Belos::DefaultSolverParameters Struct Reference

Default parameters common to most Belos solvers. More...

#include <BelosTypes.hpp>

Static Public Attributes
static const double	convTol = 1.0e-8
	Default convergence tolerance. More...
static const double	polyTol = 1.0e-12
	Relative residual tolerance for matrix polynomial construction. More...
static const double	orthoKappa = -1.0
	DGKS orthogonalization constant. More...
static const double	resScaleFactor = 1.0
	User-defined residual scaling factor. More...
static const double	impTolScale = 10.0
	"Implicit Tolerance Scale Factor" More...

Detailed Description

Default parameters common to most Belos solvers.

Both Belos solvers and users may override these defaults. Real floating-point values are deliberately double, in order to avoid issues with constexpr construction of certain MagnitudeTypes.

Definition at line 291 of file BelosTypes.hpp.

Member Data Documentation

const double Belos::DefaultSolverParameters::convTol = 1.0e-8

static

Default convergence tolerance.

This assumes that implicit conversion from double to Teuchos::ScalarTraits<Scalar>::magnitudeType always works, but Belos already assumed that. See discussion starting here:

https://github.com/trilinos/Trilinos/pull/2677#issuecomment-395453521

Initialization of values moved to BelosTypes.cpp to fix ODR-used issues

Definition at line 301 of file BelosTypes.hpp.

const double Belos::DefaultSolverParameters::polyTol = 1.0e-12

static

Relative residual tolerance for matrix polynomial construction.

Definition at line 304 of file BelosTypes.hpp.

const double Belos::DefaultSolverParameters::orthoKappa = -1.0

static

DGKS orthogonalization constant.

Definition at line 307 of file BelosTypes.hpp.

const double Belos::DefaultSolverParameters::resScaleFactor = 1.0

static

User-defined residual scaling factor.

Definition at line 310 of file BelosTypes.hpp.

const double Belos::DefaultSolverParameters::impTolScale = 10.0

static

"Implicit Tolerance Scale Factor"

Definition at line 313 of file BelosTypes.hpp.

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

• BelosTypes.hpp
• BelosTypes.cpp