Add test.

diff --git a/tests/mpi/hp_renumber_01.cc b/tests/mpi/hp_renumber_01.cc
new file mode 100644 (file)
index 0000000..739b306
--- /dev/null
+++ b/tests/mpi/hp_renumber_01.cc
@@ -0,0 +1,128 @@
+// ---------------------------------------------------------------------
+//
+// Copyright (C) 2017 by the deal.II authors
+//
+// This file is part of the deal.II library.
+//
+// The deal.II library is free software; you can use it, redistribute
+// it, and/or modify it under the terms of the GNU Lesser General
+// Public License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+// The full text of the license can be found in the file LICENSE.md at
+// the top level directory of deal.II.
+//
+// ---------------------------------------------------------------------
+
+
+
+// Distribute DoFs as we do in hp_unify_dof_indices_02, but then
+// renumber DoFs. In this test, we use the identity renumbering, i.e.,
+// this does not actually change any DoF indices, but it still runs
+// through the renumbering machinery to verify that things work
+// correctly.
+
+
+#include <deal.II/base/tensor.h>
+#include <deal.II/base/utilities.h>
+
+#include <deal.II/distributed/tria.h>
+
+#include <deal.II/fe/fe_q.h>
+
+#include <deal.II/grid/grid_generator.h>
+#include <deal.II/grid/intergrid_map.h>
+#include <deal.II/grid/tria_accessor.h>
+#include <deal.II/grid/tria_iterator.h>
+
+#include <deal.II/hp/dof_handler.h>
+#include <deal.II/hp/fe_collection.h>
+
+#include <numeric>
+
+#include "../tests.h"
+
+
+template <int dim>
+void
+test()
+{
+  parallel::distributed::Triangulation<dim> triangulation(
+    MPI_COMM_WORLD, Triangulation<dim>::limit_level_difference_at_vertices);
+
+  std::vector<unsigned int> reps(dim, 1U);
+  reps[0] = 2;
+  reps[1] = 2;
+  Point<dim> top_right;
+  for (unsigned int d = 0; d < dim; ++d)
+    top_right[d] = (d == 0 ? 2 : 1);
+  GridGenerator::subdivided_hyper_rectangle(triangulation,
+                                            reps,
+                                            Point<dim>(),
+                                            top_right);
+  Assert(triangulation.n_global_active_cells() == 4, ExcInternalError());
+  Assert(triangulation.n_active_cells() == 4, ExcInternalError());
+
+  hp::FECollection<dim> fe;
+  fe.push_back(FE_Q<dim>(2));
+  fe.push_back(FE_Q<dim>(2));
+  fe.push_back(FE_Q<dim>(2));
+
+  hp::DoFHandler<dim> dof_handler(triangulation);
+  for (auto cell : dof_handler.active_cell_iterators())
+    {
+      if (cell->is_locally_owned())
+        {
+          if (cell->id().to_string() == "0_0:")
+            cell->set_active_fe_index(0);
+          if (cell->id().to_string() == "1_0:")
+            cell->set_active_fe_index(1);
+          if (cell->id().to_string() == "2_0:")
+            cell->set_active_fe_index(2);
+          if (cell->id().to_string() == "3_0:")
+            cell->set_active_fe_index(0);
+        }
+    }
+  dof_handler.distribute_dofs(fe);
+
+  // now do the identity renumbering
+  const IndexSet locally_owned_dofs = dof_handler.locally_owned_dofs();
+  std::vector<types::global_dof_index> new_indices(
+    locally_owned_dofs.n_elements());
+  for (unsigned int i = 0; i < new_indices.size(); ++i)
+    new_indices[i] = locally_owned_dofs.nth_index_in_set(i);
+  dof_handler.renumber_dofs(new_indices);
+
+  deallog << "Processor: " << Utilities::MPI::this_mpi_process(MPI_COMM_WORLD)
+          << std::endl;
+  for (auto cell : dof_handler.active_cell_iterators())
+    {
+      deallog << "  Cell: " << cell << std::endl;
+
+      std::vector<types::global_dof_index> dof_indices(
+        cell->get_fe().dofs_per_cell);
+      cell->get_dof_indices(dof_indices);
+      deallog << "    ";
+      for (auto i : dof_indices)
+        deallog << i << ' ';
+      deallog << std::endl;
+    }
+  deallog << "  n_locally_owned_dofs: " << dof_handler.n_locally_owned_dofs()
+          << std::endl;
+  deallog << "  n_global_dofs: " << dof_handler.n_dofs() << std::endl;
+}
+
+
+int
+main(int argc, char *argv[])
+{
+  Utilities::MPI::MPI_InitFinalize mpi_initialization(argc, argv, 1);
+  MPILogInitAll                    log;
+
+  deallog.push("2d");
+  test<2>();
+  deallog.pop();
+
+  deallog.push("3d");
+  test<3>();
+  deallog.pop();
+}

diff --git a/tests/mpi/hp_renumber_01.mpirun=2.output b/tests/mpi/hp_renumber_01.mpirun=2.output
new file mode 100644 (file)
index 0000000..c872110
--- /dev/null
+++ b/tests/mpi/hp_renumber_01.mpirun=2.output
@@ -0,0 +1,47 @@
+
+DEAL:0:2d::Processor: 0
+DEAL:0:2d::  Cell: 0.0
+DEAL:0:2d::    0 1 2 3 4 5 6 7 8 
+DEAL:0:2d::  Cell: 0.1
+DEAL:0:2d::    1 9 3 19 5 10 11 12 13 
+DEAL:0:2d::  Cell: 0.2
+DEAL:0:2d::    2 3 14 20 15 16 7 17 18 
+DEAL:0:2d::  Cell: 0.3
+DEAL:0:2d::    3 19 20 21 16 22 12 23 24 
+DEAL:0:2d::  n_locally_owned_dofs: 14
+DEAL:0:2d::  n_global_dofs: 25
+DEAL:0:3d::Processor: 0
+DEAL:0:3d::  Cell: 0.0
+DEAL:0:3d::    0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 
+DEAL:0:3d::  Cell: 0.1
+DEAL:0:3d::    1 27 3 53 5 28 7 56 9 29 30 61 13 31 32 65 17 33 19 67 21 34 35 36 37 38 39 
+DEAL:0:3d::  Cell: 0.2
+DEAL:0:3d::    2 3 40 54 6 7 41 57 42 59 11 43 44 63 15 45 18 19 46 68 47 48 23 49 50 51 52 
+DEAL:0:3d::  Cell: 0.3
+DEAL:0:3d::    3 53 54 55 7 56 57 58 59 60 61 62 63 64 65 66 19 67 68 69 48 70 36 71 72 73 74 
+DEAL:0:3d::  n_locally_owned_dofs: 40
+DEAL:0:3d::  n_global_dofs: 75
+
+DEAL:1:2d::Processor: 1
+DEAL:1:2d::  Cell: 0.0
+DEAL:1:2d::    0 1 2 3 4 5 6 7 8 
+DEAL:1:2d::  Cell: 0.1
+DEAL:1:2d::    1 9 3 19 5 10 11 12 13 
+DEAL:1:2d::  Cell: 0.2
+DEAL:1:2d::    2 3 14 20 15 16 7 17 18 
+DEAL:1:2d::  Cell: 0.3
+DEAL:1:2d::    3 19 20 21 16 22 12 23 24 
+DEAL:1:2d::  n_locally_owned_dofs: 11
+DEAL:1:2d::  n_global_dofs: 25
+DEAL:1:3d::Processor: 1
+DEAL:1:3d::  Cell: 0.0
+DEAL:1:3d::    0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 
+DEAL:1:3d::  Cell: 0.1
+DEAL:1:3d::    1 27 3 53 5 28 7 56 9 29 30 61 13 31 32 65 17 33 19 67 21 34 35 36 37 38 39 
+DEAL:1:3d::  Cell: 0.2
+DEAL:1:3d::    2 3 40 54 6 7 41 57 42 59 11 43 44 63 15 45 18 19 46 68 47 48 23 49 50 51 52 
+DEAL:1:3d::  Cell: 0.3
+DEAL:1:3d::    3 53 54 55 7 56 57 58 59 60 61 62 63 64 65 66 19 67 68 69 48 70 36 71 72 73 74 
+DEAL:1:3d::  n_locally_owned_dofs: 35
+DEAL:1:3d::  n_global_dofs: 75
+