43 #ifndef IFPACK2_SINGLETONFILTER_DEF_HPP 44 #define IFPACK2_SINGLETONFILTER_DEF_HPP 45 #include "Ifpack2_SingletonFilter_decl.hpp" 47 #include "Tpetra_ConfigDefs.hpp" 48 #include "Tpetra_RowMatrix.hpp" 49 #include "Tpetra_Map.hpp" 50 #include "Tpetra_MultiVector.hpp" 51 #include "Tpetra_Vector.hpp" 55 template<
class MatrixType>
66 if (A_->getComm()->getSize() != 1 || A_->getNodeNumRows() != A_->getGlobalNumRows()) {
67 throw std::runtime_error(
"Ifpack2::SingeltonFilter can be used with Comm().getSize() == 1 only. This class is a tool for Ifpack2_AdditiveSchwarz, and it is not meant to be used otherwise.");
71 size_t NumRowsA_ = A_->getNodeNumRows();
75 MaxNumEntriesA_ = A_->getNodeMaxNumRowEntries();
78 Indices_.
resize(MaxNumEntriesA_);
79 Values_.
resize(MaxNumEntriesA_);
82 Reorder_.resize(NumRowsA_);
83 Reorder_.assign(Reorder_.size(),-1);
87 for (
size_t i = 0 ; i < NumRowsA_ ; ++i) {
89 A_->getLocalRowCopy(i,Indices_,Values_,Nnz);
91 Reorder_[i] = NumRows_++;
99 InvReorder_.resize(NumRows_);
100 for (
size_t i = 0 ; i < NumRowsA_ ; ++i) {
103 InvReorder_[Reorder_[i]] = i;
105 NumEntries_.resize(NumRows_);
106 SingletonIndex_.resize(NumSingletons_);
111 for (
size_t i = 0 ; i < NumRowsA_ ; ++i) {
113 A_->getLocalRowCopy(i,Indices_,Values_,Nnz);
114 LocalOrdinal ii = Reorder_[i];
116 NumEntries_[ii] = Nnz;
118 if (Nnz > MaxNumEntries_)
119 MaxNumEntries_ = Nnz;
122 SingletonIndex_[count] = i;
128 ReducedMap_ = Teuchos::rcp(
new Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node>(NumRows_,0,A_->getComm()) );
131 Diagonal_ = Teuchos::rcp(
new Tpetra::Vector<Scalar,LocalOrdinal,GlobalOrdinal,Node>(ReducedMap_) );
133 Tpetra::Vector<Scalar,LocalOrdinal,GlobalOrdinal,Node> DiagonalA(A_->getRowMap());
134 A_->getLocalDiagCopy(DiagonalA);
136 for (
size_t i = 0 ; i < NumRows_ ; ++i) {
137 LocalOrdinal ii = InvReorder_[i];
138 Diagonal_->replaceLocalValue((LocalOrdinal)i,DiagonalAview[ii]);
142 template<
class MatrixType>
145 template<
class MatrixType>
149 return A_->getComm();
152 template<
class MatrixType>
156 return A_->getNode();
159 template<
class MatrixType>
160 Teuchos::RCP<
const Tpetra::Map<
typename MatrixType::local_ordinal_type,
161 typename MatrixType::global_ordinal_type,
162 typename MatrixType::node_type> >
168 template<
class MatrixType>
169 Teuchos::RCP<
const Tpetra::Map<
typename MatrixType::local_ordinal_type,
170 typename MatrixType::global_ordinal_type,
171 typename MatrixType::node_type> >
177 template<
class MatrixType>
178 Teuchos::RCP<
const Tpetra::Map<
typename MatrixType::local_ordinal_type,
179 typename MatrixType::global_ordinal_type,
180 typename MatrixType::node_type> >
186 template<
class MatrixType>
187 Teuchos::RCP<
const Tpetra::Map<
typename MatrixType::local_ordinal_type,
188 typename MatrixType::global_ordinal_type,
189 typename MatrixType::node_type> >
195 template<
class MatrixType>
196 Teuchos::RCP<
const Tpetra::RowGraph<
typename MatrixType::local_ordinal_type,
197 typename MatrixType::global_ordinal_type,
198 typename MatrixType::node_type> >
201 throw std::runtime_error(
"Ifpack2::SingletonFilter: does not support getGraph.");
204 template<
class MatrixType>
210 template<
class MatrixType>
216 template<
class MatrixType>
222 template<
class MatrixType>
228 template<
class MatrixType>
231 return A_->getIndexBase();
234 template<
class MatrixType>
240 template<
class MatrixType>
246 template<
class MatrixType>
249 throw std::runtime_error(
"Ifpack2::SingletonFilter does not implement getNumEntriesInGlobalRow.");
252 template<
class MatrixType>
255 return NumEntries_[localRow];
258 template<
class MatrixType>
261 return MaxNumEntries_;
264 template<
class MatrixType>
267 return MaxNumEntries_;
270 template<
class MatrixType>
276 template<
class MatrixType>
279 return A_->isLocallyIndexed();
282 template<
class MatrixType>
285 return A_->isGloballyIndexed();
288 template<
class MatrixType>
291 return A_->isFillComplete();
294 template<
class MatrixType>
300 throw std::runtime_error(
"Ifpack2::SingletonFilter does not implement getGlobalRowCopy.");
303 template<
class MatrixType>
307 size_t &NumEntries)
const 309 TEUCHOS_TEST_FOR_EXCEPTION((LocalRow < 0 || (
size_t) LocalRow >= NumRows_ || (
size_t) Indices.
size() < NumEntries_[LocalRow]), std::runtime_error,
"Ifpack2::SingletonFilter::getLocalRowCopy invalid row or array size.");
312 LocalOrdinal ARow = InvReorder_[LocalRow];
313 A_->getLocalRowCopy(ARow,Indices_(),Values_(),Nnz);
317 for (
size_t i = 0 ; i < Nnz ; ++i) {
318 LocalOrdinal ii = Reorder_[Indices_[i]];
320 Indices[NumEntries] = ii;
321 Values[NumEntries] = Values_[i];
328 template<
class MatrixType>
333 throw std::runtime_error(
"Ifpack2::SingletonFilter: does not support getGlobalRowView.");
336 template<
class MatrixType>
341 throw std::runtime_error(
"Ifpack2::SingletonFilter: does not support getLocalRowView.");
344 template<
class MatrixType>
348 return A_->getLocalDiagCopy(diag);
351 template<
class MatrixType>
354 throw std::runtime_error(
"Ifpack2::SingletonFilter does not support leftScale.");
357 template<
class MatrixType>
360 throw std::runtime_error(
"Ifpack2::SingletonFilter does not support rightScale.");
363 template<
class MatrixType>
365 Tpetra::MultiVector<Scalar,LocalOrdinal,GlobalOrdinal,Node> &Y,
370 typedef Scalar DomainScalar;
371 typedef Scalar RangeScalar;
376 "Ifpack2::SingletonFilter::apply ERROR: X.getNumVectors() != Y.getNumVectors().");
383 size_t NumVectors = Y.getNumVectors();
386 for (
size_t i = 0 ; i < NumRows_ ; ++i) {
389 getLocalRowCopy(i,Indices_(),Values_(),Nnz);
390 if (mode==Teuchos::NO_TRANS){
391 for (
size_t j = 0 ; j < Nnz ; ++j)
392 for (
size_t k = 0 ; k < NumVectors ; ++k)
393 y_ptr[k][i] += (RangeScalar)Values_[j] * (RangeScalar)x_ptr[k][Indices_[j]];
395 else if (mode==Teuchos::TRANS){
396 for (
size_t j = 0 ; j < Nnz ; ++j)
397 for (
size_t k = 0 ; k < NumVectors ; ++k)
398 y_ptr[k][Indices_[j]] += (RangeScalar)Values_[j] * (RangeScalar)x_ptr[k][i];
401 for (
size_t j = 0 ; j < Nnz ; ++j)
402 for (
size_t k = 0 ; k < NumVectors ; ++k)
408 template<
class MatrixType>
414 template<
class MatrixType>
420 template<
class MatrixType>
422 Tpetra::MultiVector<Scalar,LocalOrdinal,GlobalOrdinal,Node>& LHS)
424 this->
template SolveSingletonsTempl<Scalar,Scalar>(RHS, LHS);
427 template<
class MatrixType>
428 template<
class DomainScalar,
class RangeScalar>
430 Tpetra::MultiVector<RangeScalar,LocalOrdinal,GlobalOrdinal,Node>& LHS)
435 for (
size_t i = 0 ; i < NumSingletons_ ; ++i) {
436 LocalOrdinal ii = SingletonIndex_[i];
439 A_->getLocalRowCopy(ii,Indices_(),Values_(),Nnz);
440 for (
size_t j = 0 ; j < Nnz ; ++j) {
441 if (Indices_[j] == ii) {
442 for (
size_t k = 0 ; k < LHS.getNumVectors() ; ++k)
443 LHS_ptr[k][ii] = (RangeScalar)RHS_ptr[k][ii] / (RangeScalar)Values_[j];
449 template<
class MatrixType>
451 const Tpetra::MultiVector<Scalar,LocalOrdinal,GlobalOrdinal,Node>& RHS,
452 Tpetra::MultiVector<Scalar,LocalOrdinal,GlobalOrdinal,Node>& ReducedRHS)
454 this->
template CreateReducedRHSTempl<Scalar,Scalar>(LHS, RHS, ReducedRHS);
457 template<
class MatrixType>
458 template<
class DomainScalar,
class RangeScalar>
460 const Tpetra::MultiVector<RangeScalar,LocalOrdinal,GlobalOrdinal,Node>& RHS,
461 Tpetra::MultiVector<RangeScalar,LocalOrdinal,GlobalOrdinal,Node>& ReducedRHS)
467 size_t NumVectors = LHS.getNumVectors();
469 for (
size_t i = 0 ; i < NumRows_ ; ++i)
470 for (
size_t k = 0 ; k < NumVectors ; ++k)
471 ReducedRHS_ptr[k][i] = RHS_ptr[k][InvReorder_[i]];
473 for (
size_t i = 0 ; i < NumRows_ ; ++i) {
474 LocalOrdinal ii = InvReorder_[i];
476 A_->getLocalRowCopy(ii,Indices_(),Values_(),Nnz);
478 for (
size_t j = 0 ; j < Nnz ; ++j) {
479 if (Reorder_[Indices_[j]] == -1) {
480 for (
size_t k = 0 ; k < NumVectors ; ++k)
481 ReducedRHS_ptr[k][i] -= (RangeScalar)Values_[j] * (RangeScalar)LHS_ptr[k][Indices_[j]];
487 template<
class MatrixType>
489 Tpetra::MultiVector<Scalar,LocalOrdinal,GlobalOrdinal,Node>& LHS)
491 this->
template UpdateLHSTempl<Scalar,Scalar>(ReducedLHS, LHS);
494 template<
class MatrixType>
495 template<
class DomainScalar,
class RangeScalar>
497 Tpetra::MultiVector<RangeScalar,LocalOrdinal,GlobalOrdinal,Node>& LHS)
503 for (
size_t i = 0 ; i < NumRows_ ; ++i)
504 for (
size_t k = 0 ; k < LHS.getNumVectors() ; ++k)
505 LHS_ptr[k][InvReorder_[i]] = (RangeScalar)ReducedLHS_ptr[k][i];
508 template<
class MatrixType>
511 throw std::runtime_error(
"Ifpack2::SingletonFilter does not implement getFrobeniusNorm.");
516 #define IFPACK2_SINGLETONFILTER_INSTANT(S,LO,GO,N) \ 517 template class Ifpack2::SingletonFilter< Tpetra::RowMatrix<S, LO, GO, N> >; virtual void rightScale(const Tpetra::Vector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &x)
Scales the RowMatrix on the right with the Vector x.
Definition: Ifpack2_SingletonFilter_def.hpp:358
virtual ~SingletonFilter()
Destructor.
Definition: Ifpack2_SingletonFilter_def.hpp:143
virtual bool isLocallyIndexed() const
If matrix indices are in the local range, this function returns true. Otherwise, this function return...
Definition: Ifpack2_SingletonFilter_def.hpp:277
virtual global_size_t getGlobalNumRows() const
Returns the number of global rows in this matrix.
Definition: Ifpack2_SingletonFilter_def.hpp:205
virtual size_t getGlobalMaxNumRowEntries() const
Returns the maximum number of entries across all rows/columns on all nodes.
Definition: Ifpack2_SingletonFilter_def.hpp:259
virtual Teuchos::RCP< const Tpetra::Map< LocalOrdinal, GlobalOrdinal, Node > > getRangeMap() const
Returns the Map that describes the range distribution in this matrix.
Definition: Ifpack2_SingletonFilter_def.hpp:190
virtual void UpdateLHS(const Tpetra::MultiVector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &ReducedLHS, Tpetra::MultiVector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &LHS)
Updates a full LHS from a reduces LHS.
Definition: Ifpack2_SingletonFilter_def.hpp:488
virtual void CreateReducedRHS(const Tpetra::MultiVector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &LHS, const Tpetra::MultiVector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &RHS, Tpetra::MultiVector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &ReducedRHS)
Creates a RHS for the reduced singleton-free system.
Definition: Ifpack2_SingletonFilter_def.hpp:450
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_SingletonFilter_def.hpp:329
#define TEUCHOS_TEST_FOR_EXCEPTION(throw_exception_test, Exception, msg)
virtual void getLocalRowCopy(LocalOrdinal LocalRow, 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_SingletonFilter_def.hpp:304
virtual Teuchos::RCP< const Tpetra::Map< LocalOrdinal, GlobalOrdinal, Node > > getDomainMap() const
Returns the Map that describes the domain distribution in this matrix.
Definition: Ifpack2_SingletonFilter_def.hpp:181
virtual Teuchos::RCP< const Tpetra::Map< LocalOrdinal, GlobalOrdinal, Node > > getRowMap() const
Returns the Map that describes the row distribution in this matrix.
Definition: Ifpack2_SingletonFilter_def.hpp:163
virtual size_t getNodeNumRows() const
Returns the number of rows owned on the calling node.
Definition: Ifpack2_SingletonFilter_def.hpp:217
virtual bool hasTransposeApply() const
Indicates whether this operator supports applying the adjoint operator.
Definition: Ifpack2_SingletonFilter_def.hpp:409
virtual Teuchos::RCP< const Teuchos::Comm< int > > getComm() const
Returns the communicator.
Definition: Ifpack2_SingletonFilter_def.hpp:147
virtual mag_type getFrobeniusNorm() const
Returns the Frobenius norm of the matrix.
Definition: Ifpack2_SingletonFilter_def.hpp:509
virtual size_t getNumEntriesInGlobalRow(GlobalOrdinal globalRow) const
Returns the current number of entries on this node in the specified global row.
Definition: Ifpack2_SingletonFilter_def.hpp:247
virtual size_t getNodeNumEntries() const
Returns the local number of entries in this matrix.
Definition: Ifpack2_SingletonFilter_def.hpp:241
virtual global_size_t getGlobalNumCols() const
Returns the number of global columns in this matrix.
Definition: Ifpack2_SingletonFilter_def.hpp:211
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_SingletonFilter_def.hpp:364
LinearOp zero(const VectorSpace &vs)
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_SingletonFilter_def.hpp:345
void resize(size_type new_size, const value_type &x=value_type())
virtual bool hasColMap() const
Indicates whether this matrix has a well-defined column map.
Definition: Ifpack2_SingletonFilter_def.hpp:271
virtual Teuchos::RCP< const Tpetra::RowGraph< LocalOrdinal, GlobalOrdinal, Node > > getGraph() const
Returns the RowGraph associated with this matrix.
Definition: Ifpack2_SingletonFilter_def.hpp:199
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_SingletonFilter_def.hpp:223
SingletonFilter(const Teuchos::RCP< const Tpetra::RowMatrix< Scalar, LocalOrdinal, GlobalOrdinal, Node > > &Matrix)
Constructor.
Definition: Ifpack2_SingletonFilter_def.hpp:56
virtual Teuchos::RCP< Node > getNode() const
Returns the underlying node.
Definition: Ifpack2_SingletonFilter_def.hpp:154
virtual size_t getNumEntriesInLocalRow(LocalOrdinal localRow) const
Returns the current number of entries on this node in the specified local row.
Definition: Ifpack2_SingletonFilter_def.hpp:253
virtual void SolveSingletons(const Tpetra::MultiVector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &RHS, Tpetra::MultiVector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &LHS)
Solve the singleton components of the linear system.
Definition: Ifpack2_SingletonFilter_def.hpp:421
virtual bool supportsRowViews() const
Returns true if RowViews are supported.
Definition: Ifpack2_SingletonFilter_def.hpp:415
virtual void getLocalRowView(LocalOrdinal LocalRow, 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_SingletonFilter_def.hpp:337
Preconditioners and smoothers for Tpetra sparse matrices.
Definition: Ifpack2_AdditiveSchwarz_decl.hpp:72
virtual Teuchos::RCP< const Tpetra::Map< LocalOrdinal, GlobalOrdinal, Node > > getColMap() const
Returns the Map that describes the column distribution in this matrix.
Definition: Ifpack2_SingletonFilter_def.hpp:172
Filter based on matrix entries.
Definition: Ifpack2_SingletonFilter_decl.hpp:64
virtual void leftScale(const Tpetra::Vector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &x)
Scales the RowMatrix on the left with the Vector x.
Definition: Ifpack2_SingletonFilter_def.hpp:352
virtual bool isFillComplete() const
Returns true if fillComplete() has been called.
Definition: Ifpack2_SingletonFilter_def.hpp:289
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_SingletonFilter_def.hpp:295
virtual size_t getNodeMaxNumRowEntries() const
Returns the maximum number of entries across all rows/columns on this node.
Definition: Ifpack2_SingletonFilter_def.hpp:265
virtual global_size_t getGlobalNumEntries() const
Returns the global number of entries in this matrix.
Definition: Ifpack2_SingletonFilter_def.hpp:235
virtual GlobalOrdinal getIndexBase() const
Returns the index base for global indices for this matrix.
Definition: Ifpack2_SingletonFilter_def.hpp:229
virtual bool isGloballyIndexed() const
If matrix indices are in the global range, this function returns true. Otherwise, this function retur...
Definition: Ifpack2_SingletonFilter_def.hpp:283