--- /dev/null
+// ---------------------------------------------------------------------
+//
+// Copyright (C) 2004 - 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.
+//
+// ---------------------------------------------------------------------
+
+
+
+// test v=0 for ghost vectors
+
+#include "../tests.h"
+#include <deal.II/lac/generic_linear_algebra.h>
+#include <deal.II/base/index_set.h>
+#include <deal.II/lac/constraint_matrix.h>
+#include <fstream>
+#include <iostream>
+#include <iomanip>
+#include <vector>
+
+#include "gla.h"
+
+template <class LA>
+void test ()
+{
+ unsigned int myid = Utilities::MPI::this_mpi_process (MPI_COMM_WORLD);
+ unsigned int numproc = Utilities::MPI::n_mpi_processes (MPI_COMM_WORLD);
+
+ if (myid==0)
+ deallog << "numproc=" << numproc << std::endl;
+
+ // each processor owns 2 indices and all
+ // are ghosting Element 1 (the second)
+
+ IndexSet local_active(numproc*2);
+ local_active.add_range(myid*2,myid*2+2);
+ IndexSet local_relevant(numproc*2);
+ local_relevant.add_range(1,2);
+
+ typename LA::MPI::Vector vb(local_active, MPI_COMM_WORLD);
+ typename LA::MPI::Vector v(local_active, local_relevant, MPI_COMM_WORLD);
+
+ vb = 1.0;
+
+ // set local values
+ vb(myid*2)=myid*2.0;
+ vb(myid*2+1)=myid*2.0+1.0;
+
+ vb.compress(VectorOperation::insert);
+ vb*=2.0;
+ v=vb;
+ Assert(v.has_ghost_elements(), ExcInternalError());
+
+ deallog << "ghosted value: " << v(1) << " (should be 2.0)" << std::endl;
+ v=0;
+ deallog << "ghosted value: " << v(1) << " (should be 0.0)" << std::endl;
+ v=42.1;
+ deallog << "ghosted value: " << v(1) << " (should be 42.1)" << std::endl;
+
+ // done
+ if (myid==0)
+ deallog << "OK" << std::endl;
+}
+
+
+
+int main (int argc, char **argv)
+{
+ Utilities::MPI::MPI_InitFinalize mpi_initialization(argc, argv, 1);
+ MPILogInitAll log;
+ {
+ deallog.push("PETSc");
+ test<LA_PETSc>();
+ deallog.pop();
+ deallog.push("Trilinos");
+ test<LA_Trilinos>();
+ deallog.pop();
+ }
+
+}
--- /dev/null
+
+DEAL:0:PETSc::numproc=4
+DEAL:0:PETSc::ghosted value: 2.00000 (should be 2.0)
+DEAL:0:PETSc::ghosted value: 0.00000 (should be 0.0)
+DEAL:0:PETSc::ghosted value: 42.1000 (should be 42.1)
+DEAL:0:PETSc::OK
+DEAL:0:Trilinos::numproc=4
+DEAL:0:Trilinos::ghosted value: 2.00000 (should be 2.0)
+DEAL:0:Trilinos::ghosted value: 0.00000 (should be 0.0)
+DEAL:0:Trilinos::ghosted value: 42.1000 (should be 42.1)
+DEAL:0:Trilinos::OK
+
+DEAL:1:PETSc::ghosted value: 2.00000 (should be 2.0)
+DEAL:1:PETSc::ghosted value: 0.00000 (should be 0.0)
+DEAL:1:PETSc::ghosted value: 42.1000 (should be 42.1)
+DEAL:1:Trilinos::ghosted value: 2.00000 (should be 2.0)
+DEAL:1:Trilinos::ghosted value: 0.00000 (should be 0.0)
+DEAL:1:Trilinos::ghosted value: 42.1000 (should be 42.1)
+
+
+DEAL:2:PETSc::ghosted value: 2.00000 (should be 2.0)
+DEAL:2:PETSc::ghosted value: 0.00000 (should be 0.0)
+DEAL:2:PETSc::ghosted value: 42.1000 (should be 42.1)
+DEAL:2:Trilinos::ghosted value: 2.00000 (should be 2.0)
+DEAL:2:Trilinos::ghosted value: 0.00000 (should be 0.0)
+DEAL:2:Trilinos::ghosted value: 42.1000 (should be 42.1)
+
+
+DEAL:3:PETSc::ghosted value: 2.00000 (should be 2.0)
+DEAL:3:PETSc::ghosted value: 0.00000 (should be 0.0)
+DEAL:3:PETSc::ghosted value: 42.1000 (should be 42.1)
+DEAL:3:Trilinos::ghosted value: 2.00000 (should be 2.0)
+DEAL:3:Trilinos::ghosted value: 0.00000 (should be 0.0)
+DEAL:3:Trilinos::ghosted value: 42.1000 (should be 42.1)
+