Distributed memory block low rank matrix. More...

#include <BLRMatrixMPI.hpp>

Inheritance diagram for strumpack::BLR::BLRMatrixMPI< scalar_t >:

Collaboration diagram for strumpack::BLR::BLRMatrixMPI< scalar_t >:

Public Member Functions
	BLRMatrixMPI (const ProcessorGrid2D &grid, const vec_t &Rt, const vec_t &Ct)

std::size_t	rows () const override

std::size_t	cols () const override

std::size_t	memory () const override

std::size_t	nonzeros () const override

std::size_t	rank () const override

std::size_t	total_memory () const

std::size_t	total_nonzeros () const

std::size_t	max_rank () const

const MPIComm &	Comm () const

const ProcessorGrid2D *	grid () const

bool	active () const

void	fill (scalar_t v)

void	fill_col (scalar_t v, std::size_t k, std::size_t CP)

std::vector< int >	factor (const Opts_t &opts)

std::vector< int >	factor (const adm_t &adm, const Opts_t &opts)

std::vector< int >	factor_col (const adm_t &adm, const Opts_t &opts, const std::function< void(int, bool, std::size_t)> &blockcol)

void	laswp (const std::vector< int > &piv, bool fwd)

void	compress (const Opts_t &opts)

DistM_t	to_ScaLAPACK (const BLACSGrid *g) const

void	to_ScaLAPACK (DistM_t &A) const

void	print (const std::string &name)

std::size_t	rowblocks () const

std::size_t	colblocks () const

std::size_t	rowblockslocal () const

std::size_t	colblockslocal () const

std::size_t	tilerows (std::size_t i) const

std::size_t	tilecols (std::size_t j) const

std::size_t	tileroff (std::size_t i) const

std::size_t	tilecoff (std::size_t j) const

int	rg2p (std::size_t i) const

int	cg2p (std::size_t j) const

std::size_t	rl2g (std::size_t i) const

std::size_t	cl2g (std::size_t j) const

std::size_t	rg2t (std::size_t i) const

std::size_t	cg2t (std::size_t j) const

std::size_t	lrows () const

std::size_t	lcols () const

scalar_t	operator() (std::size_t i, std::size_t j) const

scalar_t &	operator() (std::size_t i, std::size_t j)

scalar_t	get_element_and_decompress_HODBF (int tr, int tc, int lr, int lc)

void	decompress_local_columns (int c_min, int c_max)

void	remove_tiles_before_local_column (int c_min, int c_max)

const scalar_t &	global (std::size_t i, std::size_t j) const

scalar_t &	global (std::size_t i, std::size_t j)

Public Member Functions inherited from strumpack::structured::StructuredMatrix< scalar_t >
virtual	~StructuredMatrix ()=default

virtual std::size_t	local_rows () const

virtual std::size_t	begin_row () const

virtual std::size_t	end_row () const

virtual const std::vector< int > &	dist () const

virtual const std::vector< int > &	rdist () const

virtual const std::vector< int > &	cdist () const

virtual void	mult (Trans op, const DenseMatrix< scalar_t > &x, DenseMatrix< scalar_t > &y) const

void	mult (Trans op, int m, const scalar_t x, int ldx, scalar_t y, int ldy) const

virtual void	mult (Trans op, const DistributedMatrix< scalar_t > &x, DistributedMatrix< scalar_t > &y) const

virtual void	factor ()

virtual void	solve (DenseMatrix< scalar_t > &b) const

virtual void	solve (int nrhs, scalar_t *b, int ldb) const

virtual void	solve (DistributedMatrix< scalar_t > &b) const

virtual void	shift (scalar_t s)

Static Public Member Functions
static std::vector< int >	partial_factor (BLRMPI_t &A11, BLRMPI_t &A12, BLRMPI_t &A21, BLRMPI_t &A22, const adm_t &adm, const Opts_t &opts)

static std::vector< int >	partial_factor_col (BLRMPI_t &F11, BLRMPI_t &F12, BLRMPI_t &F21, BLRMPI_t &F22, const adm_t &adm, const Opts_t &opts, const std::function< void(int, bool, std::size_t)> &blockcol)

static BLRMPI_t	from_ScaLAPACK (const DistM_t &A, const ProcessorGrid2D &g, const Opts_t &opts)

static BLRMPI_t	from_ScaLAPACK (const DistM_t &A, const ProcessorGrid2D &g, const vec_t &Rt, const vec_t &Ct)

Friends
template<typename T , typename I >
class	strumpack::ExtendAdd

template<typename T , typename I >
class	BLRExtendAdd

template<typename T >
void	trsv (UpLo ul, Trans ta, Diag d, const BLRMatrixMPI< T > &a, BLRMatrixMPI< T > &b)

template<typename T >
void	gemv (Trans ta, T alpha, const BLRMatrixMPI< T > &a, const BLRMatrixMPI< T > &x, T beta, BLRMatrixMPI< T > &y)

template<typename T >
void	trsm (Side s, UpLo ul, Trans ta, Diag d, T alpha, const BLRMatrixMPI< T > &a, BLRMatrixMPI< T > &b)

template<typename T >
void	gemm (Trans ta, Trans tb, T alpha, const BLRMatrixMPI< T > &a, const BLRMatrixMPI< T > &b, T beta, BLRMatrixMPI< T > &c)

Detailed Description

template<typename scalar_t>
class strumpack::BLR::BLRMatrixMPI< scalar_t >

Distributed memory block low rank matrix.

This is for non-symmetric matrices, but can be used with symmetric matrices as well. This class inherits from StructuredMatrix.

Template Parameters

scalar_t Can be float, double, std:complex<float> or std::complex<double>.

See also: structured::StructuredMatrix, BLRMatrix

Member Function Documentation

◆ cols()

template<typename scalar_t >

std::size_t strumpack::BLR::BLRMatrixMPI< scalar_t >::cols ( ) const

inlineoverridevirtual

Get number of columns in this matrix

Implements strumpack::structured::StructuredMatrix< scalar_t >.

◆ global()

template<typename scalar_t >

const scalar_t& strumpack::BLR::BLRMatrixMPI< scalar_t >::global	(	std::size_t	i,
		std::size_t	j
	)		const

Same as operator()(std::size_t i, std::size_t j), but with global indexing. This assumes the global element is stored locally, otherwise behaviour is undefined.

◆ memory()

template<typename scalar_t >

std::size_t strumpack::BLR::BLRMatrixMPI< scalar_t >::memory ( ) const

overridevirtual

Return the total amount of memory used by this matrix, in bytes.

Returns: Memory usage in bytes.

See also: nonzeros

Implements strumpack::structured::StructuredMatrix< scalar_t >.

◆ nonzeros()

template<typename scalar_t >

std::size_t strumpack::BLR::BLRMatrixMPI< scalar_t >::nonzeros ( ) const

overridevirtual

Return the total number of nonzeros stored by this matrix.

Returns: Nonzeros in the matrix representation.

See also: memory

Implements strumpack::structured::StructuredMatrix< scalar_t >.

◆ operator()()

template<typename scalar_t >

scalar_t strumpack::BLR::BLRMatrixMPI< scalar_t >::operator()	(	std::size_t	i,
		std::size_t	j
	)		const

Direct access to element with local indexing, only for dense tiles, for instance before the factorization/compression.

◆ rank()

template<typename scalar_t >

std::size_t strumpack::BLR::BLRMatrixMPI< scalar_t >::rank ( ) const

overridevirtual

Return the maximum rank of this matrix over all low-rank compressed blocks.

Returns: Maximum rank.

Implements strumpack::structured::StructuredMatrix< scalar_t >.

◆ rows()

template<typename scalar_t >

std::size_t strumpack::BLR::BLRMatrixMPI< scalar_t >::rows ( ) const

inlineoverridevirtual

Get number of rows in this matrix

Implements strumpack::structured::StructuredMatrix< scalar_t >.

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

/home/pieterg/LBL/STRUMPACK/src/BLR/BLRMatrixMPI.hpp

Public Member Functions

Static Public Member Functions

Friends

Detailed Description

template<typename scalar_t> class strumpack::BLR::BLRMatrixMPI< scalar_t >

Member Function Documentation

◆ cols()

◆ global()

◆ memory()

◆ nonzeros()

◆ operator()()

◆ rank()

◆ rows()

template<typename scalar_t>
class strumpack::BLR::BLRMatrixMPI< scalar_t >