Common interface for preconditioning operators. More...

#include <PreconditionerBase.hpp>

Inheritance diagram for geos::PreconditionerBase< LAI >:

[legend]

Public Types
using	Base = LinearOperator< typename LAI::ParallelVector >
	Alias for base type.

using	Vector = typename Base::Vector
	Alias for vector type.

using	Matrix = typename LAI::ParallelMatrix
	Alias for matrix type.

Public Types inherited from geos::LinearOperator< LAI::ParallelVector >
using	Vector = LAI::ParallelVector
	Alias for template parameter.

Public Member Functions
virtual void	setup (Matrix const &mat)
	Compute the preconditioner from a matrix. More...

virtual void	clear ()
	Clean up the preconditioner setup. More...

virtual globalIndex	numGlobalRows () const override
	Get the number of global rows. More...

virtual globalIndex	numGlobalCols () const override
	Get the number of global columns. More...

virtual localIndex	numLocalRows () const override
	Get the number of local rows. More...

virtual localIndex	numLocalCols () const override
	Get the number of local columns. More...

virtual MPI_Comm	comm () const override
	Get the MPI communicator the matrix was created with. More...

bool	ready () const
	Chech if preconditioner is ready to use. More...

const Matrix &	matrix () const
	Access the matrix the preconditioner was computed from. More...

virtual bool	hasPreconditionerMatrix () const
	Check whether the preconditioner is available in matrix (explicit) form. More...

virtual const Matrix &	preconditionerMatrix () const
	Access the preconditioner in matrix form (whenever available). It must be overridden by the specific preconditioner. More...

Public Member Functions inherited from geos::LinearOperator< LAI::ParallelVector >
	LinearOperator ()=default
	Constructor.

virtual	~LinearOperator ()=default
	Destructor.

virtual void	apply (Vector const &src, Vector &dst) const=0
	Apply operator to a vector, `dst = this(src)`. More...

virtual void	residual (Vector const &x, Vector const &b, Vector &r) const
	Compute residual `r = b - this(x)`. More...

virtual globalIndex	numGlobalRows () const=0
	Get the number of global rows. More...

virtual globalIndex	numGlobalCols () const=0
	Get the number of global columns. More...

virtual localIndex	numLocalRows () const=0
	Get the number of local rows. More...

virtual localIndex	numLocalCols () const=0
	Get the number of local columns. More...

virtual MPI_Comm	comm () const=0
	Get the MPI communicator the matrix was created with. More...

Detailed Description

template<typename LAI>
class geos::PreconditionerBase< LAI >

Common interface for preconditioning operators.

Template Parameters

LAI	linear algebra interface providing vectors, matrices and solvers

Definition at line 31 of file PreconditionerBase.hpp.

Member Function Documentation

◆ clear()

template<typename LAI >

virtual void geos::PreconditionerBase< LAI >::clear ( )

inlinevirtual

Clean up the preconditioner setup.

Releases memory used and allows the matrix to be deleted cleanly. This method should be called before the matrix used to compute the preconditioner goes out of scope or is re-created. Some implementations require the matrix to outlive the preconditioner (for example, Trilinos/ML may crash the program if deleted after the matrix).

Note: Should be properly overridden in derived classes, which may call this method.

Reimplemented in geos::BlockPreconditioner< LAI >, geos::PreconditionerBlockJacobi< LAI >, geos::SuiteSparse< LAI >, geos::PetscPreconditioner, geos::HyprePreconditioner, geos::SuperLUDist< LAI >, geos::TrilinosPreconditioner, geos::HypreSolver, geos::PetscSolver, geos::SeparateComponentPreconditioner< LAI >, and geos::PreconditionerJacobi< LAI >.

Definition at line 70 of file PreconditionerBase.hpp.

◆ comm()

template<typename LAI >

virtual MPI_Comm geos::PreconditionerBase< LAI >::comm ( ) const

inlineoverridevirtual

Get the MPI communicator the matrix was created with.

Returns: MPI communicator passed in create...()

Note: when build without MPI, may return anything (MPI_Comm will be a mock type defined in MpiWrapper)

Definition at line 118 of file PreconditionerBase.hpp.

◆ hasPreconditionerMatrix()

template<typename LAI >

virtual bool geos::PreconditionerBase< LAI >::hasPreconditionerMatrix ( ) const

inlinevirtual

Check whether the preconditioner is available in matrix (explicit) form.

Returns: if the preconditioner is available in explicit form

Reimplemented in geos::PreconditionerBlockJacobi< LAI >, and geos::SeparateComponentPreconditioner< LAI >.

Definition at line 146 of file PreconditionerBase.hpp.

◆ matrix()

template<typename LAI >

const Matrix& geos::PreconditionerBase< LAI >::matrix ( ) const

inline

Access the matrix the preconditioner was computed from.

Returns: reference to the matrix (user's repsonsibility to ensure it's still valid)

Definition at line 136 of file PreconditionerBase.hpp.

◆ numGlobalCols()

template<typename LAI >

virtual globalIndex geos::PreconditionerBase< LAI >::numGlobalCols ( ) const

inlineoverridevirtual

Get the number of global columns.

Returns: Number of global columns in the operator.

Reimplemented in geos::PreconditionerJacobi< LAI >.

Definition at line 88 of file PreconditionerBase.hpp.

◆ numGlobalRows()

template<typename LAI >

virtual globalIndex geos::PreconditionerBase< LAI >::numGlobalRows ( ) const

inlineoverridevirtual

Get the number of global rows.

Returns: Number of global rows in the operator.

Reimplemented in geos::PreconditionerJacobi< LAI >.

Definition at line 79 of file PreconditionerBase.hpp.

◆ numLocalCols()

template<typename LAI >

virtual localIndex geos::PreconditionerBase< LAI >::numLocalCols ( ) const

inlineoverridevirtual

Get the number of local columns.

Returns: Number of local columns in the operator.

Definition at line 106 of file PreconditionerBase.hpp.

◆ numLocalRows()

template<typename LAI >

virtual localIndex geos::PreconditionerBase< LAI >::numLocalRows ( ) const

inlineoverridevirtual

Get the number of local rows.

Returns: Number of local rows in the operator.

Definition at line 97 of file PreconditionerBase.hpp.

◆ preconditionerMatrix()

template<typename LAI >

virtual const Matrix& geos::PreconditionerBase< LAI >::preconditionerMatrix ( ) const

inlinevirtual

Access the preconditioner in matrix form (whenever available). It must be overridden by the specific preconditioner.

Returns: reference to the preconditioner matrix

Reimplemented in geos::PreconditionerBlockJacobi< LAI >, and geos::SeparateComponentPreconditioner< LAI >.

Definition at line 156 of file PreconditionerBase.hpp.

◆ ready()

template<typename LAI >

bool geos::PreconditionerBase< LAI >::ready ( ) const

inline

Chech if preconditioner is ready to use.

Returns: true if compute() has been called but not clear().

Definition at line 127 of file PreconditionerBase.hpp.

◆ setup()

template<typename LAI >

virtual void geos::PreconditionerBase< LAI >::setup ( Matrix const & mat )

inlinevirtual

Compute the preconditioner from a matrix.

Parameters

mat	the matrix to precondition.

Reimplemented in geos::HyprePreconditioner, geos::SeparateComponentPreconditioner< LAI >, geos::PreconditionerBlockJacobi< LAI >, and geos::PreconditionerJacobi< LAI >.

Definition at line 52 of file PreconditionerBase.hpp.

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

coreComponents/linearAlgebra/common/PreconditionerBase.hpp

Public Types

Public Member Functions

Detailed Description

template<typename LAI> class geos::PreconditionerBase< LAI >

Member Function Documentation

◆ clear()

◆ comm()

◆ hasPreconditionerMatrix()

◆ matrix()

◆ numGlobalCols()

◆ numGlobalRows()

◆ numLocalCols()

◆ numLocalRows()

◆ preconditionerMatrix()

◆ ready()

◆ setup()

template<typename LAI>
class geos::PreconditionerBase< LAI >