BlockPreconditioner< M, V, RowBasis, ColBasis > Class Template Reference

Preconditioner for block-preconditioners using row/column sub-ranges. More...

#include <BlockPreconditioner.hpp>

Inherits BlockPreconditionerImpl< RowBasis, ColBasis >, and PreconditionerInterface< M, V, V >.

Public Types
using	StridedVector = mtl::vec::strided_vector_ref< typename V::value_type >
	Return a view on a sub-vector block for indices given in a strided range.

Public Member Functions
	BlockPreconditioner (std::shared_ptr< RowBasis > rowBasis, std::shared_ptr< ColBasis > colBasis)
	Constructor, constructs a block mapping for row and column basis.
	BlockPreconditioner (std::shared_ptr< RowBasis > rowBasis)
	Constructor, constructs a block mapping for row and column basis.
void	init (M const &A) override
	Initialize the preconditioner by initializing all sub precons.
void	initBlocks (M const &A, bool diagonalsOnly=false)
	Fill block matrices from fullMatrix.
M const &	subMatrix (std::size_t i, std::size_t j) const
	Return the sub-matrix block (i,j)
M &	subMatrix (std::size_t i, std::size_t j)
	Return the sub-matrix block (i,j)
template<class Vector >
auto	subVector (Vector &&vec, mtl::irange const &ir) const
	Return a view on a sub-vector block for indices given in a range.
StridedVector	subVector (V &vec, mtl::srange const &sr) const
StridedVector const	subVector (V const &vec, mtl::srange const &sr) const
	Return a view on a sub-vector block for indices given in a strided range.
std::size_t	rows () const
	Return the number of row blocks.
std::size_t	cols () const
	Return the number of columns blocks.
Public Member Functions inherited from PreconditionerInterface< M, V, V >
virtual	~PreconditionerInterface ()=default
	Virtual destructor.
virtual void	finish ()=0
	Is called at the end of a solution procedure.
virtual void	solve (V const &x, V &y) const=0
	Apply the preconditioner to a vector x and store the result in y.
virtual void	adjoint_solve (V const &x, V &y) const
	Apply the transposed preconditioner to a vector x and store the result in y.

Protected Attributes
BlockedBasisMapping< RowBasis, ColBasis >	blockMapping_
BlockMatrix< M >	subMatrix_

Detailed Description

template<class M, class V, class RowBasis, class ColBasis = RowBasis>
class AMDiS::BlockPreconditioner< M, V, RowBasis, ColBasis >

Preconditioner for block-preconditioners using row/column sub-ranges.

Member Function Documentation

init()

template<class M , class V , class RowBasis , class ColBasis = RowBasis>

void init ( M const &  A )

inlineoverridevirtual

Initialize the preconditioner by initializing all sub precons.

Implements PreconditionerInterface< M, V, V >.

References BlockPreconditioner< M, V, RowBasis, ColBasis >::initBlocks().

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

• /home/docs/checkouts/readthedocs.org/user_builds/amdis/checkouts/latest/amdis/linearalgebra/mtl/BlockPreconditioner.hpp