TNL::Solvers::ODE::ExplicitSolver< Real, Index, SolverMonitor > Class Template Reference

Base class for ODE solvers and explicit solvers od PDEs. More...

#include <TNL/Solvers/ODE/ExplicitSolver.h>

Inheritance diagram for TNL::Solvers::ODE::ExplicitSolver< Real, Index, SolverMonitor >:

Collaboration diagram for TNL::Solvers::ODE::ExplicitSolver< Real, Index, SolverMonitor >:

Public Types
using	IndexType = Index
	Indexing type.
using	RealType = Real
	Type of the floating-point arithmetics.
using	SolverMonitorType = SolverMonitor
	Type of the monitor of the convergence of the solver.
Public Types inherited from TNL::Solvers::IterativeSolver< Real, Index, SolverMonitor >
using	SolverMonitorType = SolverMonitor
	Type of an object used for monitoring of the convergence.

Public Member Functions
	ExplicitSolver ()=default
	Default constructor.
bool	checkNextIteration ()
	Checks if the solver is allowed to do the next iteration.
const RealType &	getMaxTau () const
	Getter of maximal value of the time step.
const RealType &	getStopTime () const
	Getter of the time where the evolution computation shall by stopped.
const RealType &	getTau () const
	Getter of the time step used for the computation.
const RealType &	getTime () const
	Getter of the current time of the evolution computed by the solver.
void	refreshSolverMonitor (bool force=false)
	This method refreshes the solver monitor.
void	setMaxTau (const RealType &maxTau)
	Setter of maximal value of the time step.
void	setStopTime (const RealType &stopTime)
	Setter of the time where the evolution computation shall by stopped.
void	setTau (const RealType &tau)
	Setter of the time step used for the computation.
void	setTestingMode (bool testingMode)
void	setTime (const RealType &t)
	Settter of the current time of the evolution computed by the solver.
bool	setup (const Config::ParameterContainer &parameters, const std::string &prefix="")
	Method for setup of the iterative solver based on configuration parameters.
Public Member Functions inherited from TNL::Solvers::IterativeSolver< Real, Index, SolverMonitor >
	IterativeSolver ()=default
	Default constructor.
bool	checkConvergence ()
	Checks whether the convergence occurred already.
bool	checkNextIteration ()
	Checks if the solver is allowed to do the next iteration.
const Real &	getConvergenceResidue () const
	Gets the the convergence threshold.
const Real &	getDivergenceResidue () const
	Gets the limit for the divergence criterion.
const Index &	getIterations () const
	Gets the number of iterations performed by the solver so far.
const Index &	getMaxIterations () const
	Gets the maximal number of iterations the solver is allowed to perform.
const Index &	getMinIterations () const
	Gets the minimal number of iterations the solver is supposed to do.
const Real &	getResidue () const
	Gets the residue reached at the current iteration.
bool	nextIteration ()
	Proceeds to the next iteration.
void	resetIterations ()
	Sets the the number of the current iterations to zero.
void	setConvergenceResidue (const Real &convergenceResidue)
	Sets the threshold for the convergence.
void	setDivergenceResidue (const Real &divergenceResidue)
	Sets the residue limit for the divergence criterion.
void	setMaxIterations (const Index &maxIterations)
	Sets the maximal number of iterations the solver is allowed to perform.
void	setMinIterations (const Index &minIterations)
	Sets the minimal number of iterations the solver is supposed to do.
void	setRefreshRate (const Index &refreshRate)
	Sets the refresh rate (in milliseconds) for the solver monitor.
void	setResidue (const Real &residue)
	Sets the residue reached at the current iteration.
void	setSolverMonitor (SolverMonitorType &solverMonitor)
	Sets the solver monitor object.
bool	setup (const Config::ParameterContainer &parameters, const std::string &prefix="")
	Method for setup of the iterative solver based on configuration parameters.

Static Public Member Functions
static void	configSetup (Config::ConfigDescription &config, const std::string &prefix="")
	This method defines configuration entries for setup of the iterative solver.
Static Public Member Functions inherited from TNL::Solvers::IterativeSolver< Real, Index, SolverMonitor >
static void	configSetup (Config::ConfigDescription &config, const std::string &prefix="")
	This method defines configuration entries for setup of the iterative solver.

Protected Attributes
RealType	maxTau = std::numeric_limits< RealType >::max()
bool	stopOnSteadyState = false
RealType	stopTime
RealType	tau = 0.0
bool	testingMode = false
RealType	time = 0.0
Protected Attributes inherited from TNL::Solvers::IterativeSolver< Real, Index, SolverMonitor >
Real	convergenceResidue = 1e-6
Index	currentIteration = 0
Real	currentResidue = 0
Real	divergenceResidue = std::numeric_limits< Real >::max()
Index	maxIterations = 1000000000
Index	minIterations = 0
Index	refreshRate = 1
std::ofstream	residualHistoryFile
std::string	residualHistoryFileName = ""
SolverMonitor *	solverMonitor = nullptr

Detailed Description

template<typename Real = double, typename Index = int, typename SolverMonitor = IterativeSolverMonitor< Real, Index >>
class TNL::Solvers::ODE::ExplicitSolver< Real, Index, SolverMonitor >

Base class for ODE solvers and explicit solvers od PDEs.

See also: TNL::Solvers::ODE::Euler, TNL::Solvers::ODE::Merson.

Template Parameters

Real	is type of the floating-point arithmetics.
Index	is type for indexing.
IterativeSolverMonitor<	Real, Index > is

Member Function Documentation

checkNextIteration()

template<typename Real , typename Index , typename SolverMonitor >

bool TNL::Solvers::ODE::ExplicitSolver< Real, Index, SolverMonitor >::checkNextIteration

(

)

Checks if the solver is allowed to do the next iteration.

Returns

true true if the solver is allowed to do the next iteration.

false if the solver is not allowed to do the next iteration. This may happen because the divergence occurred.

configSetup()

template<typename Real , typename Index , typename SolverMonitor >

void TNL::Solvers::ODE::ExplicitSolver< Real, Index, SolverMonitor >::configSetup ( Config::ConfigDescription &  config, const std::string &  prefix = ""  )

static

This method defines configuration entries for setup of the iterative solver.

Parameters

config	is the config description.
prefix	is the prefix of the configuration parameters for this solver.

refreshSolverMonitor()

template<typename Real , typename Index , typename SolverMonitor >

void TNL::Solvers::ODE::ExplicitSolver< Real, Index, SolverMonitor >::refreshSolverMonitor

(

bool

force = false

)

This method refreshes the solver monitor.

The method propagates values of time, time step and others to the solver monitor.

setMaxTau()

template<typename Real , typename Index , typename SolverMonitor >

void TNL::Solvers::ODE::ExplicitSolver< Real, Index, SolverMonitor >::setMaxTau

(

const RealType &

maxTau

)

Setter of maximal value of the time step.

If methods uses adaptive choice of the time step, this sets the upper limit.

setTau()

template<typename Real , typename Index , typename SolverMonitor >

void TNL::Solvers::ODE::ExplicitSolver< Real, Index, SolverMonitor >::setTau

(

const RealType &

tau

)

Setter of the time step used for the computation.

The time step can be changed by methods using adaptive choice of the time step.

setup()

template<typename Real , typename Index , typename SolverMonitor >

bool TNL::Solvers::ODE::ExplicitSolver< Real, Index, SolverMonitor >::setup	(	const Config::ParameterContainer &	parameters,
		const std::string &	prefix = ""
	)

Method for setup of the iterative solver based on configuration parameters.

Parameters

parameters	is the container for configuration parameters.
prefix	is the prefix of the configuration parameters for this solver.

Returns

true if the parameters where parsed sucessfuly.

false if the method did not succeed to read the configuration parameters.

---

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

• src/TNL/Solvers/ODE/ExplicitSolver.h
• src/TNL/Solvers/ODE/ExplicitSolver.hpp