From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Thu, 6 Jul 2017 20:02:21 +0000 (-0600)
Subject: Add a shared::tria test where one processor has no cells.
X-Git-Tag: v9.0.0-rc1~1441^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ebe87ca947c9e039ca76f21f9261696dba9609c5;p=dealii.git

Add a shared::tria test where one processor has no cells.
---

diff --git a/tests/sharedtria/no_cells_01.cc b/tests/sharedtria/no_cells_01.cc
new file mode 100644
index 0000000000..95699292b3
--- /dev/null
+++ b/tests/sharedtria/no_cells_01.cc
@@ -0,0 +1,125 @@
+// ---------------------------------------------------------------------
+//
+// Copyright (C) 2017 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.
+//
+// ---------------------------------------------------------------------
+
+
+
+// check that everything is ok when we have a triangulation that has
+// fewer cells than there are processors
+//
+// this test is run with sufficiently many processors so that there
+// are idle processors in 1d, 2d, and 3d
+
+
+#include "../tests.h"
+#include <deal.II/base/logstream.h>
+#include <deal.II/base/tensor.h>
+#include <deal.II/distributed/shared_tria.h>
+#include <deal.II/grid/tria_accessor.h>
+#include <deal.II/grid/tria_iterator.h>
+#include <deal.II/grid/grid_generator.h>
+#include <deal.II/grid/intergrid_map.h>
+#include <deal.II/base/utilities.h>
+#include <deal.II/dofs/dof_handler.h>
+#include <deal.II/fe/fe_system.h>
+#include <deal.II/fe/fe_q.h>
+#include <deal.II/fe/fe_dgq.h>
+
+#include <fstream>
+#include <cstdlib>
+#include <numeric>
+
+
+template <int dim>
+void test()
+{
+  parallel::shared::Triangulation<dim>
+  triangulation (MPI_COMM_WORLD);
+
+  GridGenerator::hyper_cube(triangulation);
+  triangulation.refine_global (1);
+
+  // partition the triangulation by hand
+  for (auto cell : triangulation.active_cell_iterators())
+    cell->set_subdomain_id (cell->active_cell_index() %
+                            Utilities::MPI::n_mpi_processes (MPI_COMM_WORLD));
+
+
+  FE_Q<dim> fe(1);
+
+  DoFHandler<dim> dof_handler (triangulation);
+  dof_handler.distribute_dofs (fe);
+
+  deallog << "n_dofs: " << dof_handler.n_dofs() << std::endl;
+  deallog << "n_locally_owned_dofs: " << dof_handler.n_locally_owned_dofs() << std::endl;
+
+  deallog << "n_locally_owned_dofs_per_processor: ";
+  std::vector<types::global_dof_index> v = dof_handler.n_locally_owned_dofs_per_processor();
+  unsigned int sum = 0;
+  for (unsigned int i=0; i<v.size(); ++i)
+    {
+      deallog << v[i] << " ";
+      sum += v[i];
+    }
+  deallog << " sum: " << sum << std::endl;
+  deallog << " locally_owned_dofs: ";
+  dof_handler.locally_owned_dofs().write(deallog.get_file_stream());
+  deallog << std::endl;
+
+  Assert (dof_handler.n_locally_owned_dofs() ==
+          dof_handler.n_locally_owned_dofs_per_processor()[triangulation.locally_owned_subdomain()],
+          ExcInternalError());
+  Assert (dof_handler.n_locally_owned_dofs() == dof_handler.locally_owned_dofs().n_elements(),
+          ExcInternalError());
+
+  const unsigned int N = dof_handler.n_dofs();
+
+  Assert (dof_handler.n_locally_owned_dofs() <= N,
+          ExcInternalError());
+  Assert (std::accumulate (dof_handler.n_locally_owned_dofs_per_processor().begin(),
+                           dof_handler.n_locally_owned_dofs_per_processor().end(),
+                           0U) == N,
+          ExcInternalError());
+
+  IndexSet all (N);
+  for (unsigned int i=0;
+       i<dof_handler.locally_owned_dofs_per_processor().size(); ++i)
+    {
+      IndexSet intersect = all & dof_handler.locally_owned_dofs_per_processor()[i];
+      Assert(intersect.n_elements()==0, ExcInternalError());
+      all.add_indices(dof_handler.locally_owned_dofs_per_processor()[i]);
+    }
+
+  Assert(all == complete_index_set(N), ExcInternalError());
+}
+
+
+int main(int argc, char *argv[])
+{
+  Utilities::MPI::MPI_InitFinalize mpi_initialization(argc, argv, 1);
+
+  MPILogInitAll all;
+
+  deallog.push("1d");
+  test<1>();
+  deallog.pop();
+
+  deallog.push("2d");
+  test<2>();
+  deallog.pop();
+
+  deallog.push("3d");
+  test<3>();
+  deallog.pop();
+}
diff --git a/tests/sharedtria/no_cells_01.with_metis=true.mpirun=3.output b/tests/sharedtria/no_cells_01.with_metis=true.mpirun=3.output
new file mode 100644
index 0000000000..81969ccd2c
--- /dev/null
+++ b/tests/sharedtria/no_cells_01.with_metis=true.mpirun=3.output
@@ -0,0 +1,58 @@
+
+DEAL:0:1d::n_dofs: 3
+DEAL:0:1d::n_locally_owned_dofs: 1
+DEAL:0:1d::n_locally_owned_dofs_per_processor: 1 2 0  sum: 3
+3 1
+0 1
+DEAL:0:1d:: locally_owned_dofs: 
+DEAL:0:2d::n_dofs: 9
+DEAL:0:2d::n_locally_owned_dofs: 4
+DEAL:0:2d::n_locally_owned_dofs_per_processor: 4 3 2  sum: 9
+9 1
+0 4
+DEAL:0:2d:: locally_owned_dofs: 
+DEAL:0:3d::n_dofs: 27
+DEAL:0:3d::n_locally_owned_dofs: 10
+DEAL:0:3d::n_locally_owned_dofs_per_processor: 10 11 6  sum: 27
+27 1
+0 10
+DEAL:0:3d:: locally_owned_dofs: 
+
+DEAL:1:1d::n_dofs: 3
+DEAL:1:1d::n_locally_owned_dofs: 2
+DEAL:1:1d::n_locally_owned_dofs_per_processor: 1 2 0  sum: 3
+3 1
+1 3
+DEAL:1:1d:: locally_owned_dofs: 
+DEAL:1:2d::n_dofs: 9
+DEAL:1:2d::n_locally_owned_dofs: 3
+DEAL:1:2d::n_locally_owned_dofs_per_processor: 4 3 2  sum: 9
+9 1
+4 7
+DEAL:1:2d:: locally_owned_dofs: 
+DEAL:1:3d::n_dofs: 27
+DEAL:1:3d::n_locally_owned_dofs: 11
+DEAL:1:3d::n_locally_owned_dofs_per_processor: 10 11 6  sum: 27
+27 1
+10 21
+DEAL:1:3d:: locally_owned_dofs: 
+
+
+DEAL:2:1d::n_dofs: 3
+DEAL:2:1d::n_locally_owned_dofs: 0
+DEAL:2:1d::n_locally_owned_dofs_per_processor: 1 2 0  sum: 3
+3 0
+DEAL:2:1d:: locally_owned_dofs: 
+DEAL:2:2d::n_dofs: 9
+DEAL:2:2d::n_locally_owned_dofs: 2
+DEAL:2:2d::n_locally_owned_dofs_per_processor: 4 3 2  sum: 9
+9 1
+7 9
+DEAL:2:2d:: locally_owned_dofs: 
+DEAL:2:3d::n_dofs: 27
+DEAL:2:3d::n_locally_owned_dofs: 6
+DEAL:2:3d::n_locally_owned_dofs_per_processor: 10 11 6  sum: 27
+27 1
+21 27
+DEAL:2:3d:: locally_owned_dofs: 
+
diff --git a/tests/sharedtria/no_cells_01.with_metis=true.mpirun=5.output b/tests/sharedtria/no_cells_01.with_metis=true.mpirun=5.output
new file mode 100644
index 0000000000..648350f6cd
--- /dev/null
+++ b/tests/sharedtria/no_cells_01.with_metis=true.mpirun=5.output
@@ -0,0 +1,95 @@
+
+DEAL:0:1d::n_dofs: 3
+DEAL:0:1d::n_locally_owned_dofs: 1
+DEAL:0:1d::n_locally_owned_dofs_per_processor: 1 2 0 0 0  sum: 3
+3 1
+0 1
+DEAL:0:1d:: locally_owned_dofs: 
+DEAL:0:2d::n_dofs: 9
+DEAL:0:2d::n_locally_owned_dofs: 1
+DEAL:0:2d::n_locally_owned_dofs_per_processor: 1 3 2 3 0  sum: 9
+9 1
+0 1
+DEAL:0:2d:: locally_owned_dofs: 
+DEAL:0:3d::n_dofs: 27
+DEAL:0:3d::n_locally_owned_dofs: 5
+DEAL:0:3d::n_locally_owned_dofs_per_processor: 5 8 7 5 2  sum: 27
+27 1
+0 5
+DEAL:0:3d:: locally_owned_dofs: 
+
+DEAL:1:1d::n_dofs: 3
+DEAL:1:1d::n_locally_owned_dofs: 2
+DEAL:1:1d::n_locally_owned_dofs_per_processor: 1 2 0 0 0  sum: 3
+3 1
+1 3
+DEAL:1:1d:: locally_owned_dofs: 
+DEAL:1:2d::n_dofs: 9
+DEAL:1:2d::n_locally_owned_dofs: 3
+DEAL:1:2d::n_locally_owned_dofs_per_processor: 1 3 2 3 0  sum: 9
+9 1
+1 4
+DEAL:1:2d:: locally_owned_dofs: 
+DEAL:1:3d::n_dofs: 27
+DEAL:1:3d::n_locally_owned_dofs: 8
+DEAL:1:3d::n_locally_owned_dofs_per_processor: 5 8 7 5 2  sum: 27
+27 1
+5 13
+DEAL:1:3d:: locally_owned_dofs: 
+
+
+DEAL:2:1d::n_dofs: 3
+DEAL:2:1d::n_locally_owned_dofs: 0
+DEAL:2:1d::n_locally_owned_dofs_per_processor: 1 2 0 0 0  sum: 3
+3 0
+DEAL:2:1d:: locally_owned_dofs: 
+DEAL:2:2d::n_dofs: 9
+DEAL:2:2d::n_locally_owned_dofs: 2
+DEAL:2:2d::n_locally_owned_dofs_per_processor: 1 3 2 3 0  sum: 9
+9 1
+4 6
+DEAL:2:2d:: locally_owned_dofs: 
+DEAL:2:3d::n_dofs: 27
+DEAL:2:3d::n_locally_owned_dofs: 7
+DEAL:2:3d::n_locally_owned_dofs_per_processor: 5 8 7 5 2  sum: 27
+27 1
+13 20
+DEAL:2:3d:: locally_owned_dofs: 
+
+
+DEAL:3:1d::n_dofs: 3
+DEAL:3:1d::n_locally_owned_dofs: 0
+DEAL:3:1d::n_locally_owned_dofs_per_processor: 1 2 0 0 0  sum: 3
+3 0
+DEAL:3:1d:: locally_owned_dofs: 
+DEAL:3:2d::n_dofs: 9
+DEAL:3:2d::n_locally_owned_dofs: 3
+DEAL:3:2d::n_locally_owned_dofs_per_processor: 1 3 2 3 0  sum: 9
+9 1
+6 9
+DEAL:3:2d:: locally_owned_dofs: 
+DEAL:3:3d::n_dofs: 27
+DEAL:3:3d::n_locally_owned_dofs: 5
+DEAL:3:3d::n_locally_owned_dofs_per_processor: 5 8 7 5 2  sum: 27
+27 1
+20 25
+DEAL:3:3d:: locally_owned_dofs: 
+
+
+DEAL:4:1d::n_dofs: 3
+DEAL:4:1d::n_locally_owned_dofs: 0
+DEAL:4:1d::n_locally_owned_dofs_per_processor: 1 2 0 0 0  sum: 3
+3 0
+DEAL:4:1d:: locally_owned_dofs: 
+DEAL:4:2d::n_dofs: 9
+DEAL:4:2d::n_locally_owned_dofs: 0
+DEAL:4:2d::n_locally_owned_dofs_per_processor: 1 3 2 3 0  sum: 9
+9 0
+DEAL:4:2d:: locally_owned_dofs: 
+DEAL:4:3d::n_dofs: 27
+DEAL:4:3d::n_locally_owned_dofs: 2
+DEAL:4:3d::n_locally_owned_dofs_per_processor: 5 8 7 5 2  sum: 27
+27 1
+25 27
+DEAL:4:3d:: locally_owned_dofs: 
+
diff --git a/tests/sharedtria/no_cells_01.with_metis=true.mpirun=9.output b/tests/sharedtria/no_cells_01.with_metis=true.mpirun=9.output
new file mode 100644
index 0000000000..06567b8304
--- /dev/null
+++ b/tests/sharedtria/no_cells_01.with_metis=true.mpirun=9.output
@@ -0,0 +1,166 @@
+
+DEAL:0:1d::n_dofs: 3
+DEAL:0:1d::n_locally_owned_dofs: 1
+DEAL:0:1d::n_locally_owned_dofs_per_processor: 1 2 0 0 0 0 0 0 0  sum: 3
+3 1
+0 1
+DEAL:0:1d:: locally_owned_dofs: 
+DEAL:0:2d::n_dofs: 9
+DEAL:0:2d::n_locally_owned_dofs: 1
+DEAL:0:2d::n_locally_owned_dofs_per_processor: 1 3 2 3 0 0 0 0 0  sum: 9
+9 1
+0 1
+DEAL:0:2d:: locally_owned_dofs: 
+DEAL:0:3d::n_dofs: 27
+DEAL:0:3d::n_locally_owned_dofs: 1
+DEAL:0:3d::n_locally_owned_dofs_per_processor: 1 4 2 5 2 4 4 5 0  sum: 27
+27 1
+0 1
+DEAL:0:3d:: locally_owned_dofs: 
+
+DEAL:1:1d::n_dofs: 3
+DEAL:1:1d::n_locally_owned_dofs: 2
+DEAL:1:1d::n_locally_owned_dofs_per_processor: 1 2 0 0 0 0 0 0 0  sum: 3
+3 1
+1 3
+DEAL:1:1d:: locally_owned_dofs: 
+DEAL:1:2d::n_dofs: 9
+DEAL:1:2d::n_locally_owned_dofs: 3
+DEAL:1:2d::n_locally_owned_dofs_per_processor: 1 3 2 3 0 0 0 0 0  sum: 9
+9 1
+1 4
+DEAL:1:2d:: locally_owned_dofs: 
+DEAL:1:3d::n_dofs: 27
+DEAL:1:3d::n_locally_owned_dofs: 4
+DEAL:1:3d::n_locally_owned_dofs_per_processor: 1 4 2 5 2 4 4 5 0  sum: 27
+27 1
+1 5
+DEAL:1:3d:: locally_owned_dofs: 
+
+
+DEAL:2:1d::n_dofs: 3
+DEAL:2:1d::n_locally_owned_dofs: 0
+DEAL:2:1d::n_locally_owned_dofs_per_processor: 1 2 0 0 0 0 0 0 0  sum: 3
+3 0
+DEAL:2:1d:: locally_owned_dofs: 
+DEAL:2:2d::n_dofs: 9
+DEAL:2:2d::n_locally_owned_dofs: 2
+DEAL:2:2d::n_locally_owned_dofs_per_processor: 1 3 2 3 0 0 0 0 0  sum: 9
+9 1
+4 6
+DEAL:2:2d:: locally_owned_dofs: 
+DEAL:2:3d::n_dofs: 27
+DEAL:2:3d::n_locally_owned_dofs: 2
+DEAL:2:3d::n_locally_owned_dofs_per_processor: 1 4 2 5 2 4 4 5 0  sum: 27
+27 1
+5 7
+DEAL:2:3d:: locally_owned_dofs: 
+
+
+DEAL:3:1d::n_dofs: 3
+DEAL:3:1d::n_locally_owned_dofs: 0
+DEAL:3:1d::n_locally_owned_dofs_per_processor: 1 2 0 0 0 0 0 0 0  sum: 3
+3 0
+DEAL:3:1d:: locally_owned_dofs: 
+DEAL:3:2d::n_dofs: 9
+DEAL:3:2d::n_locally_owned_dofs: 3
+DEAL:3:2d::n_locally_owned_dofs_per_processor: 1 3 2 3 0 0 0 0 0  sum: 9
+9 1
+6 9
+DEAL:3:2d:: locally_owned_dofs: 
+DEAL:3:3d::n_dofs: 27
+DEAL:3:3d::n_locally_owned_dofs: 5
+DEAL:3:3d::n_locally_owned_dofs_per_processor: 1 4 2 5 2 4 4 5 0  sum: 27
+27 1
+7 12
+DEAL:3:3d:: locally_owned_dofs: 
+
+
+DEAL:4:1d::n_dofs: 3
+DEAL:4:1d::n_locally_owned_dofs: 0
+DEAL:4:1d::n_locally_owned_dofs_per_processor: 1 2 0 0 0 0 0 0 0  sum: 3
+3 0
+DEAL:4:1d:: locally_owned_dofs: 
+DEAL:4:2d::n_dofs: 9
+DEAL:4:2d::n_locally_owned_dofs: 0
+DEAL:4:2d::n_locally_owned_dofs_per_processor: 1 3 2 3 0 0 0 0 0  sum: 9
+9 0
+DEAL:4:2d:: locally_owned_dofs: 
+DEAL:4:3d::n_dofs: 27
+DEAL:4:3d::n_locally_owned_dofs: 2
+DEAL:4:3d::n_locally_owned_dofs_per_processor: 1 4 2 5 2 4 4 5 0  sum: 27
+27 1
+12 14
+DEAL:4:3d:: locally_owned_dofs: 
+
+
+DEAL:5:1d::n_dofs: 3
+DEAL:5:1d::n_locally_owned_dofs: 0
+DEAL:5:1d::n_locally_owned_dofs_per_processor: 1 2 0 0 0 0 0 0 0  sum: 3
+3 0
+DEAL:5:1d:: locally_owned_dofs: 
+DEAL:5:2d::n_dofs: 9
+DEAL:5:2d::n_locally_owned_dofs: 0
+DEAL:5:2d::n_locally_owned_dofs_per_processor: 1 3 2 3 0 0 0 0 0  sum: 9
+9 0
+DEAL:5:2d:: locally_owned_dofs: 
+DEAL:5:3d::n_dofs: 27
+DEAL:5:3d::n_locally_owned_dofs: 4
+DEAL:5:3d::n_locally_owned_dofs_per_processor: 1 4 2 5 2 4 4 5 0  sum: 27
+27 1
+14 18
+DEAL:5:3d:: locally_owned_dofs: 
+
+
+DEAL:6:1d::n_dofs: 3
+DEAL:6:1d::n_locally_owned_dofs: 0
+DEAL:6:1d::n_locally_owned_dofs_per_processor: 1 2 0 0 0 0 0 0 0  sum: 3
+3 0
+DEAL:6:1d:: locally_owned_dofs: 
+DEAL:6:2d::n_dofs: 9
+DEAL:6:2d::n_locally_owned_dofs: 0
+DEAL:6:2d::n_locally_owned_dofs_per_processor: 1 3 2 3 0 0 0 0 0  sum: 9
+9 0
+DEAL:6:2d:: locally_owned_dofs: 
+DEAL:6:3d::n_dofs: 27
+DEAL:6:3d::n_locally_owned_dofs: 4
+DEAL:6:3d::n_locally_owned_dofs_per_processor: 1 4 2 5 2 4 4 5 0  sum: 27
+27 1
+18 22
+DEAL:6:3d:: locally_owned_dofs: 
+
+
+DEAL:7:1d::n_dofs: 3
+DEAL:7:1d::n_locally_owned_dofs: 0
+DEAL:7:1d::n_locally_owned_dofs_per_processor: 1 2 0 0 0 0 0 0 0  sum: 3
+3 0
+DEAL:7:1d:: locally_owned_dofs: 
+DEAL:7:2d::n_dofs: 9
+DEAL:7:2d::n_locally_owned_dofs: 0
+DEAL:7:2d::n_locally_owned_dofs_per_processor: 1 3 2 3 0 0 0 0 0  sum: 9
+9 0
+DEAL:7:2d:: locally_owned_dofs: 
+DEAL:7:3d::n_dofs: 27
+DEAL:7:3d::n_locally_owned_dofs: 5
+DEAL:7:3d::n_locally_owned_dofs_per_processor: 1 4 2 5 2 4 4 5 0  sum: 27
+27 1
+22 27
+DEAL:7:3d:: locally_owned_dofs: 
+
+
+DEAL:8:1d::n_dofs: 3
+DEAL:8:1d::n_locally_owned_dofs: 0
+DEAL:8:1d::n_locally_owned_dofs_per_processor: 1 2 0 0 0 0 0 0 0  sum: 3
+3 0
+DEAL:8:1d:: locally_owned_dofs: 
+DEAL:8:2d::n_dofs: 9
+DEAL:8:2d::n_locally_owned_dofs: 0
+DEAL:8:2d::n_locally_owned_dofs_per_processor: 1 3 2 3 0 0 0 0 0  sum: 9
+9 0
+DEAL:8:2d:: locally_owned_dofs: 
+DEAL:8:3d::n_dofs: 27
+DEAL:8:3d::n_locally_owned_dofs: 0
+DEAL:8:3d::n_locally_owned_dofs_per_processor: 1 4 2 5 2 4 4 5 0  sum: 27
+27 0
+DEAL:8:3d:: locally_owned_dofs: 
+