Block preconditioner parameters. More...

Public Types
enum class	Shape { Diagonal , UpperTriangular , LowerTriangular , LowerUpperTriangular }
	Shape of the block preconditioner. More...

enum class	SchurType { None , FirstBlockDiagonal , RowsumDiagonalProbing , FirstBlockUserDefined }
	Type of Schur complement approximation used. More...

enum class	Scaling { None , FrobeniusNorm , UserProvided }
	Type of block row scaling to apply. More...

Public Member Functions
void	resize (integer const numBlocks)
	Set the number of blocks and resize arrays accordingly. More...

Public Attributes
Shape	shape = Shape::UpperTriangular
	Block preconditioner shape.

SchurType	schurType = SchurType::RowsumDiagonalProbing
	Schur complement type.

Scaling	scaling = Scaling::FrobeniusNorm
	Type of system scaling to use.

array1d< LinearSolverParameters const * >	subParams
	Pointers to parameters for sub-problems.

array1d< integer >	order
	Order of application of sub-problem solvers.

Detailed Description

Block preconditioner parameters.

Member Enumeration Documentation

strong

Type of block row scaling to apply.

Enumerator
None	No scaling.
FrobeniusNorm	Equilibrate Frobenius norm of the diagonal blocks.
UserProvided	User-provided scaling.

strong

Type of Schur complement approximation used.

Enumerator
None	No Schur complement - just block-GS/block-Jacobi preconditioner.
FirstBlockDiagonal	Approximate first block with its diagonal.
RowsumDiagonalProbing	Rowsum-preserving diagonal approximation constructed with probing.
FirstBlockUserDefined	User defined preconditioner for the first block.

strong

Shape of the block preconditioner.

void geos::LinearSolverParameters::Block::resize ( integer const numBlocks )

inline

Set the number of blocks and resize arrays accordingly.

Parameters

numBlocks the number of sub-problem blocks in the system

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