TNL::Matrices::HypreCSRMatrix Class Reference

Wrapper for Hypre's sequential CSR matrix. More...

#include <TNL/Matrices/HypreCSRMatrix.h>

Public Types
using	ColumnIndexesVectorType = Containers::Vector< IndexType, DeviceType, IndexType >
using	ColumnIndexesViewType = typename ColumnIndexesVectorType::ViewType
using	ConstColumnIndexesViewType = typename ColumnIndexesVectorType::ConstViewType
using	ConstSegmentsViewType = Algorithms::Segments::CSRView< DeviceType, std::add_const_t< IndexType > >
using	ConstValuesViewType = typename ValuesViewType::ConstViewType
using	ConstViewType = typename MatrixType::ConstViewType
using	DeviceType = HYPRE_Device
using	IndexType = HYPRE_Int
using	MatrixType = SparseMatrix< RealType, DeviceType, IndexType, GeneralMatrix, Algorithms::Segments::CSR >
using	RealType = HYPRE_Real
using	SegmentsViewType = Algorithms::Segments::CSRView< DeviceType, IndexType >
using	ValuesViewType = Containers::VectorView< RealType, DeviceType, IndexType >
using	ValueType = RealType
using	ViewType = typename MatrixType::ViewType

Public Member Functions
	HypreCSRMatrix (const HypreCSRMatrix &other)=delete
	HypreCSRMatrix (hypre_CSRMatrix *handle, bool take_ownership=true)
	Convert Hypre's format to HypreCSRMatrix.
	HypreCSRMatrix (HypreCSRMatrix &&other) noexcept
	HypreCSRMatrix (IndexType rows, IndexType columns, ValuesViewType values, ColumnIndexesViewType columnIndexes, ColumnIndexesViewType rowOffsets)
	HypreCSRMatrix (ViewType view)
void	bind (hypre_CSRMatrix *handle, bool take_ownership=true)
	Convert Hypre's format to HypreCSRMatrix.
void	bind (HypreCSRMatrix &matrix)
void	bind (IndexType rows, IndexType columns, ValuesViewType values, ColumnIndexesViewType columnIndexes, ColumnIndexesViewType rowOffsets)
	Drop previously set data (deallocate if the matrix was the owner) and bind to the given data (i.e., the matrix does not become the owner).
void	bind (MatrixType &matrix)
void	bind (ViewType view)
ColumnIndexesViewType	getColumnIndexes ()
ConstColumnIndexesViewType	getColumnIndexes () const
IndexType	getColumns () const
ConstViewType	getConstView () const
IndexType	getNonzeroElementsCount () const
ColumnIndexesViewType	getRowOffsets ()
ConstColumnIndexesViewType	getRowOffsets () const
IndexType	getRows () const
SegmentsViewType	getSegments ()
ConstSegmentsViewType	getSegments () const
ValuesViewType	getValues ()
ConstValuesViewType	getValues () const
ViewType	getView ()
	operator const hypre_CSRMatrix * () const noexcept
	operator HYPRE_CSRMatrix () noexcept
	operator hypre_CSRMatrix * () noexcept
HypreCSRMatrix &	operator= (const HypreCSRMatrix &other)=delete
HypreCSRMatrix &	operator= (HypreCSRMatrix &&other) noexcept
void	reorderDiagonalEntries ()
	Reorders the column and data arrays of a square matrix, such that the first entry in each row is the diagonal one.
void	reset ()
	Reset the matrix to empty state.
void	setDimensions (IndexType rows, IndexType cols)
	Set the new matrix dimensions.
template<typename RowCapacitiesVector>
void	setRowCapacities (const RowCapacitiesVector &rowCapacities)
template<typename InVector, typename OutVector>
void	vectorProduct (const InVector &inVector, OutVector &outVector, RealType matrixMultiplicator=1.0, RealType outVectorMultiplicator=0.0, IndexType begin=0, IndexType end=0) const

Protected Attributes
hypre_CSRMatrix *	m = nullptr
bool	owns_handle = true

Detailed Description

Wrapper for Hypre's sequential CSR matrix.

Links to upstream sources:

• https://github.com/hypre-space/hypre/blob/master/src/seq_mv/csr_matrix.h
• https://github.com/hypre-space/hypre/blob/master/src/seq_mv/csr_matrix.c
• https://github.com/hypre-space/hypre/blob/master/src/seq_mv/seq_mv.h (catch-all interface)

Constructor & Destructor Documentation

HypreCSRMatrix()

TNL::Matrices::HypreCSRMatrix::HypreCSRMatrix ( hypre_CSRMatrix * handle, bool take_ownership = true )

inlineexplicit

Convert Hypre's format to HypreCSRMatrix.

Parameters

handle	is the Hypre vector handle.
take_ownership	indicates if the matrix should take ownership of the handle, i.e. whether to call hypre_CSRMatrixDestroy when it does not need it anymore.

Member Function Documentation

bind()

void TNL::Matrices::HypreCSRMatrix::bind ( hypre_CSRMatrix * handle, bool take_ownership = true )

inline

Convert Hypre's format to HypreCSRMatrix.

Parameters

handle	is the Hypre vector handle.
take_ownership	indicates if the matrix should take ownership of the handle, i.e. whether to call hypre_CSRMatrixDestroy when it does not need it anymore.

reorderDiagonalEntries()

void TNL::Matrices::HypreCSRMatrix::reorderDiagonalEntries ( )

inline

Reorders the column and data arrays of a square matrix, such that the first entry in each row is the diagonal one.

Note that the hypre_CSRMatrixReorder function only swaps the diagonal and first entries in the row, but this function also shifts the subdiagonal entries to ensure that the column indices (except for the diagonal one) remain in the original order.

setDimensions()

void TNL::Matrices::HypreCSRMatrix::setDimensions ( IndexType rows, IndexType cols )

inline

Set the new matrix dimensions.

• if the matrix previously owned data, they are deallocated
• new size is set
• the matrix is initialized with hypre_CSRMatrixInitialize (i.e., data are allocated)

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The documentation for this class was generated from the following file:

• src/TNL/Matrices/HypreCSRMatrix.h