/step-50.cc
@@ -547,7 +547,7 @@ void LaplaceProblem<dim, degree>::setup_system()
           TrilinosWrappers::SparsityPattern dsp(locally_owned_dofs,
                                                 locally_owned_dofs,
                                                 locally_relevant_dofs,
-                                                MPI_COMM_WORLD);
+                                                mpi_communicator);
           DoFTools::make_sparsity_pattern(dof_handler, dsp, constraints);
           dsp.compress();
           system_matrix.reinit(dsp);