EllipticSolverChain::Settings Struct Reference

Outer-Krylov configuration. Defaults reproduce stand-alone multigrid (solvers == {GMG}). More...

#include <CD_EllipticSolverChain.H>

Public Member Functions
bool	usesKrylov () const
	Whether any solver in the chain is a Krylov method (and hence needs the preconditioner adapter).

Public Attributes
Vector< SolverType >	solvers = Vector<SolverType>(1, SolverType::GMG)
	Solvers attempted in order; the first that converges wins. E.g. {GMG, GMRES} means "try stand-alone multigrid, fall back to GMRES if it does not converge".
Real	eps = 1.E-10
	Relative residual tolerance.
int	maxIter = 50
	Maximum outer iterations.
int	restart = 30
	GMRES restart length (unused for BiCGStab).
int	numVCycles = 1
	Number of multigrid cycles applied per preconditioner invocation. The cycle type (V/W) is deferred to the multigrid configuration via gmg_cycle; it should normally be a V-cycle for efficiency.
int	verbosity = -1
	Outer Krylov verbosity.

Detailed Description

Outer-Krylov configuration. Defaults reproduce stand-alone multigrid (solvers == {GMG}).

Member Function Documentation

usesKrylov()

bool EllipticSolverChain::Settings::usesKrylov ( ) const

inline

Whether any solver in the chain is a Krylov method (and hence needs the preconditioner adapter).

Returns

True if the chain contains GMRES or BiCGStab.

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

• Source/Elliptic/CD_EllipticSolverChain.H