Add test

diff --git a/tests/distributed_grids/solution_transfer_05.cc b/tests/distributed_grids/solution_transfer_05.cc
new file mode 100644 (file)
index 0000000..e021b80
--- /dev/null
+++ b/tests/distributed_grids/solution_transfer_05.cc
@@ -0,0 +1,95 @@
+// ---------------------------------------------------------------------
+//
+// Copyright (C) 2022 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.
+//
+// ---------------------------------------------------------------------
+
+
+
+// test distributed solution_transfer with averaging (without averaging the
+// program fails)
+
+#include <deal.II/base/mpi.h>
+
+#include <deal.II/distributed/solution_transfer.h>
+#include <deal.II/distributed/tria.h>
+
+#include <deal.II/dofs/dof_handler.h>
+#include <deal.II/dofs/dof_tools.h>
+
+#include <deal.II/fe/fe_q.h>
+
+#include <deal.II/grid/grid_generator.h>
+
+#include "../tests.h"
+
+using namespace dealii;
+
+int
+main(int argc, char **argv)
+{
+  constexpr unsigned int dim    = 2;
+  constexpr unsigned int degree = 1;
+  using Number                  = double;
+
+  Utilities::MPI::MPI_InitFinalize mpi_init(argc, argv, 1);
+  MPILogInitAll                    all;
+
+  parallel::distributed::Triangulation<dim> tria(MPI_COMM_WORLD);
+  GridGenerator::subdivided_hyper_rectangle(tria,
+                                            {2, 1},
+                                            {0., 0.0},
+                                            {2.0, 1.0});
+  if (tria.create_cell_iterator(CellId("0_0:"))->is_locally_owned())
+    tria.create_cell_iterator(CellId("0_0:"))->set_refine_flag();
+  tria.execute_coarsening_and_refinement();
+
+  DoFHandler<dim> dof_handler(tria);
+  dof_handler.distribute_dofs(FE_Q<dim>(degree));
+
+  LinearAlgebra::distributed::Vector<Number> v;
+  v.reinit(dof_handler.locally_owned_dofs(),
+           DoFTools::extract_locally_relevant_dofs(dof_handler),
+           MPI_COMM_WORLD);
+
+  std::map<CellId, Vector<double>> values;
+  values[CellId("1_0:")]  = Vector<double>{0.5, 0.5, 0.5, 0.5};
+  values[CellId("0_1:0")] = Vector<double>{0.5, 0.5, 0.5, 0.5};
+  values[CellId("0_1:1")] = Vector<double>{0.5, 0.5, 0.5, 0.1};
+  values[CellId("0_1:2")] = Vector<double>{0.5, 0.5, 0.5, 0.5};
+  values[CellId("0_1:3")] = Vector<double>{0.5, 0.1, 0.5, 0.5};
+
+  for (const auto cell : dof_handler.active_cell_iterators())
+    if (cell->is_artificial() == false)
+      cell->set_dof_values(values[cell->id()], v);
+
+  v.print(deallog.get_file_stream());
+
+  parallel::distributed::
+    SolutionTransfer<dim, LinearAlgebra::distributed::Vector<Number>>
+      solution_trans(dof_handler, true /*enabling averaging*/);
+
+  v.update_ghost_values();
+  solution_trans.prepare_for_coarsening_and_refinement(v);
+
+  if (tria.create_cell_iterator(CellId("1_0:"))->is_locally_owned())
+    tria.create_cell_iterator(CellId("1_0:"))->set_refine_flag();
+  tria.execute_coarsening_and_refinement();
+
+  dof_handler.distribute_dofs(FE_Q<dim>(degree));
+  v.reinit(dof_handler.locally_owned_dofs(),
+           DoFTools::extract_locally_relevant_dofs(dof_handler),
+           MPI_COMM_WORLD);
+  solution_trans.interpolate(v);
+
+  v.print(deallog.get_file_stream());
+}

diff --git a/tests/distributed_grids/solution_transfer_05.mpirun=1.with_p4est=true.output b/tests/distributed_grids/solution_transfer_05.mpirun=1.with_p4est=true.output
new file mode 100644 (file)
index 0000000..d332aac
--- /dev/null
+++ b/tests/distributed_grids/solution_transfer_05.mpirun=1.with_p4est=true.output
@@ -0,0 +1,9 @@
+
+Process #0
+Local range: [0, 11), global size: 11
+Vector data:
+5.000e-01 5.000e-01 5.000e-01 5.000e-01 5.000e-01 5.000e-01 5.000e-01 5.000e-01 1.000e-01 5.000e-01 5.000e-01 
+Process #0
+Local range: [0, 15), global size: 15
+Vector data:
+5.000e-01 5.000e-01 5.000e-01 5.000e-01 5.000e-01 3.000e-01 5.000e-01 5.000e-01 5.000e-01 5.000e-01 5.000e-01 5.000e-01 5.000e-01 5.000e-01 5.000e-01 

diff --git a/tests/distributed_grids/solution_transfer_05.mpirun=2.with_p4est=true.output b/tests/distributed_grids/solution_transfer_05.mpirun=2.with_p4est=true.output
new file mode 100644 (file)
index 0000000..728762d
--- /dev/null
+++ b/tests/distributed_grids/solution_transfer_05.mpirun=2.with_p4est=true.output
@@ -0,0 +1,19 @@
+
+Process #0
+Local range: [0, 9), global size: 11
+Vector data:
+5.000e-01 5.000e-01 5.000e-01 5.000e-01 5.000e-01 1.000e-01 5.000e-01 5.000e-01 5.000e-01 
+Process #0
+Local range: [0, 9), global size: 15
+Vector data:
+5.000e-01 5.000e-01 5.000e-01 5.000e-01 5.000e-01 3.000e-01 5.000e-01 5.000e-01 5.000e-01 
+
+Process #1
+Local range: [9, 11), global size: 11
+Vector data:
+5.000e-01 5.000e-01 
+Process #1
+Local range: [9, 15), global size: 15
+Vector data:
+5.000e-01 5.000e-01 5.000e-01 5.000e-01 5.000e-01 5.000e-01 
+