Block-row distributed compressed sparse row storage. More...

#include <CSRMatrixMPI.hpp>

Inheritance diagram for strumpack::CSRMatrixMPI< scalar_t, integer_t >:

Collaboration diagram for strumpack::CSRMatrixMPI< scalar_t, integer_t >:

Public Member Functions
	CSRMatrixMPI (integer_t local_rows, const integer_t row_ptr, const integer_t col_ind, const scalar_t values, const integer_t dist, MPIComm comm, bool symm_sparse)

	CSRMatrixMPI (integer_t rows, integer_t local_rows, integer_t local_nnz, const integer_t *dist, MPIComm comm, bool symm_sparse)

	CSRMatrixMPI (integer_t lrows, const integer_t d_ptr, const integer_t d_ind, const scalar_t d_val, const integer_t o_ptr, const integer_t o_ind, const scalar_t o_val, const integer_t *garray, MPIComm comm, bool symm_sparse=false)

	CSRMatrixMPI (const CSRMatrix< scalar_t, integer_t > *A, MPIComm c, bool only_at_root)

integer_t	local_nnz () const

integer_t	local_rows () const

integer_t	begin_row () const

integer_t	end_row () const

const MPIComm &	Comm () const

MPI_Comm	comm () const

const std::vector< integer_t > &	dist () const

const integer_t &	dist (std::size_t p) const

real_t	norm1 () const override

void	spmv (const DenseM_t &x, DenseM_t &y) const override

void	spmv (const scalar_t x, scalar_t y) const override

void	permute (const integer_t iorder, const integer_t order) override

std::unique_ptr< CSRMatrix< scalar_t, integer_t > >	gather () const

std::unique_ptr< CSRGraph< integer_t > >	gather_graph () const

Match_t	matching (MatchingJob job, bool apply=true) override

Equil_t	equilibration () const override

void	equilibrate (const Equil_t &) override

void	permute_columns (const std::vector< integer_t > &perm) override

void	symmetrize_sparsity () override

int	read_matrix_market (const std::string &filename) override

real_t	max_scaled_residual (const DenseM_t &x, const DenseM_t &b) const override

real_t	max_scaled_residual (const scalar_t x, const scalar_t b) const override

std::unique_ptr< CSRMatrixMPI< scalar_t, integer_t > >	add_missing_diagonal (const scalar_t &s) const

CSRGraph< integer_t >	get_sub_graph (const std::vector< integer_t > &perm, const std::vector< std::pair< integer_t, integer_t >> &graph_ranges) const

CSRGraph< integer_t >	extract_graph (int ordering_level, integer_t lo, integer_t hi) const override

void	print () const override

void	print_dense (const std::string &name) const override

void	print_matrix_market (const std::string &filename) const override

void	check () const

Public Member Functions inherited from strumpack::CompressedSparseMatrix< scalar_t, integer_t >
virtual	~CompressedSparseMatrix ()

integer_t	size () const

integer_t	nnz () const

const integer_t *	ptr () const

const integer_t *	ind () const

const scalar_t *	val () const

integer_t *	ptr ()

integer_t *	ind ()

scalar_t *	val ()

const integer_t &	ptr (integer_t i) const

const integer_t &	ind (integer_t i) const

const scalar_t &	val (integer_t i) const

integer_t &	ptr (integer_t i)

integer_t &	ind (integer_t i)

scalar_t &	val (integer_t i)

bool	symm_sparse () const

void	set_symm_sparse (bool symm_sparse=true)

virtual void	permute (const std::vector< integer_t > &iorder, const std::vector< integer_t > &order)

virtual void	apply_matching (const Match_t &)

Detailed Description

template<typename scalar_t, typename integer_t>
class strumpack::CSRMatrixMPI< scalar_t, integer_t >

Block-row distributed compressed sparse row storage.

TODO: cleanup this class

use MPIComm
store the block diagonal as a CSRMatrix
...

Template Parameters

scalar_t	...
integer_t	TODO set a default for this?

Member Function Documentation

◆ matching()

template<typename scalar_t , typename integer_t >

Match_t strumpack::CSRMatrixMPI< scalar_t, integer_t >::matching	(	MatchingJob	job,
		bool	apply = `true`
	)

overridevirtual

This gathers the matrix to 1 process, then applies MC64 sequentially. lDr and gDc are only set when job == MatchingJob::MAX_DIAGONAL_PRODUCT_SCALING.

Parameters

job	The job type.
perm	Output, column permutation vector containing the GLOBAL column permutation, such that the column perm[j] of the original matrix is column j in the permuted matrix.
lDr	Row scaling factors, this is local, ie, Dr.size() == this->local_rows().
gDc	Col scaling factors, this is global, ie, Dc.size() == this->size()

Reimplemented from strumpack::CompressedSparseMatrix< scalar_t, integer_t >.

◆ permute()

template<typename scalar_t , typename integer_t >

void strumpack::CSRMatrixMPI< scalar_t, integer_t >::permute	(	const integer_t *	iorder,
		const integer_t *	order
	)

overridevirtual

TODO Obtain reordering Anew = A(iorder,iorder). In addition, entries of IND, VAL are sorted in increasing order

Reimplemented from strumpack::CompressedSparseMatrix< scalar_t, integer_t >.

◆ spmv() [1/2]

template<typename scalar_t , typename integer_t >

void strumpack::CSRMatrixMPI< scalar_t, integer_t >::spmv	(	const DenseM_t &	x,
		DenseM_t &	y
	)		const

overridevirtual

Sparse matrix times dense vector/matrix product y = this * x x and y can have multiple columns. y should be pre-allocated!

TODO make the public interface non-virtual

Parameters

x	input right hand-side vector/matrix, should satisfy x.size() == this->size()
y	output, result of y = this * x, should satisfy y.size() == this->size()

Implements strumpack::CompressedSparseMatrix< scalar_t, integer_t >.

◆ spmv() [2/2]

template<typename scalar_t , typename integer_t >

void strumpack::CSRMatrixMPI< scalar_t, integer_t >::spmv	(	const scalar_t *	x,
		scalar_t *	y
	)		const

overridevirtual

Sparse matrix times dense vector product y = this * x x and y can have multiple columns. y should be pre-allocated.

TODO make the public interface non-virtual

Parameters

x	input right hand-side vector/matrix, should be a pointer to an array of size size()
y	output, result of y = this * x, should be a pointer to an array of size size(), already allocated

Implements strumpack::CompressedSparseMatrix< scalar_t, integer_t >.

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

/home/pieterg/LBL/STRUMPACK/src/sparse/CSRMatrixMPI.hpp

Public Member Functions

Detailed Description

template<typename scalar_t, typename integer_t> class strumpack::CSRMatrixMPI< scalar_t, integer_t >

Member Function Documentation

◆ matching()

◆ permute()

◆ spmv() [1/2]

◆ spmv() [2/2]

template<typename scalar_t, typename integer_t>
class strumpack::CSRMatrixMPI< scalar_t, integer_t >