--- /dev/null
+//---------------------------------------------------------------------------
+// $Id$
+// Version: $Name$
+//
+// Copyright (C) 2009, 2010, 2011 by the deal.II authors
+//
+// This file is subject to QPL and may not be distributed
+// without copyright and license information. Please refer
+// to the file deal.II/doc/license.html for the text and
+// further information on this license.
+//
+//---------------------------------------------------------------------------
+
+
+// check VectorTools::interpolate had trouble when one involved processor had
+// no locally owned cells
+
+#include "../tests.h"
+#include "coarse_grid_common.h"
+#include <deal.II/base/logstream.h>
+#include <deal.II/base/tensor.h>
+#include <deal.II/base/function.h>
+#include <deal.II/numerics/vectors.h>
+#include <deal.II/grid/filtered_iterator.h>
+
+#include <deal.II/grid/tria.h>
+#include <deal.II/distributed/tria.h>
+#include <deal.II/grid/grid_generator.h>
+#include <deal.II/grid/grid_out.h>
+#include <deal.II/dofs/dof_handler.h>
+#include <deal.II/dofs/dof_handler.h>
+#include <deal.II/dofs/dof_tools.h>
+#include <deal.II/grid/tria_accessor.h>
+#include <deal.II/grid/tria_iterator.h>
+#include <deal.II/dofs/dof_accessor.h>
+#include <deal.II/grid/tria_boundary_lib.h>
+#include <deal.II/numerics/data_out.h>
+#include <deal.II/lac/trilinos_vector.h>
+
+#include <deal.II/fe/fe_q.h>
+#include <deal.II/fe/fe_system.h>
+
+#include <fstream>
+#include <sstream>
+
+
+template<int dim>
+void test()
+{
+ unsigned int myid = Utilities::System::get_this_mpi_process (MPI_COMM_WORLD);
+ unsigned int numproc = Utilities::System::get_n_mpi_processes (MPI_COMM_WORLD);
+
+ // create a mesh so that all but one
+ // processor are empty
+ parallel::distributed::Triangulation<dim> tr(MPI_COMM_WORLD);
+ GridGenerator::hyper_cube (tr);
+ FE_Q<dim> fe (1);
+ DoFHandler<dim> dofh(tr);
+ dofh.distribute_dofs (fe);
+
+ IndexSet owned_set = dofh.locally_owned_dofs();
+ TrilinosWrappers::MPI::Vector x;
+ x.reinit(owned_set, MPI_COMM_WORLD);
+
+ VectorTools::interpolate(dofh,
+ ConstantFunction<dim>(1),
+ x);
+ if (myid == 0)
+ deallog << dofh.n_locally_owned_dofs() << ' ' << dofh.n_dofs()
+ << std::endl
+ << x.l2_norm()
+ << std::endl;
+}
+
+
+int main(int argc, char *argv[])
+{
+#ifdef DEAL_II_COMPILER_SUPPORTS_MPI
+ MPI_Init (&argc,&argv);
+#else
+ (void)argc;
+ (void)argv;
+#endif
+
+ unsigned int myid = Utilities::System::get_this_mpi_process (MPI_COMM_WORLD);
+
+
+ deallog.push(Utilities::int_to_string(myid));
+
+ if (myid == 0)
+ {
+ std::ofstream logfile(output_file_for_mpi("interpolate_boundary_values_01").c_str());
+ deallog.attach(logfile);
+ deallog.depth_console(0);
+ deallog.threshold_double(1.e-10);
+
+ deallog.push("2d");
+ test<2>();
+ deallog.pop();
+ deallog.push("3d");
+ test<3>();
+ deallog.pop();
+ }
+ else
+ {
+ test<2>();
+ test<3>();
+ }
+
+#ifdef DEAL_II_COMPILER_SUPPORTS_MPI
+ MPI_Finalize();
+#endif
+}