--- /dev/null
+//---------------------------- trilinos_ghost_03_linfty.cc ---------------------------
+// $Id: vector_equality_4.cc 17992 2008-12-18 03:03:20Z bangerth $
+// Version: $Name$
+//
+// Copyright (C) 2004, 2005, 2008, 2010 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.
+//
+//---------------------------- trilinos_ghost_03_linfty.cc ---------------------------
+
+
+// while computing the l2norm on ghosted vectors is unsafe, computing
+// the linfty norm should be ok. test this
+
+#include "../tests.h"
+#include <base/utilities.h>
+#include <base/index_set.h>
+#include <lac/trilinos_vector.h>
+#include <fstream>
+#include <iostream>
+#include <vector>
+
+
+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);
+
+ 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 = local_active;
+ local_relevant.add_range(1,2);
+
+ TrilinosWrappers::MPI::Vector v(local_active, MPI_COMM_WORLD);
+ TrilinosWrappers::MPI::Vector v_tmp(local_relevant, MPI_COMM_WORLD);
+
+
+ // set local values
+ v(myid*2)=myid*2;
+ v(myid*2+1)=myid*2+1;
+
+ v.compress();
+
+ v_tmp.reinit(v,false,true);
+
+ deal_II_exceptions::disable_abort_on_exception();
+
+ bool exc = false;
+ double norm;
+ try
+ {
+ norm = v_tmp.linfty_norm();
+ }
+ catch (TrilinosWrappers::VectorBase::ExcTrilinosError e)
+ {
+ exc = true;
+ }
+
+ Assert (exc == false, ExcInternalError());
+ Assert (norm == 2.*Utilities::System::get_n_mpi_processes (MPI_COMM_WORLD)-1,
+ ExcInternalError());
+ if (Utilities::System::get_this_mpi_process (MPI_COMM_WORLD) == 0)
+ {
+ deallog << norm << std::endl;
+ deallog << "OK" << std::endl;
+ }
+}
+
+
+
+int main (int argc, char **argv)
+{
+ Utilities::System::MPI_InitFinalize mpi_initialization(argc, argv);
+
+ 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("trilinos_ghost_03_linfty").c_str());
+ deallog.attach(logfile);
+ deallog << std::setprecision(4);
+ deallog.depth_console(0);
+ deallog.threshold_double(1.e-10);
+
+ test();
+ }
+ else
+ test();
+
+}