From 4072d94883a66d3c460191ea297f55f8908049ac Mon Sep 17 00:00:00 2001
From: Timo Heister <timo.heister@gmail.com>
Date: Tue, 14 Oct 2014 15:53:10 -0400
Subject: [PATCH] add failing test for ghosted vectors

---
 tests/gla/vec_07.cc              | 88 ++++++++++++++++++++++++++++++++
 tests/gla/vec_07.mpirun=4.output | 35 +++++++++++++
 2 files changed, 123 insertions(+)
 create mode 100644 tests/gla/vec_07.cc
 create mode 100644 tests/gla/vec_07.mpirun=4.output

diff --git a/tests/gla/vec_07.cc b/tests/gla/vec_07.cc
new file mode 100644
index 0000000000..4dfaccb11e
--- /dev/null
+++ b/tests/gla/vec_07.cc
@@ -0,0 +1,88 @@
+// ---------------------------------------------------------------------
+//
+// 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();
+  }
+
+}
diff --git a/tests/gla/vec_07.mpirun=4.output b/tests/gla/vec_07.mpirun=4.output
new file mode 100644
index 0000000000..01b78d053e
--- /dev/null
+++ b/tests/gla/vec_07.mpirun=4.output
@@ -0,0 +1,35 @@
+
+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)
+
-- 
2.39.5