Ifpack2 Templated Preconditioning Package  Version 1.0
Ifpack2_SparsityFilter_decl.hpp
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42 
43 #ifndef IFPACK2_SPARSITYFILTER_DECL_HPP
44 #define IFPACK2_SPARSITYFILTER_DECL_HPP
45 
46 #include "Ifpack2_ConfigDefs.hpp"
47 #include "Ifpack2_Details_RowMatrix.hpp"
48 #include "Teuchos_ScalarTraits.hpp"
49 
50 namespace Ifpack2 {
51 
81 template<class MatrixType>
83  virtual public Ifpack2::Details::RowMatrix<MatrixType> {
84 public:
85  typedef typename MatrixType::scalar_type Scalar;
86  typedef typename MatrixType::local_ordinal_type LocalOrdinal;
87  typedef typename MatrixType::global_ordinal_type GlobalOrdinal;
88  typedef typename MatrixType::node_type Node;
89  typedef typename MatrixType::global_inds_host_view_type global_inds_host_view_type;
90  typedef typename MatrixType::local_inds_host_view_type local_inds_host_view_type;
91  typedef typename MatrixType::values_host_view_type values_host_view_type;
92 
93  typedef typename MatrixType::nonconst_global_inds_host_view_type nonconst_global_inds_host_view_type;
94  typedef typename MatrixType::nonconst_local_inds_host_view_type nonconst_local_inds_host_view_type;
95  typedef typename MatrixType::nonconst_values_host_view_type nonconst_values_host_view_type;
96 
97  typedef typename Teuchos::ScalarTraits<Scalar>::magnitudeType magnitudeType;
98  typedef Tpetra::RowMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Node> row_matrix_type;
99  typedef typename row_matrix_type::mag_type mag_type;
100 
101  static_assert(std::is_same<MatrixType, row_matrix_type>::value, "Ifpack2::SparsityFilter: The template parameter MatrixType must be a Tpetra::RowMatrix specialization. Please don't use Tpetra::CrsMatrix (a subclass of Tpetra::RowMatrix) here anymore.");
102 
103 
105 
106 
108  explicit SparsityFilter (const Teuchos::RCP<const row_matrix_type>& Matrix,
109  size_t AllowedNumEntries,
110  LocalOrdinal AllowedBandwidth = -Teuchos::ScalarTraits<LocalOrdinal>::one());
112  virtual ~SparsityFilter();
113 
115 
117 
119  virtual Teuchos::RCP<const Teuchos::Comm<int> > getComm() const;
120 
121 
123  virtual Teuchos::RCP<const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> > getRowMap() const;
124 
126  virtual Teuchos::RCP<const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> > getColMap() const;
127 
129  virtual Teuchos::RCP<const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> > getDomainMap() const;
130 
132  virtual Teuchos::RCP<const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> > getRangeMap() const;
133 
135  virtual Teuchos::RCP<const Tpetra::RowGraph<LocalOrdinal,GlobalOrdinal,Node> > getGraph() const;
136 
138  virtual global_size_t getGlobalNumRows() const;
139 
141  virtual global_size_t getGlobalNumCols() const;
142 
144  virtual size_t getNodeNumRows() const;
145 
147  virtual size_t getNodeNumCols() const;
148 
150  virtual GlobalOrdinal getIndexBase() const;
151 
153  virtual global_size_t getGlobalNumEntries() const;
154 
156  virtual size_t getNodeNumEntries() const;
157 
159 
160  virtual size_t getNumEntriesInGlobalRow(GlobalOrdinal globalRow) const;
161 
163 
164  virtual size_t getNumEntriesInLocalRow(LocalOrdinal localRow) const;
165 
167  virtual size_t getGlobalMaxNumRowEntries() const;
168 
170  virtual size_t getNodeMaxNumRowEntries() const;
171 
173  virtual bool hasColMap() const;
174 
176  virtual bool isLocallyIndexed() const;
177 
179  virtual bool isGloballyIndexed() const;
180 
182  virtual bool isFillComplete() const;
183 
185  virtual bool supportsRowViews() const;
186 
188 
190 
191 
193 
203  virtual void
204  getGlobalRowCopy (GlobalOrdinal GlobalRow,
205  nonconst_global_inds_host_view_type &Indices,
206  nonconst_values_host_view_type &Values,
207  size_t& NumEntries) const;
208 #ifdef TPETRA_ENABLE_DEPRECATED_CODE
209  virtual void getGlobalRowCopy(GlobalOrdinal GlobalRow,
210  const Teuchos::ArrayView<GlobalOrdinal> &Indices,
211  const Teuchos::ArrayView<Scalar> &Values,
212  size_t &NumEntries) const;
213 #endif
214 
226  virtual void
227  getLocalRowCopy (LocalOrdinal LocalRow,
228  nonconst_local_inds_host_view_type &Indices,
229  nonconst_values_host_view_type &Values,
230  size_t& NumEntries) const;
231 #ifdef TPETRA_ENABLE_DEPRECATED_CODE
232  virtual void getLocalRowCopy(LocalOrdinal DropRow,
233  const Teuchos::ArrayView<LocalOrdinal> &Indices,
234  const Teuchos::ArrayView<Scalar> &Values,
235  size_t &NumEntries) const ;
236 #endif
237 
247  virtual void
248  getGlobalRowView (GlobalOrdinal GlobalRow,
249  global_inds_host_view_type &indices,
250  values_host_view_type &values) const;
251 #ifdef TPETRA_ENABLE_DEPRECATED_CODE
252  virtual void getGlobalRowView(GlobalOrdinal GlobalRow,
253  Teuchos::ArrayView<const GlobalOrdinal> &indices,
254  Teuchos::ArrayView<const Scalar> &values) const;
255 #endif
256 
266  virtual void
267  getLocalRowView (LocalOrdinal LocalRow,
268  local_inds_host_view_type & indices,
269  values_host_view_type & values) const;
270 #ifdef TPETRA_ENABLE_DEPRECATED_CODE
271  virtual void getLocalRowView(LocalOrdinal DropRow,
272  Teuchos::ArrayView<const LocalOrdinal> &indices,
273  Teuchos::ArrayView<const Scalar> &values) const;
274 #endif
275 
277 
279  virtual void getLocalDiagCopy(Tpetra::Vector<Scalar,LocalOrdinal,GlobalOrdinal,Node> &diag) const;
280 
282 
284 
285 
295  virtual void leftScale(const Tpetra::Vector<Scalar, LocalOrdinal, GlobalOrdinal, Node>& x);
296 
306  virtual void rightScale(const Tpetra::Vector<Scalar, LocalOrdinal, GlobalOrdinal, Node>& x);
307 
309 
312  virtual mag_type getFrobeniusNorm() const;
313 
315 
320  virtual void apply(const Tpetra::MultiVector<Scalar,LocalOrdinal,GlobalOrdinal,Node> &X,
321  Tpetra::MultiVector<Scalar,LocalOrdinal,GlobalOrdinal,Node> &Y,
322  Teuchos::ETransp mode = Teuchos::NO_TRANS,
323  Scalar alpha = Teuchos::ScalarTraits<Scalar>::one(),
324  Scalar beta = Teuchos::ScalarTraits<Scalar>::zero()) const;
325 
327  virtual bool hasTransposeApply() const;
328 
330 private:
331 
333  Teuchos::RCP<const Tpetra::RowMatrix<Scalar,LocalOrdinal,GlobalOrdinal,Node> > A_;
334 
336  size_t AllowedNumEntries_;
338  LocalOrdinal AllowedBandwidth_;
340  size_t NumRows_;
342  size_t NumNonzeros_;
344  size_t MaxNumEntries_;
346  size_t MaxNumEntriesA_;
348  std::vector<size_t> NumEntries_;
350  mutable nonconst_local_inds_host_view_type Indices_;
352  mutable nonconst_values_host_view_type Values_;
353 
354 };// class SparsityFilter
355 
356 }// namespace Ifpack2
357 
358 #endif /* IFPACK2_SPARSITYFILTER_DECL_HPP */
virtual void getLocalDiagCopy(Tpetra::Vector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &diag) const
Get a copy of the diagonal entries owned by this node, with local row indices.
Definition: Ifpack2_SparsityFilter_def.hpp:414
virtual size_t getNodeNumCols() const
Returns the number of columns needed to apply the forward operator on this node, i.e., the number of elements listed in the column map.
Definition: Ifpack2_SparsityFilter_def.hpp:193
virtual size_t getGlobalMaxNumRowEntries() const
Returns the maximum number of entries across all rows/columns on all nodes.
Definition: Ifpack2_SparsityFilter_def.hpp:235
All Ifpack2 implementations of Tpetra::RowMatrix must inherit from this class.
Definition: Ifpack2_Details_RowMatrix.hpp:63
virtual global_size_t getGlobalNumRows() const
Returns the number of global rows in this matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:171
virtual void getGlobalRowView(GlobalOrdinal GlobalRow, global_inds_host_view_type &indices, values_host_view_type &values) const
Extract a const, non-persisting view of global indices in a specified row of the matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:377
virtual bool supportsRowViews() const
Returns true if RowViews are supported.
Definition: Ifpack2_SparsityFilter_def.hpp:487
virtual void getGlobalRowCopy(GlobalOrdinal GlobalRow, nonconst_global_inds_host_view_type &Indices, nonconst_values_host_view_type &Values, size_t &NumEntries) const
Extract a list of entries in a specified global row of this matrix. Put into pre-allocated storage...
Definition: Ifpack2_SparsityFilter_def.hpp:278
virtual ~SparsityFilter()
Destructor.
Definition: Ifpack2_SparsityFilter_def.hpp:109
virtual bool hasColMap() const
Indicates whether this matrix has a well-defined column map.
Definition: Ifpack2_SparsityFilter_def.hpp:249
virtual Teuchos::RCP< const Teuchos::Comm< int > > getComm() const
Returns the communicator.
Definition: Ifpack2_SparsityFilter_def.hpp:113
SparsityFilter(const Teuchos::RCP< const row_matrix_type > &Matrix, size_t AllowedNumEntries, LocalOrdinal AllowedBandwidth=-Teuchos::ScalarTraits< LocalOrdinal >::one())
Constructor.
Definition: Ifpack2_SparsityFilter_def.hpp:57
virtual size_t getNumEntriesInGlobalRow(GlobalOrdinal globalRow) const
Returns the current number of entries on this node in the specified global row.
Definition: Ifpack2_SparsityFilter_def.hpp:221
virtual bool isGloballyIndexed() const
If matrix indices are in the global range, this function returns true. Otherwise, this function retur...
Definition: Ifpack2_SparsityFilter_def.hpp:263
virtual bool isLocallyIndexed() const
If matrix indices are in the local range, this function returns true. Otherwise, this function return...
Definition: Ifpack2_SparsityFilter_def.hpp:256
virtual size_t getNodeMaxNumRowEntries() const
Returns the maximum number of entries across all rows/columns on this node.
Definition: Ifpack2_SparsityFilter_def.hpp:242
virtual bool hasTransposeApply() const
Indicates whether this operator supports applying the adjoint operator.
Definition: Ifpack2_SparsityFilter_def.hpp:480
virtual bool isFillComplete() const
Returns true if fillComplete() has been called.
Definition: Ifpack2_SparsityFilter_def.hpp:270
Drop entries of a matrix, based on the sparsity pattern.
Definition: Ifpack2_SparsityFilter_decl.hpp:82
virtual mag_type getFrobeniusNorm() const
Returns the Frobenius norm of the matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:494
virtual GlobalOrdinal getIndexBase() const
Returns the index base for global indices for this matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:200
virtual global_size_t getGlobalNumEntries() const
Returns the global number of entries in this matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:207
virtual size_t getNumEntriesInLocalRow(LocalOrdinal localRow) const
Returns the current number of entries on this node in the specified local row.
Definition: Ifpack2_SparsityFilter_def.hpp:228
virtual Teuchos::RCP< const Tpetra::Map< LocalOrdinal, GlobalOrdinal, Node > > getRangeMap() const
Returns the Map that describes the range distribution in this matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:154
virtual void apply(const Tpetra::MultiVector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &X, Tpetra::MultiVector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &Y, Teuchos::ETransp mode=Teuchos::NO_TRANS, Scalar alpha=Teuchos::ScalarTraits< Scalar >::one(), Scalar beta=Teuchos::ScalarTraits< Scalar >::zero()) const
Computes the operator-multivector application.
Definition: Ifpack2_SparsityFilter_def.hpp:436
virtual Teuchos::RCP< const Tpetra::Map< LocalOrdinal, GlobalOrdinal, Node > > getRowMap() const
Returns the Map that describes the row distribution in this matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:124
virtual void getLocalRowView(LocalOrdinal LocalRow, local_inds_host_view_type &indices, values_host_view_type &values) const
Extract a const, non-persisting view of local indices in a specified row of the matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:396
virtual void rightScale(const Tpetra::Vector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &x)
Scales the RowMatrix on the right with the Vector x.
Definition: Ifpack2_SparsityFilter_def.hpp:429
virtual void leftScale(const Tpetra::Vector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &x)
Scales the RowMatrix on the left with the Vector x.
Definition: Ifpack2_SparsityFilter_def.hpp:422
virtual global_size_t getGlobalNumCols() const
Returns the number of global columns in this matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:178
Preconditioners and smoothers for Tpetra sparse matrices.
Definition: Ifpack2_AdditiveSchwarz_decl.hpp:73
virtual Teuchos::RCP< const Tpetra::Map< LocalOrdinal, GlobalOrdinal, Node > > getDomainMap() const
Returns the Map that describes the domain distribution in this matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:144
virtual Teuchos::RCP< const Tpetra::RowGraph< LocalOrdinal, GlobalOrdinal, Node > > getGraph() const
Returns the RowGraph associated with this matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:164
virtual void getLocalRowCopy(LocalOrdinal LocalRow, nonconst_local_inds_host_view_type &Indices, nonconst_values_host_view_type &Values, size_t &NumEntries) const
Extract a list of entries in a specified local row of the graph. Put into storage allocated by callin...
Definition: Ifpack2_SparsityFilter_def.hpp:301
virtual size_t getNodeNumEntries() const
Returns the local number of entries in this matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:214
virtual size_t getNodeNumRows() const
Returns the number of rows owned on the calling node.
Definition: Ifpack2_SparsityFilter_def.hpp:185
virtual Teuchos::RCP< const Tpetra::Map< LocalOrdinal, GlobalOrdinal, Node > > getColMap() const
Returns the Map that describes the column distribution in this matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:134