Class of matvec with the Schur Complement. More...

#include <parallel_gemslr.hpp>

Public Member Functions
	ParallelGemslrSchurMatrixClass ()
	The constructor of ParallelGemslrSchurMatrixClass. More...

	ParallelGemslrSchurMatrixClass (const ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType > &precond)
	The copy constructor of ParallelGemslrSchurMatrixClass. More...

	ParallelGemslrSchurMatrixClass (ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType > &&precond)
	The move constructor of ParallelGemslrSchurMatrixClass. More...

ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType > &	operator= (const ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType > &precond)
	The operator = of ParallelGemslrSchurMatrixClass. More...

ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType > &	operator= (ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType > &&precond)
	The operator = of ParallelGemslrSchurMatrixClass. More...

virtual	~ParallelGemslrSchurMatrixClass ()
	The destructor of GemslrEBFCMatrixClass. More...

int	Setup (int level, int option, ParallelGemslrClass< MatrixType, VectorType, DataType > &gemslr)
	Set the current matrix to a certain GEMSLR level. More...

int	SetupVectorPtrStr (VectorType &v)
	Set the structure of a vector pointer that has same row partition as this matrix. More...

int	Clear ()
	Free the current matrix. More...

int	MatVec (char trans, const DataType &alpha, VectorType &x, const DataType &beta, VectorType &y)
	In place csr Matrix-Vector product ==> y := alphaAx + betay, or y := alphaA'x + betay. More...

int	Solve (VectorType &x, VectorType &rhs)
	Solve phase. Call this function after Setup. Solve with cusparse if unified memory/device memory is used. More...

int	GetMpiInfo (int &np, int &myid, MPI_Comm &comm) const
	Get comm, np, and myid. Get the global one. More...

MPI_Comm	GetComm () const
	Get the MPI_comm. More...

Public Attributes
VectorType	_temp_v
	Temp vector for the Arnoldi. More...

Detailed Description

template<class MatrixType, class VectorType, typename DataType>
class pargemslr::ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType >

Class of matvec with the Schur Complement.

Constructor & Destructor Documentation

◆ ParallelGemslrSchurMatrixClass() [1/3]

template<class MatrixType , class VectorType , typename DataType >

template pargemslr::precond_gemslr_schur_par_complexd::ParallelGemslrSchurMatrixClass ( )

The constructor of ParallelGemslrSchurMatrixClass. The default memory location is the host memory.

◆ ParallelGemslrSchurMatrixClass() [2/3]

template<class MatrixType , class VectorType , typename DataType >

pargemslr::ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType >::ParallelGemslrSchurMatrixClass ( const ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType > & precond )

The copy constructor of ParallelGemslrSchurMatrixClass.

◆ ParallelGemslrSchurMatrixClass() [3/3]

template<class MatrixType , class VectorType , typename DataType >

pargemslr::ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType >::ParallelGemslrSchurMatrixClass ( ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType > && precond )

The move constructor of ParallelGemslrSchurMatrixClass.

◆ ~ParallelGemslrSchurMatrixClass()

template<class MatrixType , class VectorType , typename DataType >

template pargemslr::precond_gemslr_schur_par_complexd::~ParallelGemslrSchurMatrixClass ( )

virtual

The destructor of GemslrEBFCMatrixClass. Simply a call to the free function.

Member Function Documentation

◆ Clear()

template<class MatrixType , class VectorType , typename DataType >

template int pargemslr::precond_gemslr_schur_par_complexd::Clear ( )

Free the current matrix.

Returns: Return error message.

◆ GetComm()

template<class MatrixType , class VectorType , typename DataType >

MPI_Comm pargemslr::ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType >::GetComm ( ) const

inline

Get the MPI_comm.

Returns: Return the MPI_comm.

◆ GetMpiInfo()

template<class MatrixType , class VectorType , typename DataType >

int pargemslr::ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType >::GetMpiInfo	(	int &	np,
		int &	myid,
		MPI_Comm &	comm
	)		const

inline

Get comm, np, and myid. Get the global one.

Parameters

[in]	np	The number of processors.
[in]	myid	The local MPI rank number.
[in]	comm	The MPI_Comm.

Returns: Return error message.

◆ MatVec()

template<class MatrixType , class VectorType , typename DataType >

int pargemslr::ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType >::MatVec	(	char	trans,
		const DataType &	alpha,
		VectorType &	x,
		const DataType &	beta,
		VectorType &	y
	)

In place csr Matrix-Vector product ==> y := alpha*A*x + beta*y, or y := alpha*A'*x + beta*y.

Parameters

[in]	trans	Whether or not transpose matrix A.
[in]	alpha	The alpha value.
[in]	x	The left vector.
[in]	beta	The beta value.
[in,out]	y	The product vector.

Returns: Return error message.

◆ operator=() [1/2]

template<class MatrixType , class VectorType , typename DataType >

ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType > & pargemslr::ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType >::operator= ( const ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType > & precond )

The operator = of ParallelGemslrSchurMatrixClass.

◆ operator=() [2/2]

template<class MatrixType , class VectorType , typename DataType >

ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType > & pargemslr::ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType >::operator= ( ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType > && precond )

The operator = of ParallelGemslrSchurMatrixClass.

◆ Setup()

template<class MatrixType , class VectorType , typename DataType >

int pargemslr::ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType >::Setup	(	int	level,
		int	option,
		ParallelGemslrClass< MatrixType, VectorType, DataType > &	gemslr
	)

Set the current matrix to a certain GEMSLR level.

Parameters

[in]	level	The level.
[in]	option	The option.
[in]	gemslr	The GeMSLR structure.

Returns: Return error message.

◆ SetupVectorPtrStr()

template<class MatrixType , class VectorType , typename DataType >

int pargemslr::ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType >::SetupVectorPtrStr ( VectorType & v )

Set the structure of a vector pointer that has same row partition as this matrix.

Parameters

[in,out] v The target vector.

Returns: Return error message.

◆ Solve()

template<class MatrixType , class VectorType , typename DataType >

int pargemslr::ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType >::Solve	(	VectorType &	x,
		VectorType &	rhs
	)

Solve phase. Call this function after Setup. Solve with cusparse if unified memory/device memory is used.

Parameters

[in,out]	x	The initial guess.
[in]	rhs	The right-hand-side.

Returns: Return error message.

Member Data Documentation

◆ _temp_v

template<class MatrixType , class VectorType , typename DataType >

VectorType pargemslr::ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType >::_temp_v

Temp vector for the Arnoldi.

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

SRC/preconditioners/parallel_gemslr.hpp
SRC/preconditioners/parallel_gemslr.cpp

Public Member Functions

Public Attributes

Detailed Description

template<class MatrixType, class VectorType, typename DataType> class pargemslr::ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType >

Constructor & Destructor Documentation

◆ ParallelGemslrSchurMatrixClass() [1/3]

◆ ParallelGemslrSchurMatrixClass() [2/3]

◆ ParallelGemslrSchurMatrixClass() [3/3]

◆ ~ParallelGemslrSchurMatrixClass()

Member Function Documentation

◆ Clear()

◆ GetComm()

◆ GetMpiInfo()

◆ MatVec()

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ Setup()

◆ SetupVectorPtrStr()

◆ Solve()

Member Data Documentation

◆ _temp_v

template<class MatrixType, class VectorType, typename DataType>
class pargemslr::ParallelGemslrSchurMatrixClass< MatrixType, VectorType, DataType >