Set of parameters for a linear solver or preconditioner. More...

Classes
struct	AMG
	Algebraic multigrid parameters. More...

struct	DD
	Domain decomposition parameters. More...

struct	Direct
	Direct solver parameters: used for SuperLU_Dist interface through hypre and PETSc. More...

struct	IFact
	Incomplete factorization parameters. More...

struct	Krylov
	Krylov-method parameters. More...

struct	MGR
	Multigrid reduction parameters. More...

struct	Scaling
	Matrix-scaling parameters. More...

Public Types
enum class	SolverType : integer { direct , cg , gmres , fgmres , bicgstab , preconditioner }
	Linear solver type. More...

enum class	PreconditionerType : integer { none , jacobi , l1jacobi , fgs , sgs , l1sgs , chebyshev , iluk , ilut , ic , ict , amg , mgr , block , direct , bgs }
	Preconditioner type. More...

Public Attributes
integer	logLevel = 0
	Output level [0=none, 1=basic, 2=everything].

integer	dofsPerNode = 1
	Dofs per node (or support location) for non-scalar problems.

bool	isSymmetric = false
	Whether input matrix is symmetric (may affect choice of scheme)

integer	stopIfError = 1
	Whether to stop the simulation if the linear solver reports an error.

SolverType	solverType = SolverType::direct
	Solver type.

PreconditionerType	preconditionerType = PreconditionerType::iluk
	Preconditioner type.

struct geos::LinearSolverParameters::Direct	direct
	direct solver parameter struct

struct geos::LinearSolverParameters::Krylov	krylov
	Krylov-method parameter struct.

struct geos::LinearSolverParameters::Scaling	scaling
	Matrix-scaling parameter struct.

struct geos::LinearSolverParameters::AMG	amg
	Algebraic Multigrid (AMG) parameters.

struct geos::LinearSolverParameters::MGR	mgr
	Multigrid reduction (MGR) parameters.

struct geos::LinearSolverParameters::IFact	ifact
	Incomplete factorization parameter struct.

struct geos::LinearSolverParameters::DD	dd
	Domain decomposition parameter struct.

Detailed Description

Set of parameters for a linear solver or preconditioner.

This class holds a simple tree of linear solver options. They are set to default values, but can be overwritten as needed.

Definition at line 34 of file LinearSolverParameters.hpp.

Member Enumeration Documentation

strong

Preconditioner type.

Enumerator
none	No preconditioner.
jacobi	Jacobi smoothing.
l1jacobi	l1-Jacobi smoothing
fgs	Gauss-Seidel smoothing (forward sweep)
sgs	Symmetric Gauss-Seidel smoothing.
l1sgs	l1-Symmetric Gauss-Seidel smoothing
chebyshev	Chebyshev polynomial smoothing.
iluk	Incomplete LU with k-level of fill.
ilut	Incomplete LU with thresholding.
ic	Incomplete Cholesky.
ict	Incomplete Cholesky with thresholding.
amg	Algebraic Multigrid.
mgr	Multigrid reduction (Hypre only)
block	Block preconditioner.
direct	Direct solver as preconditioner.
bgs	Gauss-Seidel smoothing (backward sweep)

Definition at line 52 of file LinearSolverParameters.hpp.

strong

Linear solver type.

Definition at line 39 of file LinearSolverParameters.hpp.

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