Reference documentation for deal.II version GIT f6a5d312c9 2023-10-04 08:50:02+00:00
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mg_transfer.h
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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 
16 #ifndef dealii_mg_transfer_h
17 #define dealii_mg_transfer_h
18 
19 #include <deal.II/base/config.h>
20 
22 
24 
26 
36 
39 
40 #include <memory>
41 
42 
44 
45 
46 namespace internal
47 {
48  template <typename VectorType>
50  {
53 
54  static const bool requires_distributed_sparsity_pattern = false;
55 
56  template <typename SparsityPatternType, int dim, int spacedim>
57  static void
59  Sparsity &sparsity,
60  int level,
61  const SparsityPatternType &sp,
63  {
64  sparsity.copy_from(sp);
65  (void)level;
66  matrix.reinit(sparsity);
67  }
68  };
69 
70 #ifdef DEAL_II_WITH_TRILINOS
71  template <typename Number>
73  {
76 
77  static const bool requires_distributed_sparsity_pattern = false;
78 
79  template <typename SparsityPatternType, int dim, int spacedim>
80  static void
82  Sparsity &,
83  int level,
84  const SparsityPatternType &sp,
85  const DoFHandler<dim, spacedim> &dh)
86  {
87  const MPI_Comm communicator = dh.get_communicator();
88 
89  matrix.reinit(dh.locally_owned_mg_dofs(level + 1),
91  sp,
92  communicator,
93  true);
94  }
95  };
96 
97  template <>
99  {
102 
103  static const bool requires_distributed_sparsity_pattern = false;
104 
105  template <typename SparsityPatternType, int dim, int spacedim>
106  static void
108  Sparsity &,
109  int level,
110  const SparsityPatternType &sp,
111  const DoFHandler<dim, spacedim> &dh)
112  {
113  const MPI_Comm communicator = dh.get_communicator();
114 
115  matrix.reinit(dh.locally_owned_mg_dofs(level + 1),
117  sp,
118  communicator,
119  true);
120  }
121  };
122 
123 # ifdef DEAL_II_WITH_MPI
124 # ifdef DEAL_II_TRILINOS_WITH_TPETRA
125  template <typename Number>
127  {
130 
131  static const bool requires_distributed_sparsity_pattern = false;
132 
133  template <typename SparsityPatternType, int dim, int spacedim>
134  static void
136  Sparsity &,
137  int level,
138  const SparsityPatternType &sp,
139  const DoFHandler<dim, spacedim> &dh)
140  {
141  const MPI_Comm communicator = dh.get_communicator();
142 
143  matrix.reinit(dh.locally_owned_mg_dofs(level + 1),
145  sp,
146  communicator,
147  true);
148  }
149  };
150 # endif
151 
152  template <>
154  {
157 
158  static const bool requires_distributed_sparsity_pattern = false;
159 
160  template <typename SparsityPatternType, int dim, int spacedim>
161  static void
163  Sparsity &,
164  int level,
165  const SparsityPatternType &sp,
166  const DoFHandler<dim, spacedim> &dh)
167  {
168  const MPI_Comm communicator = dh.get_communicator();
169 
170  matrix.reinit(dh.locally_owned_mg_dofs(level + 1),
172  sp,
173  communicator,
174  true);
175  }
176  };
177 # endif
178 
179 #else
180  // ! DEAL_II_WITH_TRILINOS
181  template <typename Number>
182  struct MatrixSelector<LinearAlgebra::distributed::Vector<Number>>
183  {
184  using Sparsity = ::SparsityPattern;
186 
187  static const bool requires_distributed_sparsity_pattern = false;
188 
189  template <typename SparsityPatternType, int dim, int spacedim>
190  static void
191  reinit(Matrix &,
192  Sparsity &,
193  int,
194  const SparsityPatternType &,
196  {
197  AssertThrow(
198  false,
200  "ERROR: MGTransferPrebuilt with LinearAlgebra::distributed::Vector currently "
201  "needs deal.II to be configured with Trilinos."));
202  }
203  };
204 
205 #endif
206 
207 #ifdef DEAL_II_WITH_PETSC
208  template <>
210  {
213 
214  static const bool requires_distributed_sparsity_pattern = true;
215 
216  template <typename SparsityPatternType, int dim, int spacedim>
217  static void
219  Sparsity &,
220  int level,
221  const SparsityPatternType &sp,
222  const DoFHandler<dim, spacedim> &dh)
223  {
224  const MPI_Comm communicator = dh.get_communicator();
225 
226  // Reinit PETSc matrix
227  matrix.reinit(dh.locally_owned_mg_dofs(level + 1),
229  sp,
230  communicator);
231  }
232  };
233 #endif
234 } // namespace internal
235 
236 /*
237  * MGTransferBase is defined in mg_base.h
238  */
239 
249 template <typename VectorType>
250 class MGLevelGlobalTransfer : public MGTransferBase<VectorType>
251 {
252 public:
256  void
257  clear();
258 
265  template <int dim, class InVector, int spacedim>
266  void
269  const InVector &src) const;
270 
278  template <int dim, class OutVector, int spacedim>
279  void
281  OutVector &dst,
282  const MGLevelObject<VectorType> &src) const;
283 
289  template <int dim, class OutVector, int spacedim>
290  void
292  OutVector &dst,
293  const MGLevelObject<VectorType> &src) const;
294 
310  void
311  set_component_to_block_map(const std::vector<unsigned int> &map);
312 
316  std::size_t
317  memory_consumption() const;
318 
322  void
323  print_indices(std::ostream &os) const;
324 
325 protected:
329  template <int dim, int spacedim>
330  void
332  const DoFHandler<dim, spacedim> &dof_handler);
333 
337  std::vector<types::global_dof_index> sizes;
338 
346  std::vector<
347  std::vector<std::pair<types::global_dof_index, types::global_dof_index>>>
349 
357  std::vector<
358  std::vector<std::pair<types::global_dof_index, types::global_dof_index>>>
360 
368  std::vector<
369  std::vector<std::pair<types::global_dof_index, types::global_dof_index>>>
371 
379 
384  std::vector<unsigned int> component_to_block_map;
385 
390 
391 private:
395  template <int dim, int spacedim>
396  void
397  assert_built(const DoFHandler<dim, spacedim> &dof_handler) const;
398 };
399 
400 
401 
410 template <typename Number>
412  : public MGTransferBase<LinearAlgebra::distributed::Vector<Number>>
413 {
414 public:
418  void
419  clear();
420 
427  template <int dim, typename Number2, int spacedim>
428  void
432 
440  template <int dim, typename Number2, int spacedim>
441  void
443  const DoFHandler<dim, spacedim> &dof_handler,
446 
452  template <int dim, typename Number2, int spacedim>
453  void
455  const DoFHandler<dim, spacedim> &dof_handler,
458 
474  void
475  set_component_to_block_map(const std::vector<unsigned int> &map);
476 
480  std::size_t
481  memory_consumption() const;
482 
486  void
487  print_indices(std::ostream &os) const;
488 
489 protected:
494  template <int dim, typename Number2, int spacedim>
495  void
499  const bool solution_transfer) const;
500 
504  template <int dim, int spacedim>
505  void
507  const DoFHandler<dim, spacedim> &dof_handler);
508 
512  std::vector<types::global_dof_index> sizes;
513 
522  std::vector<Table<2, unsigned int>> copy_indices;
523 
527  std::vector<Table<2, unsigned int>> solution_copy_indices;
528 
536  std::vector<Table<2, unsigned int>> copy_indices_global_mine;
537 
545  std::vector<Table<2, unsigned int>> copy_indices_level_mine;
546 
550  std::vector<Table<2, unsigned int>> solution_copy_indices_level_mine;
551 
559 
567 
572  std::vector<unsigned int> component_to_block_map;
573 
578 
585 
591 
598 
602  std::function<void(const unsigned int,
605 
606 private:
610  template <int dim, int spacedim>
611  void
612  assert_built(const DoFHandler<dim, spacedim> &dof_handler) const;
613 };
614 
615 
616 
627 template <typename VectorType>
628 class MGTransferPrebuilt : public MGLevelGlobalTransfer<VectorType>
629 {
630 public:
635  MGTransferPrebuilt() = default;
636 
642 
646  virtual ~MGTransferPrebuilt() override = default;
647 
651  void
653 
657  void
658  clear();
659 
664  template <int dim, int spacedim>
665  void
666  build(const DoFHandler<dim, spacedim> &dof_handler);
667 
679  virtual void
680  prolongate(const unsigned int to_level,
681  VectorType &dst,
682  const VectorType &src) const override;
683 
699  virtual void
700  restrict_and_add(const unsigned int from_level,
701  VectorType &dst,
702  const VectorType &src) const override;
703 
708 
713 
717  std::size_t
718  memory_consumption() const;
719 
723  void
724  print_matrices(std::ostream &os) const;
725 
726 private:
730  std::vector<
731  std::shared_ptr<typename internal::MatrixSelector<VectorType>::Sparsity>>
733 
739  std::vector<
740  std::shared_ptr<typename internal::MatrixSelector<VectorType>::Matrix>>
742 
747  std::vector<std::vector<bool>> interface_dofs;
748 };
749 
750 
755 
756 #endif
const IndexSet & locally_owned_mg_dofs(const unsigned int level) const
MPI_Comm get_communicator() const
std::vector< Table< 2, unsigned int > > solution_copy_indices_level_mine
Definition: mg_transfer.h:550
void copy_from_mg(const DoFHandler< dim, spacedim > &dof_handler, LinearAlgebra::distributed::Vector< Number2 > &dst, const MGLevelObject< LinearAlgebra::distributed::Vector< Number >> &src) const
void copy_to_mg(const DoFHandler< dim, spacedim > &dof_handler, MGLevelObject< LinearAlgebra::distributed::Vector< Number >> &dst, const LinearAlgebra::distributed::Vector< Number2 > &src, const bool solution_transfer) const
void copy_to_mg(const DoFHandler< dim, spacedim > &dof_handler, MGLevelObject< LinearAlgebra::distributed::Vector< Number >> &dst, const LinearAlgebra::distributed::Vector< Number2 > &src) const
MGLevelObject< LinearAlgebra::distributed::Vector< Number > > ghosted_level_vector
Definition: mg_transfer.h:597
void set_component_to_block_map(const std::vector< unsigned int > &map)
std::vector< Table< 2, unsigned int > > solution_copy_indices
Definition: mg_transfer.h:527
LinearAlgebra::distributed::Vector< Number > solution_ghosted_global_vector
Definition: mg_transfer.h:590
void assert_built(const DoFHandler< dim, spacedim > &dof_handler) const
std::vector< Table< 2, unsigned int > > copy_indices_global_mine
Definition: mg_transfer.h:536
LinearAlgebra::distributed::Vector< Number > ghosted_global_vector
Definition: mg_transfer.h:584
std::function< void(const unsigned int, LinearAlgebra::distributed::Vector< Number > &)> initialize_dof_vector
Definition: mg_transfer.h:604
std::vector< Table< 2, unsigned int > > copy_indices_level_mine
Definition: mg_transfer.h:545
void copy_from_mg_add(const DoFHandler< dim, spacedim > &dof_handler, LinearAlgebra::distributed::Vector< Number2 > &dst, const MGLevelObject< LinearAlgebra::distributed::Vector< Number >> &src) const
void print_indices(std::ostream &os) const
void assert_built(const DoFHandler< dim, spacedim > &dof_handler) const
std::vector< std::vector< std::pair< types::global_dof_index, types::global_dof_index > > > copy_indices_level_mine
Definition: mg_transfer.h:370
std::size_t memory_consumption() const
void set_component_to_block_map(const std::vector< unsigned int > &map)
std::vector< std::vector< std::pair< types::global_dof_index, types::global_dof_index > > > copy_indices
Definition: mg_transfer.h:348
SmartPointer< const MGConstrainedDoFs > mg_constrained_dofs
Definition: mg_transfer.h:389
void fill_and_communicate_copy_indices(const DoFHandler< dim, spacedim > &dof_handler)
std::vector< unsigned int > component_to_block_map
Definition: mg_transfer.h:384
void copy_from_mg_add(const DoFHandler< dim, spacedim > &dof_handler, OutVector &dst, const MGLevelObject< VectorType > &src) const
std::vector< types::global_dof_index > sizes
Definition: mg_transfer.h:337
std::vector< std::vector< std::pair< types::global_dof_index, types::global_dof_index > > > copy_indices_global_mine
Definition: mg_transfer.h:359
void copy_from_mg(const DoFHandler< dim, spacedim > &dof_handler, OutVector &dst, const MGLevelObject< VectorType > &src) const
void copy_to_mg(const DoFHandler< dim, spacedim > &dof_handler, MGLevelObject< VectorType > &dst, const InVector &src) const
virtual ~MGTransferPrebuilt() override=default
std::vector< std::vector< bool > > interface_dofs
Definition: mg_transfer.h:747
virtual void restrict_and_add(const unsigned int from_level, VectorType &dst, const VectorType &src) const override
void build(const DoFHandler< dim, spacedim > &dof_handler)
std::vector< std::shared_ptr< typename internal::MatrixSelector< VectorType >::Sparsity > > prolongation_sparsities
Definition: mg_transfer.h:732
std::size_t memory_consumption() const
MGTransferPrebuilt()=default
virtual void prolongate(const unsigned int to_level, VectorType &dst, const VectorType &src) const override
std::vector< std::shared_ptr< typename internal::MatrixSelector< VectorType >::Matrix > > prolongation_matrices
Definition: mg_transfer.h:741
void print_matrices(std::ostream &os) const
void initialize_constraints(const MGConstrainedDoFs &mg_constrained_dofs)
void copy_from(const size_type n_rows, const size_type n_cols, const ForwardIterator begin, const ForwardIterator end)
#define DEAL_II_NAMESPACE_OPEN
Definition: config.h:477
#define DEAL_II_NAMESPACE_CLOSE
Definition: config.h:478
unsigned int level
Definition: grid_out.cc:4617
#define DeclException0(Exception0)
Definition: exceptions.h:467
static ::ExceptionBase & ExcMatricesNotBuilt()
static ::ExceptionBase & ExcNotImplemented()
static ::ExceptionBase & ExcNoProlongation()
#define AssertThrow(cond, exc)
Definition: exceptions.h:1705
@ matrix
Contents is actually a matrix.
SparseMatrix< double > SparseMatrix
static void reinit(Matrix &matrix, Sparsity &, int level, const SparsityPatternType &sp, const DoFHandler< dim, spacedim > &dh)
Definition: mg_transfer.h:81
static void reinit(Matrix &matrix, Sparsity &, int level, const SparsityPatternType &sp, const DoFHandler< dim, spacedim > &dh)
Definition: mg_transfer.h:162
static void reinit(Matrix &matrix, Sparsity &, int level, const SparsityPatternType &sp, const DoFHandler< dim, spacedim > &dh)
Definition: mg_transfer.h:135
static void reinit(Matrix &matrix, Sparsity &, int level, const SparsityPatternType &sp, const DoFHandler< dim, spacedim > &dh)
Definition: mg_transfer.h:218
static void reinit(Matrix &matrix, Sparsity &, int level, const SparsityPatternType &sp, const DoFHandler< dim, spacedim > &dh)
Definition: mg_transfer.h:107
static const bool requires_distributed_sparsity_pattern
Definition: mg_transfer.h:54
static void reinit(Matrix &matrix, Sparsity &sparsity, int level, const SparsityPatternType &sp, const DoFHandler< dim, spacedim > &)
Definition: mg_transfer.h:58
::SparseMatrix< typename VectorType::value_type > Matrix
Definition: mg_transfer.h:52
::SparsityPattern Sparsity
Definition: mg_transfer.h:51