Reference documentation for deal.II version 9.2.0
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trilinos_epetra_communication_pattern.cc
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2 //
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4 //
5 // This file is part of the deal.II library.
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12 // the top level directory of deal.II.
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15 
17 
19 
20 #ifdef DEAL_II_WITH_TRILINOS
21 
22 # ifdef DEAL_II_WITH_MPI
23 
24 # include <deal.II/base/index_set.h>
25 
26 # include <Epetra_Map.h>
27 
28 # include <memory>
29 
31 
32 namespace LinearAlgebra
33 {
34  namespace EpetraWrappers
35  {
37  const IndexSet &vector_space_vector_index_set,
38  const IndexSet &read_write_vector_index_set,
39  const MPI_Comm &communicator)
40  {
41  // virtual functions called in constructors and destructors never use the
42  // override in a derived class
43  // for clarity be explicit on which function is called
44  CommunicationPattern::reinit(vector_space_vector_index_set,
45  read_write_vector_index_set,
46  communicator);
47  }
48 
49 
50 
51  void
52  CommunicationPattern::reinit(const IndexSet &vector_space_vector_index_set,
53  const IndexSet &read_write_vector_index_set,
54  const MPI_Comm &communicator)
55  {
56  comm = std::make_shared<const MPI_Comm>(communicator);
57 
58  Epetra_Map vector_space_vector_map =
59  vector_space_vector_index_set.make_trilinos_map(*comm, false);
60  Epetra_Map read_write_vector_map =
61  read_write_vector_index_set.make_trilinos_map(*comm, true);
62 
63  // Target map is read_write_vector_map
64  // Source map is vector_space_vector_map. This map must have uniquely
65  // owned GID.
66  import = std_cxx14::make_unique<Epetra_Import>(read_write_vector_map,
67  vector_space_vector_map);
68  }
69 
70 
71 
72  const MPI_Comm &
74  {
75  return *comm;
76  }
77 
78 
79 
80  const Epetra_Import &
82  {
83  return *import;
84  }
85  } // namespace EpetraWrappers
86 } // namespace LinearAlgebra
87 
89 
90 # endif
91 
92 #endif
virtual void reinit(const IndexSet &vector_space_vector_index_set, const IndexSet &read_write_vector_index_set, const MPI_Comm &communicator) override
Epetra_Map make_trilinos_map(const MPI_Comm &communicator=MPI_COMM_WORLD, const bool overlapping=false) const
Definition: index_set.cc:596
#define DEAL_II_NAMESPACE_CLOSE
Definition: config.h:359
#define DEAL_II_NAMESPACE_OPEN
Definition: config.h:358
CommunicationPattern(const IndexSet &vector_space_vector_index_set, const IndexSet &read_write_vector_index_set, const MPI_Comm &communicator)