void LaplaceProblem<dim>::get_point_value
(const Point<dim> point, const int proc, Vector<double> &value) const
{
- std::vector<double> tmp (value.size());
- try
- {
+ typename DoFHandler<dim>::active_cell_iterator cell
+ = GridTools::find_active_cell_around_point (dof_handler, point);
+
+ if (cell->is_locally_owned())
VectorTools::point_value (dof_handler, locally_relevant_solution,
point, value);
- for (unsigned int i=0; i<value.size(); ++i)
- tmp[i]=value[i];
- }
- catch (const VectorTools::ExcPointNotAvailableHere &)
- {}
+
+ std::vector<double> tmp (value.size());
+ for (unsigned int i=0; i<value.size(); ++i)
+ tmp[i]=value[i];
std::vector<double> tmp2 (value.size());
MPI_Reduce(&(tmp[0]), &(tmp2[0]), value.size(), MPI_DOUBLE,
(triangulation,
/*b_id1*/ 2*i, /*b_id2*/2*i+1, /*direction*/ i,
periodicity_vector);
-
+
triangulation.add_periodicity(periodicity_vector);
-
+
triangulation.refine_global (1);
}
else
--- /dev/null
+// ---------------------------------------------------------------------
+// $Id: point_value_01.cc $
+//
+// Copyright (C) 2001 - 2013 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 at
+// the top level of the deal.II distribution.
+//
+// ---------------------------------------------------------------------
+
+//
+// Checks whether VectorTools::point_value shows the expected behavior on
+// distributed meshes. If the point is locally available everything should be
+// fine, else the exception ExcPointNotAvailableHere should be thrown.
+//
+
+#include "../tests.h"
+#include <deal.II/base/conditional_ostream.h>
+#include <deal.II/base/index_set.h>
+
+#include <deal.II/lac/parallel_vector.h>
+
+#include <deal.II/grid/grid_generator.h>
+#include <deal.II/grid/tria_accessor.h>
+#include <deal.II/grid/tria_iterator.h>
+
+#include <deal.II/dofs/dof_handler.h>
+#include <deal.II/dofs/dof_accessor.h>
+#include <deal.II/dofs/dof_tools.h>
+#include <deal.II/fe/fe_values.h>
+#include <deal.II/fe/fe_q.h>
+
+#include <deal.II/numerics/vector_tools.h>
+
+#include <deal.II/distributed/tria.h>
+#include <deal.II/distributed/grid_refinement.h>
+
+#include <fstream>
+#include <iostream>
+
+template<int dim>
+void test()
+{
+ parallel::distributed::Triangulation<dim> triangulation(MPI_COMM_WORLD);
+
+ FE_Q<dim> fe(1);
+
+ DoFHandler<dim> dof_handler (triangulation);
+
+ GridGenerator::hyper_cube(triangulation);
+ triangulation.refine_global (1);
+
+ dof_handler.distribute_dofs (fe);
+
+ IndexSet locally_owned_dofs = dof_handler.locally_owned_dofs ();
+ parallel::distributed::Vector<double> locally_owned_solution
+ (locally_owned_dofs, MPI_COMM_WORLD);
+
+ locally_owned_solution=1;
+
+ std::vector<Point<dim> > points;
+
+ for (int i=0; i<2; i++)
+ for (int j=0; j<2; j++)
+ if (dim==3)
+ for (int k=0; k<2; k++)
+ points.push_back(Point<dim>(.25+.5*i,.25+.5*j,.25+.5*k));
+ else
+ points.push_back(Point<dim>(.25+.5*i,.25+.5*j));
+
+ typename std::vector<Point<dim> >::iterator point_iterator, points_end;
+ point_iterator=points.begin();
+ points_end=points.end();
+
+ Vector<double> value(1);
+
+ for(; point_iterator!=points_end; point_iterator++)
+ {
+ try
+ {
+ VectorTools::point_value (dof_handler, locally_owned_solution,
+ *point_iterator, value);
+ if (std::abs(value[0]-1.)>1e-8)
+ ExcInternalError();
+ }
+ catch (const VectorTools::ExcPointNotAvailableHere &)
+ {}
+
+ MPI_Barrier(MPI_COMM_WORLD);
+
+ if (Utilities::MPI::this_mpi_process (MPI_COMM_WORLD) == 0)
+ deallog << *point_iterator << " OK" << std::endl;
+ }
+}
+
+
+int main(int argc, char *argv[])
+{
+ Utilities::MPI::MPI_InitFinalize mpi_initialization(argc, argv, 1);
+
+ unsigned int myid = Utilities::MPI::this_mpi_process (MPI_COMM_WORLD);
+ if (myid == 0)
+ {
+ std::ofstream logfile(output_file_for_mpi("point_value_01").c_str());
+ deallog.attach(logfile, false);
+ 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>();
+ }
+
+ return 0;
+}
+
projects / dealii-svn.git / commitdiff