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BiCGStabSmoother Class Reference

Implements BiCGStab as a bottom smoother for LevelOp-derived classes. More...

#include <BiCGStabSmoother.H>

Inheritance diagram for BiCGStabSmoother:

[legend]Collaboration diagram for BiCGStabSmoother:

[legend]List of all members.

Public Methods
	BiCGStabSmoother ()
	Null constructor.
virtual	~BiCGStabSmoother ()
	Destructor.
virtual BaseBottomSmoother *	new_bottomSmoother () const
	"Virtual constructor" workaround.
void	setMaxIter (int a_maxIter)
	Set maximum number of BiCGStab iterations.
void	setSolverTol (Real a_solverTol)
	Set solver tolerance.
void	setEnableRestart (bool a_enableRestart)
	Set whether to enable restart capabillity.
void	setVerbose (bool a_verbose)
	Set verbosity level.
virtual void	doBottomSmooth (LevelData< FArrayBox > &a_phi, const LevelData< FArrayBox > &a_rhs, LevelOp *a_levelopPtr)
	Do smoothing.
virtual void	setConvergenceMetric (Real a_metric, int a_comp)
	set metric for judging convergence (if not set, defaults to 1.0)
Protected Attributes
int	m_maxIter
Vector< Real >	m_convergenceMetrics
Real	m_solverTol
Real	m_small
Real	m_convergeSmall
bool	m_enableRestart
bool	m_verbose

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Detailed Description

Implements BiCGStab as a bottom smoother for LevelOp-derived classes.

The BiCGStabSmoother class implements the BiCGStab algorithm for LevelOp-derived classes

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Constructor & Destructor Documentation

BiCGStabSmoother::BiCGStabSmoother (    )

Null constructor.

virtual BiCGStabSmoother::~BiCGStabSmoother (    )  [virtual]

Destructor.

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Member Function Documentation

virtual void BiCGStabSmoother::doBottomSmooth (  LevelData< FArrayBox > &    a_phi, const LevelData< FArrayBox > &    a_rhs, LevelOp *    a_levelopPtr )  [virtual]

Do smoothing. Performs BiCGStab smoothing of L(a_phi) = a_rhs; L is the operator defined in a_levelopPtr, and the preconditioner is a_levelopPtr->smooth Implements BaseBottomSmoother.

virtual BaseBottomSmoother* BiCGStabSmoother::new_bottomSmoother (    )  const [virtual]

"Virtual constructor" workaround. This gets around the "no virtual constructor" rule Implements BaseBottomSmoother.

virtual void BiCGStabSmoother::setConvergenceMetric (  Real    a_metric, int    a_comp )  [virtual]

set metric for judging convergence (if not set, defaults to 1.0) Implements BaseBottomSmoother.

void BiCGStabSmoother::setEnableRestart (  bool    a_enableRestart )

Set whether to enable restart capabillity. If this is true, if BiCGStab reaches a hang point, the solver will recompute the residual and attempt to restart the computation

void BiCGStabSmoother::setMaxIter (  int    a_maxIter )

Set maximum number of BiCGStab iterations.

void BiCGStabSmoother::setSolverTol (  Real    a_solverTol )  [virtual]

Set solver tolerance. Set solver tolerance Implements BaseBottomSmoother.

void BiCGStabSmoother::setVerbose (  bool    a_verbose )

Set verbosity level. Set whether i/o is done when solving (default is false)

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Member Data Documentation

Vector<Real> BiCGStabSmoother::m_convergenceMetrics [protected]

Solver convergence metrics

Real BiCGStabSmoother::m_convergeSmall [protected]

Small parameter to check for size of correction (to prevent hanging)

bool BiCGStabSmoother::m_enableRestart [protected]

If true, enable restarting capability

int BiCGStabSmoother::m_maxIter [protected]

Maximum number of BiCGStab iterations

Real BiCGStabSmoother::m_small [protected]

Small parameter to check for division by zero

Real BiCGStabSmoother::m_solverTol [protected]

Solver tolerance (we declare the problem solved if the residual is smaller than solverTol*convergenceMetric

bool BiCGStabSmoother::m_verbose [protected]

Default is false

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

• BiCGStabSmoother.H

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