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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 Teuchos::ScalarTraits<Scalar>::magnitudeType magnitudeType;
90  typedef Tpetra::RowMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Node> row_matrix_type;
91  typedef typename row_matrix_type::mag_type mag_type;
92 
93  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.");
94 
95 
97 
98 
100  explicit SparsityFilter (const Teuchos::RCP<const row_matrix_type>& Matrix,
101  size_t AllowedNumEntries,
102  LocalOrdinal AllowedBandwidth = -Teuchos::ScalarTraits<LocalOrdinal>::one());
104  virtual ~SparsityFilter();
105 
107 
109 
112 
113 
116 
119 
122 
125 
128 
130  virtual global_size_t getGlobalNumRows() const;
131 
133  virtual global_size_t getGlobalNumCols() const;
134 
136  virtual size_t getNodeNumRows() const;
137 
139  virtual size_t getNodeNumCols() const;
140 
142  virtual GlobalOrdinal getIndexBase() const;
143 
145  virtual global_size_t getGlobalNumEntries() const;
146 
148  virtual size_t getNodeNumEntries() const;
149 
151 
152  virtual size_t getNumEntriesInGlobalRow(GlobalOrdinal globalRow) const;
153 
155 
156  virtual size_t getNumEntriesInLocalRow(LocalOrdinal localRow) const;
157 
159  virtual size_t getGlobalMaxNumRowEntries() const;
160 
162  virtual size_t getNodeMaxNumRowEntries() const;
163 
165  virtual bool hasColMap() const;
166 
168  virtual bool isLocallyIndexed() const;
169 
171  virtual bool isGloballyIndexed() const;
172 
174  virtual bool isFillComplete() const;
175 
177  virtual bool supportsRowViews() const;
178 
180 
182 
183 
185 
195  virtual void getGlobalRowCopy(GlobalOrdinal GlobalRow,
196  const Teuchos::ArrayView<GlobalOrdinal> &Indices,
197  const Teuchos::ArrayView<Scalar> &Values,
198  size_t &NumEntries) const;
199 
201 
211  virtual void getLocalRowCopy(LocalOrdinal DropRow,
212  const Teuchos::ArrayView<LocalOrdinal> &Indices,
213  const Teuchos::ArrayView<Scalar> &Values,
214  size_t &NumEntries) const ;
215 
217 
226  virtual void getGlobalRowView(GlobalOrdinal GlobalRow,
228  Teuchos::ArrayView<const Scalar> &values) const;
229 
231 
240  virtual void getLocalRowView(LocalOrdinal DropRow,
242  Teuchos::ArrayView<const Scalar> &values) const;
243 
245 
247  virtual void getLocalDiagCopy(Tpetra::Vector<Scalar,LocalOrdinal,GlobalOrdinal,Node> &diag) const;
248 
250 
252 
253 
263  virtual void leftScale(const Tpetra::Vector<Scalar, LocalOrdinal, GlobalOrdinal, Node>& x);
264 
274  virtual void rightScale(const Tpetra::Vector<Scalar, LocalOrdinal, GlobalOrdinal, Node>& x);
275 
277 
280  virtual mag_type getFrobeniusNorm() const;
281 
283 
288  virtual void apply(const Tpetra::MultiVector<Scalar,LocalOrdinal,GlobalOrdinal,Node> &X,
289  Tpetra::MultiVector<Scalar,LocalOrdinal,GlobalOrdinal,Node> &Y,
291  Scalar alpha = Teuchos::ScalarTraits<Scalar>::one(),
292  Scalar beta = Teuchos::ScalarTraits<Scalar>::zero()) const;
293 
295  virtual bool hasTransposeApply() const;
296 
298 private:
299 
302 
304  size_t AllowedNumEntries_;
306  LocalOrdinal AllowedBandwidth_;
308  size_t NumRows_;
310  size_t NumNonzeros_;
312  size_t MaxNumEntries_;
314  size_t MaxNumEntriesA_;
316  std::vector<size_t> NumEntries_;
318  mutable Teuchos::Array<LocalOrdinal> Indices_;
320  mutable Teuchos::Array<Scalar> Values_;
321 
322 };// class SparsityFilter
323 
324 }// namespace Ifpack2
325 
326 #endif /* IFPACK2_SPARSITYFILTER_DECL_HPP */
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:386
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 bool hasTransposeApply() const
Indicates whether this operator supports applying the adjoint operator.
Definition: Ifpack2_SparsityFilter_def.hpp:429
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 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
All Ifpack2 implementations of Tpetra::RowMatrix must inherit from this class.
Definition: Ifpack2_Details_RowMatrix.hpp:63
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 GlobalOrdinal getIndexBase() const
Returns the index base for global indices for this matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:200
virtual void getGlobalRowCopy(GlobalOrdinal GlobalRow, const Teuchos::ArrayView< GlobalOrdinal > &Indices, const Teuchos::ArrayView< Scalar > &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:277
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
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:364
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 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 Teuchos::RCP< const Tpetra::RowGraph< LocalOrdinal, GlobalOrdinal, Node > > getGraph() const
Returns the RowGraph associated with this matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:164
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 ~SparsityFilter()
Destructor.
Definition: Ifpack2_SparsityFilter_def.hpp:109
virtual global_size_t getGlobalNumRows() const
Returns the number of global rows in this matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:171
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 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 global_size_t getGlobalNumCols() const
Returns the number of global columns in this matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:178
virtual bool hasColMap() const
Indicates whether this matrix has a well-defined column map.
Definition: Ifpack2_SparsityFilter_def.hpp:249
virtual mag_type getFrobeniusNorm() const
Returns the Frobenius norm of the matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:443
virtual size_t getNodeNumEntries() const
Returns the local number of entries in this matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:214
Drop entries of a matrix, based on the sparsity pattern.
Definition: Ifpack2_SparsityFilter_decl.hpp:82
virtual size_t getGlobalMaxNumRowEntries() const
Returns the maximum number of entries across all rows/columns on all nodes.
Definition: Ifpack2_SparsityFilter_def.hpp:235
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 global_size_t getGlobalNumEntries() const
Returns the global number of entries in this matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:207
virtual bool isFillComplete() const
Returns true if fillComplete() has been called.
Definition: Ifpack2_SparsityFilter_def.hpp:270
virtual void getLocalRowView(LocalOrdinal DropRow, Teuchos::ArrayView< const LocalOrdinal > &indices, Teuchos::ArrayView< const Scalar > &values) const
Extract a const, non-persisting view of local indices in a specified row of the matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:355
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:379
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:372
virtual bool supportsRowViews() const
Returns true if RowViews are supported.
Definition: Ifpack2_SparsityFilter_def.hpp:436
virtual void getLocalRowCopy(LocalOrdinal DropRow, const Teuchos::ArrayView< LocalOrdinal > &Indices, const Teuchos::ArrayView< Scalar > &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:287
virtual void getGlobalRowView(GlobalOrdinal GlobalRow, Teuchos::ArrayView< const GlobalOrdinal > &indices, Teuchos::ArrayView< const Scalar > &values) const
Extract a const, non-persisting view of global indices in a specified row of the matrix.
Definition: Ifpack2_SparsityFilter_def.hpp:346