TNL::Solvers::Linear::Preconditioners::Diagonal< Matrix > Class Template Reference

Diagonal (Jacobi) preconditioner for iterative solvers of linear systems. More...

#include <TNL/Solvers/Linear/Preconditioners/Diagonal.h>

Inheritance diagram for TNL::Solvers::Linear::Preconditioners::Diagonal< Matrix >:

Collaboration diagram for TNL::Solvers::Linear::Preconditioners::Diagonal< Matrix >:

Public Types
using	DeviceType = typename Matrix::DeviceType
	Device where the preconditioner will run on and auxiliary data will alloacted on.
using	IndexType = typename Matrix::IndexType
	Type for indexing.
using	MatrixType = Matrix
	Type of the matrix representing the linear system.
using	RealType = typename Matrix::RealType
	Floating point type used for computations.
Public Types inherited from TNL::Solvers::Linear::Preconditioners::Preconditioner< Matrix >
using	ConstVectorViewType = typename Traits< Matrix >::ConstVectorViewType
	Type for constant vector view.
using	DeviceType = typename Matrix::DeviceType
	Device where the solver will run on and auxiliary data will alloacted on.
using	IndexType = typename Matrix::IndexType
	Type for indexing.
using	MatrixPointer = std::shared_ptr< std::add_const_t< MatrixType > >
	Type of shared pointer to the matrix.
using	MatrixType = Matrix
	Type of the matrix representing the linear system.
using	RealType = typename Matrix::RealType
	Floating point type used for computations.
using	VectorViewType = typename Traits< Matrix >::VectorViewType
	Type for vector view.

Public Member Functions
virtual void	solve (ConstVectorViewType b, VectorViewType x) const override
	This method applies the preconditioner.
virtual void	update (const MatrixPointer &matrixPointer) override
	This method updates the preconditioner with respect to given matrix.
Public Member Functions inherited from TNL::Solvers::Linear::Preconditioners::Preconditioner< Matrix >
virtual	~Preconditioner ()=default
	Destructor of the preconditioner.
virtual bool	setup (const Config::ParameterContainer &parameters, const String &prefix="")
	Method for setup of the preconditioner of linear iterative solver based on configuration parameters.

Protected Types
using	VectorType = Containers::Vector< RealType, DeviceType, IndexType >

Protected Attributes
VectorType	diagonal

Additional Inherited Members
Static Public Member Functions inherited from TNL::Solvers::Linear::Preconditioners::Preconditioner< Matrix >
static void	configSetup (Config::ConfigDescription &config, const String &prefix="")
	This method defines configuration entries for setup of the preconditioner of linear iterative solver.

Detailed Description

template<typename Matrix>
class TNL::Solvers::Linear::Preconditioners::Diagonal< Matrix >

Diagonal (Jacobi) preconditioner for iterative solvers of linear systems.

See detailed description.

See TNL::Solvers::Linear::Preconditioners::Preconditioner for example of setup with a linear solver.

Template Parameters

Matrix

is type of the matrix describing the linear system.

Member Typedef Documentation

DeviceType

template<typename Matrix>

using TNL::Solvers::Linear::Preconditioners::Diagonal< Matrix >::DeviceType = typename Matrix::DeviceType

Device where the preconditioner will run on and auxiliary data will alloacted on.

See Devices::Host or Devices::Cuda.

Member Function Documentation

solve()

template<typename Matrix>

void TNL::Solvers::Linear::Preconditioners::Diagonal< Matrix >::solve ( ConstVectorViewType b, VectorViewType x ) const

overridevirtual

This method applies the preconditioner.

Parameters

b	is the input vector the preconditioner is applied on.
x	is the result of the preconditioning.

Reimplemented from TNL::Solvers::Linear::Preconditioners::Preconditioner< Matrix >.

update()

template<typename Matrix>

void TNL::Solvers::Linear::Preconditioners::Diagonal< Matrix >::update ( const MatrixPointer & matrixPointer )

overridevirtual

This method updates the preconditioner with respect to given matrix.

Parameters

matrixPointer

smart pointer (std::shared_ptr) to matrix the preconditioner is related to.

Reimplemented from TNL::Solvers::Linear::Preconditioners::Preconditioner< Matrix >.

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

• src/TNL/Solvers/Linear/Preconditioners/Diagonal.h
• src/TNL/Solvers/Linear/Preconditioners/Diagonal.hpp