Abstract base class for standard coupling schemes. More...

#include <BaseCouplingScheme.hpp>

Inheritance diagram for precice::cplscheme::BaseCouplingScheme:

Collaboration diagram for precice::cplscheme::BaseCouplingScheme:

Classes
struct	ConvergenceMeasureContext
	Holds meta information to perform a convergence measurement. More...

Public Types
enum	CouplingMode { Explicit , Implicit , Undefined }
Public Types inherited from precice::cplscheme::CouplingScheme
enum struct	Action { InitializeData , ReadCheckpoint , WriteCheckpoint }
	Actions that are required by CouplingSchemes. More...
using	ChangedMeshes = std::vector<MeshID>

Public Member Functions
	BaseCouplingScheme (double maxTime, int maxTimeWindows, double timeWindowSize, std::string localParticipant, int minIterations, int maxIterations, CouplingMode cplMode, constants::TimesteppingMethod dtMethod)
bool	sendsInitializedData () const final override
	Getter for _sendsInitializedData.
bool	isInitialized () const final override
	getter for _isInitialized
bool	addComputedTime (double timeToAdd) final override
	Adds newly computed time. Has to be called before every advance.
bool	willDataBeExchanged (double lastSolverTimeStepSize) const final override
	Returns true, if data will be exchanged when calling advance().
bool	hasDataBeenReceived () const final override
	getter for _hasDataBeenReceived
double	getTime () const final override
	getter for _time
double	getTimeWindowStart () const final override
double	getTimeWindowProgress () const
int	getTimeWindows () const final override
	getter for _timeWindows
bool	hasTimeWindowSize () const final override
	Function to check whether time window size is defined by coupling scheme.
double	getTimeWindowSize () const final override
	Returns the time window size, if one is given by the coupling scheme.
double	getNextTimeStepMaxSize () const final override
	Returns the maximal size of the next time step to be computed.
bool	isCouplingOngoing () const final override
	Returns true, when the coupled simulation is still ongoing.
bool	isTimeWindowComplete () const final override
	Returns true, when the accessor can advance to the next time window.
bool	isActionRequired (Action action) const final override
	Returns true, if the given action has to be performed by the accessor.
bool	isActionFulfilled (Action action) const final override
	Returns true, if the given action has to be performed by the accessor.
void	markActionFulfilled (Action action) final override
	Tells the coupling scheme that the accessor has performed the given action.
void	requireAction (Action action) final override
	Sets an action required to be performed by the accessor.
std::string	printCouplingState () const override
	Returns coupling state information.
void	finalize () final override
	Finalizes the coupling scheme.
void	initialize () final override
	Initializes the coupling scheme and establishes a communication connection to the coupling partner. Initializes coupling data.
void	reinitialize () final override
	Reinitializes the coupling scheme, coupling data, and acceleration schemes.
ChangedMeshes	firstSynchronization (const ChangedMeshes &changes) final override
void	firstExchange () final override
ChangedMeshes	secondSynchronization () final override
void	secondExchange () final override
void	addConvergenceMeasure (int dataID, bool suffices, bool strict, impl::PtrConvergenceMeasure measure)
	Adds a measure to determine the convergence of coupling iterations.
void	setAcceleration (const acceleration::PtrAcceleration &acceleration)
	Set an acceleration technique.
bool	doesFirstStep () const
	Getter for _doesFirstStep.
virtual bool	hasAnySendData ()=0
virtual void	determineInitialDataExchange ()=0
	Determines which data is initialized and therefore has to be exchanged during initialize.
bool	isImplicitCouplingScheme () const override
	Function to determine whether coupling scheme is an implicit coupling scheme.
bool	hasConverged () const override
	Checks if the implicit cplscheme has converged.
Public Member Functions inherited from precice::cplscheme::CouplingScheme
CouplingScheme &	operator= (CouplingScheme &&)=delete
virtual	~CouplingScheme ()=default
virtual std::vector< std::string >	getCouplingPartners () const =0
	Returns list of all coupling partners.

Protected Member Functions
void	sendTimes (const m2n::PtrM2N &m2n, precice::span< double const > times)
void	sendData (const m2n::PtrM2N &m2n, const DataMap &sendData)
	Sends data sendDataIDs given in mapCouplingData with communication.
std::vector< double >	receiveTimes (const m2n::PtrM2N &m2n)
void	receiveData (const m2n::PtrM2N &m2n, const DataMap &receiveData)
	Receives data receiveDataIDs given in mapCouplingData with communication.
void	receiveDataForWindowEnd (const m2n::PtrM2N &m2n, const DataMap &receiveData)
	Like receiveData, but temporarily sets window time to end of window.
void	initializeWithZeroInitialData (const DataMap &receiveData)
	Initializes storage in receiveData as zero.
PtrCouplingData	addCouplingData (const mesh::PtrData &data, mesh::PtrMesh mesh, bool requiresInitialization, bool exchangeSubsteps, CouplingData::Direction direction)
	Adds CouplingData with given properties to this BaseCouplingScheme and returns a pointer to the CouplingData.
bool	isExplicitCouplingScheme () const
	Function to determine whether coupling scheme is an explicit coupling scheme.
void	setTimeWindowSize (double timeWindowSize)
	Setter for _timeWindowSize.
double	getNextTimeWindowSize () const
	Getter for _nextTimeWindowSize.
void	setNextTimeWindowSize (double timeWindowSize)
	Setter for _nextTimeWindowSize.
void	setDoesFirstStep (bool doesFirstStep)
	Setter for _doesFirstStep.
void	notifyDataHasBeenReceived ()
	Used to set flag after data has been received using receiveData().
bool	receivesInitializedData () const
	Getter for _receivesInitializedData.
void	setTimeWindows (int timeWindows)
	Setter for _timeWindows.
void	sendConvergence (const m2n::PtrM2N &m2n)
	sends convergence to other participant via m2n
void	receiveConvergence (const m2n::PtrM2N &m2n)
	receives convergence from other participant via m2n
void	doImplicitStep ()
	perform a coupling iteration
void	moveToNextWindow ()
	finalizes this window's data and initializes data for next window.
void	storeIteration ()
	used for storing all Data at end of doImplicitStep for later reference.
void	determineInitialSend (DataMap &sendData)
	Sets _sendsInitializedData, if sendData requires initialization.
void	determineInitialReceive (DataMap &receiveData)
	Sets _receivesInitializedData, if receiveData requires initialization.
bool	reachedEndOfTimeWindow () const
	Function to check whether end of time window is reached. Does not check for convergence.
bool	requiresSubsteps () const final override
	Returns true if any send data of the scheme requires substeps.
ImplicitData	implicitDataToReceive () const override
	Returns a vector of implicit data to receive in the next advance.
std::string	localParticipant () const final override
	Returns the name of the local participant.
double	getWindowEndTime () const
double	getWindowStartTime () const

Protected Attributes
DataMap	_allData
	All send and receive data as a map "data ID -> data".
acceleration::PtrAcceleration	_acceleration
	Acceleration method to speedup iteration convergence.

Private Member Functions
virtual void	initializeReceiveDataStorage ()=0
	Functions needed for initialize()
virtual void	exchangeInitialData ()=0
	implements functionality for initialize in base class.
virtual void	exchangeFirstData ()=0
	Functions needed for advance()
virtual void	exchangeSecondData ()=0
	Exchanges the second set of data.
virtual DataMap &	getAccelerationData ()=0
	interface to provide accelerated data, depending on coupling scheme being used
void	checkCompletenessRequiredActions ()
	If any required actions are open, an error message is issued.
void	checkCouplingDataAvailable ()
	Issues an error if coupling data does not contain stamples.
void	initializeTXTWriters ()
	Initialize txt writers for iterations and convergence tracking.
void	advanceTXTWriters ()
	Advance txt writers for iterations and convergence tracking.
bool	measureConvergence ()
	Measure whether coupling scheme has converged or not.
void	newConvergenceMeasurements ()
	Reset all convergence measurements after convergence.
bool	anyDataRequiresInitialization (DataMap &dataMap) const
	Checks whether any CouplingData in dataMap requires initialization.

Private Attributes
CouplingMode	_couplingMode = Undefined
	Coupling mode used by coupling scheme.
logging::Logger	_log {"cplscheme::BaseCouplingScheme"}
double	_maxTime
	Maximum time being computed. End of simulation is reached, if getTime() == _maxTime.
int	_maxTimeWindows
	Number of time windows that have to be computed. End of simulation is reached, if _timeWindows == _maxTimeWindows.
int	_timeWindows = 0
	number of completed time windows; _timeWindows <= _maxTimeWindows
double	_timeWindowSize = UNDEFINED_TIME_WINDOW_SIZE
	size of time window; _timeWindowSize <= _maxTime
double	_nextTimeWindowSize = UNDEFINED_TIME_WINDOW_SIZE
	time window size of next window (acts as buffer for time windows size provided by first participant, if using first participant method)
impl::TimeHandler	_time
	Time handler.
int	_minIterations = -1
	Lower limit of iterations during one time window. Prevents convergence if _iterations < _minIterations.
int	_maxIterations = -1
	Limit of iterations during one time window. Continue to next time window, if _iterations == _maxIterations.
int	_iterations = -1
	Number of iterations in current time window. _iterations <= _maxIterations.
int	_totalIterations = -1
	Number of total iterations performed.
bool	_doesFirstStep = false
	True, if local participant is the one starting the explicit scheme.
bool	_isTimeWindowComplete = false
	True, if _time == _timeWindowStartTime + _timeWindowSize and (coupling has converged or _iterations == _maxIterations)
bool	_sendsInitializedData = false
	True, if this participant has to send initialized data.
bool	_receivesInitializedData = false
	True, if this participant has to receive initialized data.
bool	_hasDataBeenReceived = false
	True, if data has been received from other participant. Flag is used to make sure that coupling scheme is implemented and used correctly.
bool	_isInitialized = false
	True, if coupling has been initialized.
std::set< Action >	_requiredActions
std::set< Action >	_fulfilledActions
bool	_hasConverged = false
	True if implicit scheme converged.
std::shared_ptr< io::TXTTableWriter >	_iterationsWriter
	Responsible for monitoring iteration count over time window.
std::shared_ptr< io::TXTTableWriter >	_convergenceWriter
	Writes out coupling convergence within all time windows.
std::string	_localParticipant = "unknown"
	Local participant name.
std::vector< ConvergenceMeasureContext >	_convergenceMeasures
	All convergence measures of coupling iterations.

Additional Inherited Members
Static Public Member Functions inherited from precice::cplscheme::CouplingScheme
static std::string	toString (Action action)
Static Public Attributes inherited from precice::cplscheme::CouplingScheme
static const double	UNDEFINED_MAX_TIME = -1.0
	Does not define a time limit for the coupled simulation.
static const int	UNDEFINED_TIME_WINDOWS = -1
	Does not define limit on time windows for the coupled simulation.
static const double	UNDEFINED_TIME_WINDOW_SIZE = -1.0
	To be used, when the time window size is determined dynamically during the coupling.
static const int	UNDEFINED_MAX_ITERATIONS = -1
	To be used, when the number of max iterations is not defined (for explicit coupling).
static const int	UNDEFINED_MIN_ITERATIONS = -1
	To be used, when the number of min iterations is not defined (for explicit coupling).
static const int	INFINITE_MAX_ITERATIONS = -2
	To be used, when the number of max iterations is infinite (for implicit coupling).

Detailed Description

Abstract base class for standard coupling schemes.

! General description A coupling scheme computes the actions to be done by the coupled participants (solvers) in time. It provides interface functions to setup, advance and shutdown the coupling scheme and interface functions to query the state of the coupling scheme and required actions of the participants.

! Usage

create an object of a concrete coupling scheme class (ExplicitCouplingScheme, e.g.)
add all meshes holding data to the coupling scheme by addMesh()
configure the object by adding subclass specific information
start the coupling scheme with initialize(), where the name of the local participant, i.e. the participant using the coupling scheme object, is needed
retrieve necessary information about sent/received data and the state of the coupled simulation
query actions and mark them as fulfilled
compute data to be sent (possibly taking into account received data from initialize())
advance the coupling scheme with advance(); where the maximum time step size (= time window size) needs to be obeyed
....
when the method isCouplingOngoing() returns false, call finalize() to stop the coupling scheme

Definition at line 61 of file BaseCouplingScheme.hpp.

Member Enumeration Documentation

◆ CouplingMode

enum precice::cplscheme::BaseCouplingScheme::CouplingMode

Enumerator
Explicit
Implicit
Undefined

Definition at line 63 of file BaseCouplingScheme.hpp.

Constructor & Destructor Documentation

◆ BaseCouplingScheme()

precice::cplscheme::BaseCouplingScheme::BaseCouplingScheme	(	double	maxTime,
		int	maxTimeWindows,
		double	timeWindowSize,
		std::string	localParticipant,
		int	minIterations,
		int	maxIterations,
		CouplingMode	cplMode,
		constants::TimesteppingMethod	dtMethod )

Definition at line 35 of file BaseCouplingScheme.cpp.

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Member Function Documentation

◆ addComputedTime()

bool precice::cplscheme::BaseCouplingScheme::addComputedTime ( double timeToAdd )

finaloverridevirtual

Adds newly computed time. Has to be called before every advance.

Parameters

timeToAdd time to be added

Returns: true, if reaches end of the window by adding timeToAdd to time in this time step.

Implements precice::cplscheme::CouplingScheme.

Definition at line 453 of file BaseCouplingScheme.cpp.

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◆ addConvergenceMeasure()

void precice::cplscheme::BaseCouplingScheme::addConvergenceMeasure	(	int	dataID,
		bool	suffices,
		bool	strict,
		impl::PtrConvergenceMeasure	measure )

Adds a measure to determine the convergence of coupling iterations.

Definition at line 675 of file BaseCouplingScheme.cpp.

◆ addCouplingData()

PtrCouplingData precice::cplscheme::BaseCouplingScheme::addCouplingData	(	const mesh::PtrData &	data,
		mesh::PtrMesh	mesh,
		bool	requiresInitialization,
		bool	exchangeSubsteps,
		CouplingData::Direction	direction )

protected

Adds CouplingData with given properties to this BaseCouplingScheme and returns a pointer to the CouplingData.

If CouplingData with ID of provided data already exists in coupling scheme, no duplicate is created but a pointer to the already existing CouplingData is returned.

Parameters

data	data the CouplingData is associated with
mesh	mesh the CouplingData is associated with
requiresInitialization	true, if CouplingData requires initialization
exchangeSubsteps	true, if CouplingData exchanges all substeps in send/recv
direction	is the coupling data send or received?

Returns: PtrCouplingData pointer to CouplingData owned by the CouplingScheme

Definition at line 228 of file BaseCouplingScheme.cpp.

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◆ advanceTXTWriters()

void precice::cplscheme::BaseCouplingScheme::advanceTXTWriters ( )

private

Advance txt writers for iterations and convergence tracking.

Definition at line 783 of file BaseCouplingScheme.cpp.

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◆ anyDataRequiresInitialization()

bool precice::cplscheme::BaseCouplingScheme::anyDataRequiresInitialization ( DataMap & dataMap ) const

private

Checks whether any CouplingData in dataMap requires initialization.

Parameters

dataMap map containing CouplingData

Returns: true, if any CouplingData in dataMap requires initialization

Definition at line 848 of file BaseCouplingScheme.cpp.

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◆ checkCompletenessRequiredActions()

void precice::cplscheme::BaseCouplingScheme::checkCompletenessRequiredActions ( )

private

If any required actions are open, an error message is issued.

Definition at line 621 of file BaseCouplingScheme.cpp.

◆ checkCouplingDataAvailable()

void precice::cplscheme::BaseCouplingScheme::checkCouplingDataAvailable ( )

private

Issues an error if coupling data does not contain stamples.

Definition at line 637 of file BaseCouplingScheme.cpp.

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◆ determineInitialDataExchange()

virtual void precice::cplscheme::BaseCouplingScheme::determineInitialDataExchange ( )

pure virtual

Determines which data is initialized and therefore has to be exchanged during initialize.

Calls determineInitialSend and determineInitialReceive for all send and receive data of this coupling scheme.

Implemented in precice::cplscheme::BiCouplingScheme, and precice::cplscheme::MultiCouplingScheme.

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◆ determineInitialReceive()

void precice::cplscheme::BaseCouplingScheme::determineInitialReceive ( DataMap & receiveData )

protected

Sets _receivesInitializedData, if receiveData requires initialization.

Parameters

receiveData CouplingData being checked

Definition at line 841 of file BaseCouplingScheme.cpp.

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◆ determineInitialSend()

void precice::cplscheme::BaseCouplingScheme::determineInitialSend ( DataMap & sendData )

protected

Sets _sendsInitializedData, if sendData requires initialization.

Parameters

sendData CouplingData being checked

Definition at line 833 of file BaseCouplingScheme.cpp.

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◆ doesFirstStep()

bool precice::cplscheme::BaseCouplingScheme::doesFirstStep ( ) const

Getter for _doesFirstStep.

Returns: _doesFirstStep

Definition at line 661 of file BaseCouplingScheme.cpp.

◆ doImplicitStep()

void precice::cplscheme::BaseCouplingScheme::doImplicitStep ( )

protected

perform a coupling iteration

See also: hasConverged

This function is called from the child classes

Definition at line 854 of file BaseCouplingScheme.cpp.

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◆ exchangeFirstData()

virtual void precice::cplscheme::BaseCouplingScheme::exchangeFirstData ( )

privatepure virtual

Functions needed for advance()

Exchanges the first set of data

Implemented in precice::cplscheme::MultiCouplingScheme, precice::cplscheme::ParallelCouplingScheme, and precice::cplscheme::SerialCouplingScheme.

◆ exchangeInitialData()

virtual void precice::cplscheme::BaseCouplingScheme::exchangeInitialData ( )

privatepure virtual

implements functionality for initialize in base class.

Implemented in precice::cplscheme::MultiCouplingScheme, precice::cplscheme::ParallelCouplingScheme, and precice::cplscheme::SerialCouplingScheme.

◆ exchangeSecondData()

virtual void precice::cplscheme::BaseCouplingScheme::exchangeSecondData ( )

privatepure virtual

Exchanges the second set of data.

Implemented in precice::cplscheme::MultiCouplingScheme, precice::cplscheme::ParallelCouplingScheme, and precice::cplscheme::SerialCouplingScheme.

◆ finalize()

void precice::cplscheme::BaseCouplingScheme::finalize ( )

finaloverridevirtual

Finalizes the coupling scheme.

Implements precice::cplscheme::CouplingScheme.

Definition at line 269 of file BaseCouplingScheme.cpp.

◆ firstExchange()

void precice::cplscheme::BaseCouplingScheme::firstExchange ( )

finaloverridevirtual

Exchanges the first set of data.

Precondition: firstSynchronization() was called

Implements precice::cplscheme::CouplingScheme.

Definition at line 341 of file BaseCouplingScheme.cpp.

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◆ firstSynchronization()

CouplingScheme::ChangedMeshes precice::cplscheme::BaseCouplingScheme::firstSynchronization ( const ChangedMeshes & changes )

finaloverridevirtual

Synchronizes mesh changes with remote participants.

At this point, both participants may have changed the meshes. Thus, we need to send local changes and receive remote changes.

Parameters

[in] changes MeshIDs of locally changed meshes

Returns: MeshIDs of remotely changed meshes.

Implements precice::cplscheme::CouplingScheme.

Definition at line 335 of file BaseCouplingScheme.cpp.

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◆ getAccelerationData()

virtual DataMap & precice::cplscheme::BaseCouplingScheme::getAccelerationData ( )

privatepure virtual

interface to provide accelerated data, depending on coupling scheme being used

Returns: data being accelerated

Implemented in precice::cplscheme::MultiCouplingScheme, precice::cplscheme::ParallelCouplingScheme, and precice::cplscheme::SerialCouplingScheme.

◆ getNextTimeStepMaxSize()

double precice::cplscheme::BaseCouplingScheme::getNextTimeStepMaxSize ( ) const

finaloverridevirtual

Returns the maximal size of the next time step to be computed.

If no time window size is prescribed by the coupling scheme, always the maximal double accuracy floating point number value is returned.

Implements precice::cplscheme::CouplingScheme.

Definition at line 535 of file BaseCouplingScheme.cpp.

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◆ getNextTimeWindowSize()

double precice::cplscheme::BaseCouplingScheme::getNextTimeWindowSize ( ) const

protected

Getter for _nextTimeWindowSize.

Parameters

timeWindowSize

Definition at line 443 of file BaseCouplingScheme.cpp.

◆ getTime()

double precice::cplscheme::BaseCouplingScheme::getTime ( ) const

finaloverridevirtual

getter for _time

Returns: the currently computed time of the coupling scheme.

Implements precice::cplscheme::CouplingScheme.

Definition at line 515 of file BaseCouplingScheme.cpp.

◆ getTimeWindowProgress()

double precice::cplscheme::BaseCouplingScheme::getTimeWindowProgress ( ) const

Definition at line 525 of file BaseCouplingScheme.cpp.

◆ getTimeWindows()

int precice::cplscheme::BaseCouplingScheme::getTimeWindows ( ) const

finaloverridevirtual

getter for _timeWindows

Returns: the number of currently computed time windows of the coupling scheme.

Implements precice::cplscheme::CouplingScheme.

Definition at line 530 of file BaseCouplingScheme.cpp.

◆ getTimeWindowSize()

double precice::cplscheme::BaseCouplingScheme::getTimeWindowSize ( ) const

finaloverridevirtual

Returns the time window size, if one is given by the coupling scheme.

An assertion is thrown, if no valid time window size is given. Check with hasTimeWindowSize().

Implements precice::cplscheme::CouplingScheme.

Definition at line 437 of file BaseCouplingScheme.cpp.

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◆ getTimeWindowStart()

double precice::cplscheme::BaseCouplingScheme::getTimeWindowStart ( ) const

finaloverridevirtual

Returns the time window start time of the current time window For compositional schemes, this returns the earliest start of an active time window

Implements precice::cplscheme::CouplingScheme.

Definition at line 520 of file BaseCouplingScheme.cpp.

◆ getWindowEndTime()

double precice::cplscheme::BaseCouplingScheme::getWindowEndTime ( ) const

protected

Returns: the end of the time window, defined as timeWindowStart + timeWindowSize

Definition at line 899 of file BaseCouplingScheme.cpp.

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◆ getWindowStartTime()

double precice::cplscheme::BaseCouplingScheme::getWindowStartTime ( ) const

protected

Returns: the start of the time window

Definition at line 894 of file BaseCouplingScheme.cpp.

◆ hasAnySendData()

virtual bool precice::cplscheme::BaseCouplingScheme::hasAnySendData ( )

pure virtual

Returns: true, if coupling scheme has any sendData

Implemented in precice::cplscheme::BiCouplingScheme, and precice::cplscheme::MultiCouplingScheme.

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◆ hasConverged()

bool precice::cplscheme::BaseCouplingScheme::hasConverged ( ) const

overridevirtual

Checks if the implicit cplscheme has converged.

Precondition: doImplicitStep() or receiveConvergence() has been called

Implements precice::cplscheme::CouplingScheme.

Definition at line 98 of file BaseCouplingScheme.cpp.

◆ hasDataBeenReceived()

bool precice::cplscheme::BaseCouplingScheme::hasDataBeenReceived ( ) const

finaloverridevirtual

getter for _hasDataBeenReceived

Returns: true, if data has been received in last call of advance().

Implements precice::cplscheme::CouplingScheme.

Definition at line 489 of file BaseCouplingScheme.cpp.

◆ hasTimeWindowSize()

bool precice::cplscheme::BaseCouplingScheme::hasTimeWindowSize ( ) const

finaloverridevirtual

Function to check whether time window size is defined by coupling scheme.

There are two reasons why a scheme might have a time window size: 1) a fixed time window size is given in the scheme 2) the participant received the time window size from another participant in the scheme

Returns: true, if time window size is available.

Implements precice::cplscheme::CouplingScheme.

Definition at line 432 of file BaseCouplingScheme.cpp.

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◆ implicitDataToReceive()

ImplicitData precice::cplscheme::BaseCouplingScheme::implicitDataToReceive ( ) const

overrideprotectedvirtual

Returns a vector of implicit data to receive in the next advance.

Implements precice::cplscheme::CouplingScheme.

Reimplemented in precice::cplscheme::SerialCouplingScheme.

Definition at line 919 of file BaseCouplingScheme.cpp.

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◆ initialize()

void precice::cplscheme::BaseCouplingScheme::initialize ( )

finaloverridevirtual

Initializes the coupling scheme and establishes a communication connection to the coupling partner. Initializes coupling data.

Implements precice::cplscheme::CouplingScheme.

Definition at line 275 of file BaseCouplingScheme.cpp.

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◆ initializeReceiveDataStorage()

virtual void precice::cplscheme::BaseCouplingScheme::initializeReceiveDataStorage ( )

privatepure virtual

Functions needed for initialize()

Need to initialize receive data

Implemented in precice::cplscheme::BiCouplingScheme, and precice::cplscheme::MultiCouplingScheme.

◆ initializeTXTWriters()

void precice::cplscheme::BaseCouplingScheme::initializeTXTWriters ( )

private

Initialize txt writers for iterations and convergence tracking.

Definition at line 751 of file BaseCouplingScheme.cpp.

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◆ initializeWithZeroInitialData()

void precice::cplscheme::BaseCouplingScheme::initializeWithZeroInitialData ( const DataMap & receiveData )

protected

Initializes storage in receiveData as zero.

Parameters

receiveData DataMap associated with received data

Definition at line 219 of file BaseCouplingScheme.cpp.

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◆ isActionFulfilled()

bool precice::cplscheme::BaseCouplingScheme::isActionFulfilled ( Action action ) const

finaloverridevirtual

Returns true, if the given action has to be performed by the accessor.

Implements precice::cplscheme::CouplingScheme.

Definition at line 565 of file BaseCouplingScheme.cpp.

◆ isActionRequired()

bool precice::cplscheme::BaseCouplingScheme::isActionRequired ( Action action ) const

finaloverridevirtual

Returns true, if the given action has to be performed by the accessor.

Implements precice::cplscheme::CouplingScheme.

Definition at line 559 of file BaseCouplingScheme.cpp.

◆ isCouplingOngoing()

bool precice::cplscheme::BaseCouplingScheme::isCouplingOngoing ( ) const

finaloverridevirtual

Returns true, when the coupled simulation is still ongoing.

Implements precice::cplscheme::CouplingScheme.

Definition at line 548 of file BaseCouplingScheme.cpp.

◆ isExplicitCouplingScheme()

bool precice::cplscheme::BaseCouplingScheme::isExplicitCouplingScheme ( ) const

protected

Function to determine whether coupling scheme is an explicit coupling scheme.

Returns: true, if coupling scheme is explicit

Definition at line 253 of file BaseCouplingScheme.cpp.

◆ isImplicitCouplingScheme()

bool precice::cplscheme::BaseCouplingScheme::isImplicitCouplingScheme ( ) const

overridevirtual

Function to determine whether coupling scheme is an implicit coupling scheme.

Returns: true, if coupling scheme is implicit

Implements precice::cplscheme::CouplingScheme.

Definition at line 92 of file BaseCouplingScheme.cpp.

◆ isInitialized()

bool precice::cplscheme::BaseCouplingScheme::isInitialized ( ) const

finaloverridevirtual

getter for _isInitialized

Returns: true, if initialize has been called.

Implements precice::cplscheme::CouplingScheme.

Definition at line 448 of file BaseCouplingScheme.cpp.

◆ isTimeWindowComplete()

bool precice::cplscheme::BaseCouplingScheme::isTimeWindowComplete ( ) const

finaloverridevirtual

Returns true, when the accessor can advance to the next time window.

Implements precice::cplscheme::CouplingScheme.

Definition at line 554 of file BaseCouplingScheme.cpp.

◆ localParticipant()

std::string precice::cplscheme::BaseCouplingScheme::localParticipant ( ) const

finaloverrideprotectedvirtual

Returns the name of the local participant.

Implements precice::cplscheme::CouplingScheme.

Definition at line 935 of file BaseCouplingScheme.cpp.

◆ markActionFulfilled()

void precice::cplscheme::BaseCouplingScheme::markActionFulfilled ( Action action )

finaloverridevirtual

Tells the coupling scheme that the accessor has performed the given action.

Implements precice::cplscheme::CouplingScheme.

Definition at line 571 of file BaseCouplingScheme.cpp.

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◆ measureConvergence()

bool precice::cplscheme::BaseCouplingScheme::measureConvergence ( )

private

Measure whether coupling scheme has converged or not.

Returns: Whether coupling scheme has converged

Definition at line 690 of file BaseCouplingScheme.cpp.

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◆ moveToNextWindow()

void precice::cplscheme::BaseCouplingScheme::moveToNextWindow ( )

protected

finalizes this window's data and initializes data for next window.

Definition at line 424 of file BaseCouplingScheme.cpp.

◆ newConvergenceMeasurements()

void precice::cplscheme::BaseCouplingScheme::newConvergenceMeasurements ( )

private

Reset all convergence measurements after convergence.

Definition at line 666 of file BaseCouplingScheme.cpp.

◆ notifyDataHasBeenReceived()

void precice::cplscheme::BaseCouplingScheme::notifyDataHasBeenReceived ( )

protected

Used to set flag after data has been received using receiveData().

Definition at line 499 of file BaseCouplingScheme.cpp.

◆ printCouplingState()

std::string precice::cplscheme::BaseCouplingScheme::printCouplingState ( ) const

overridevirtual

Returns coupling state information.

Includes current iteration, max iterations, time, time window and action.

Implements precice::cplscheme::CouplingScheme.

Definition at line 584 of file BaseCouplingScheme.cpp.

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◆ reachedEndOfTimeWindow()

bool precice::cplscheme::BaseCouplingScheme::reachedEndOfTimeWindow ( ) const

protected

Function to check whether end of time window is reached. Does not check for convergence.

Returns: true if end time of time window is reached or if this participant defines time window size (participant first method)

Definition at line 810 of file BaseCouplingScheme.cpp.

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◆ receiveConvergence()

void precice::cplscheme::BaseCouplingScheme::receiveConvergence ( const m2n::PtrM2N & m2n )

protected

receives convergence from other participant via m2n

Parameters

m2n	used for receiving

Returns: convergence bool

Definition at line 886 of file BaseCouplingScheme.cpp.

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◆ receiveData()

void precice::cplscheme::BaseCouplingScheme::receiveData	(	const m2n::PtrM2N &	m2n,
		const DataMap &	receiveData )

protected

Receives data receiveDataIDs given in mapCouplingData with communication.

Parameters

m2n	M2N used for communication
receiveData	DataMap associated with received data

Definition at line 167 of file BaseCouplingScheme.cpp.

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◆ receiveDataForWindowEnd()

void precice::cplscheme::BaseCouplingScheme::receiveDataForWindowEnd	(	const m2n::PtrM2N &	m2n,
		const DataMap &	receiveData )

protected

Like receiveData, but temporarily sets window time to end of window.

This function is only needed for SerialCouplingScheme, if substeps="false". Here, a special situation arises for the second participant, because it receives data for the end of the window from the first participant: If substeps="false" only values without timestamps are exchanged. Therefore, getTime() is used to determine the time associated with the values. However, getTime() of the second participant points to the beginning of the window, if we enter a new window. We need to temporarily modify the return value of getTime() to point to the end of the window to be able to store the values at the correct point in time.

Note: This function could be removed by a) removing the option to turn off exchange of substeps or by b) refactoring the communication such that sent/received values always carry a timestamp.

Parameters

m2n	M2N used for communication
receiveData	DataMap associated with received data

Definition at line 206 of file BaseCouplingScheme.cpp.

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◆ receivesInitializedData()

bool precice::cplscheme::BaseCouplingScheme::receivesInitializedData ( ) const

protected

Getter for _receivesInitializedData.

Returns: _receivesInitializedData

Definition at line 505 of file BaseCouplingScheme.cpp.

◆ receiveTimes()

std::vector< double > precice::cplscheme::BaseCouplingScheme::receiveTimes ( const m2n::PtrM2N & m2n )

protected

Definition at line 152 of file BaseCouplingScheme.cpp.

◆ reinitialize()

void precice::cplscheme::BaseCouplingScheme::reinitialize ( )

finaloverridevirtual

Reinitializes the coupling scheme, coupling data, and acceleration schemes.

Implements precice::cplscheme::CouplingScheme.

Definition at line 309 of file BaseCouplingScheme.cpp.

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◆ requireAction()

void precice::cplscheme::BaseCouplingScheme::requireAction ( Action action )

finaloverridevirtual

Sets an action required to be performed by the accessor.

Implements precice::cplscheme::CouplingScheme.

Definition at line 578 of file BaseCouplingScheme.cpp.

◆ requiresSubsteps()

bool precice::cplscheme::BaseCouplingScheme::requiresSubsteps ( ) const

finaloverrideprotectedvirtual

Returns true if any send data of the scheme requires substeps.

Implements precice::cplscheme::CouplingScheme.

Definition at line 908 of file BaseCouplingScheme.cpp.

◆ secondExchange()

void precice::cplscheme::BaseCouplingScheme::secondExchange ( )

finaloverridevirtual

Exchanges the second set of data.

This concludes the step of the coupling scheme

Precondition: secondSynchronization() was called

Implements precice::cplscheme::CouplingScheme.

Definition at line 364 of file BaseCouplingScheme.cpp.

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◆ secondSynchronization()

CouplingScheme::ChangedMeshes precice::cplscheme::BaseCouplingScheme::secondSynchronization ( )

finaloverridevirtual

Receive mesh changes from remote participants in the second step.

At this point, the remote participant may have changed the meshes if it is using a serial coupling scheme. In contrast, the local participant has already communicated local changes to the remote participant during firstSynchronization(). Hence we only need to receive remote changes here.

Note: local changes are covered by firstSynchronization()

Returns: MeshIDs of remotely changed meshes.

Precondition: firstExchange() was called

Implements precice::cplscheme::CouplingScheme.

Definition at line 359 of file BaseCouplingScheme.cpp.

◆ sendConvergence()

void precice::cplscheme::BaseCouplingScheme::sendConvergence ( const m2n::PtrM2N & m2n )

protected

sends convergence to other participant via m2n

Parameters

m2n	used for sending

Definition at line 878 of file BaseCouplingScheme.cpp.

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◆ sendData()

void precice::cplscheme::BaseCouplingScheme::sendData	(	const m2n::PtrM2N &	m2n,
		const DataMap &	sendData )

protected

Sends data sendDataIDs given in mapCouplingData with communication.

Parameters

m2n	M2N used for communication
sendData	DataMap associated with sent data

Definition at line 112 of file BaseCouplingScheme.cpp.

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◆ sendsInitializedData()

bool precice::cplscheme::BaseCouplingScheme::sendsInitializedData ( ) const

finaloverridevirtual

Getter for _sendsInitializedData.

Returns: _sendsInitializedData

Implements precice::cplscheme::CouplingScheme.

Definition at line 330 of file BaseCouplingScheme.cpp.

◆ sendTimes()

void precice::cplscheme::BaseCouplingScheme::sendTimes	(	const m2n::PtrM2N &	m2n,
		precice::span< double const >	times )

protected

Definition at line 103 of file BaseCouplingScheme.cpp.

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◆ setAcceleration()

void precice::cplscheme::BaseCouplingScheme::setAcceleration ( const acceleration::PtrAcceleration & acceleration )

Set an acceleration technique.

Definition at line 654 of file BaseCouplingScheme.cpp.

◆ setDoesFirstStep()

void precice::cplscheme::BaseCouplingScheme::setDoesFirstStep ( bool doesFirstStep )

protected

Setter for _doesFirstStep.

Definition at line 494 of file BaseCouplingScheme.cpp.

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◆ setNextTimeWindowSize()

void precice::cplscheme::BaseCouplingScheme::setNextTimeWindowSize ( double timeWindowSize )

protected

Setter for _nextTimeWindowSize.

Parameters

timeWindowSize

Definition at line 264 of file BaseCouplingScheme.cpp.

◆ setTimeWindows()

void precice::cplscheme::BaseCouplingScheme::setTimeWindows ( int timeWindows )

protected

Setter for _timeWindows.

Sets the computed time windows of the coupling scheme. Used for testing to allow to advance in time without a coupling partner.

Parameters

timeWindows number of time windows

Definition at line 510 of file BaseCouplingScheme.cpp.

◆ setTimeWindowSize()

void precice::cplscheme::BaseCouplingScheme::setTimeWindowSize ( double timeWindowSize )

protected

Setter for _timeWindowSize.

Parameters

timeWindowSize

Definition at line 259 of file BaseCouplingScheme.cpp.

◆ storeIteration()

void precice::cplscheme::BaseCouplingScheme::storeIteration ( )

protected

used for storing all Data at end of doImplicitStep for later reference.

Definition at line 819 of file BaseCouplingScheme.cpp.

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◆ willDataBeExchanged()

bool precice::cplscheme::BaseCouplingScheme::willDataBeExchanged ( double lastSolverTimeStepSize ) const

finaloverridevirtual

Returns true, if data will be exchanged when calling advance().

Also returns true after the last call of advance() at the end of the simulation.

Parameters

lastSolverTimeStepSize [IN] The size of the last time step computed by the solver calling willDataBeExchanged().

Implements precice::cplscheme::CouplingScheme.

Definition at line 481 of file BaseCouplingScheme.cpp.

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Member Data Documentation

◆ _acceleration

acceleration::PtrAcceleration precice::cplscheme::BaseCouplingScheme::_acceleration

protected

Acceleration method to speedup iteration convergence.

Definition at line 239 of file BaseCouplingScheme.hpp.

◆ _allData

DataMap precice::cplscheme::BaseCouplingScheme::_allData

protected

All send and receive data as a map "data ID -> data".

Definition at line 236 of file BaseCouplingScheme.hpp.

◆ _convergenceMeasures

std::vector<ConvergenceMeasureContext> precice::cplscheme::BaseCouplingScheme::_convergenceMeasures

private

All convergence measures of coupling iterations.

Before initialization, only dataID and measure variables are filled. Then, the data is fetched from send and receive data assigned to the cpl scheme.

Definition at line 511 of file BaseCouplingScheme.hpp.

◆ _convergenceWriter

std::shared_ptr<io::TXTTableWriter> precice::cplscheme::BaseCouplingScheme::_convergenceWriter

private

Writes out coupling convergence within all time windows.

Definition at line 479 of file BaseCouplingScheme.hpp.

◆ _couplingMode

CouplingMode precice::cplscheme::BaseCouplingScheme::_couplingMode = Undefined

private

Coupling mode used by coupling scheme.

Definition at line 416 of file BaseCouplingScheme.hpp.

◆ _doesFirstStep

bool precice::cplscheme::BaseCouplingScheme::_doesFirstStep = false

private

True, if local participant is the one starting the explicit scheme.

Definition at line 451 of file BaseCouplingScheme.hpp.

◆ _fulfilledActions

std::set<Action> precice::cplscheme::BaseCouplingScheme::_fulfilledActions

private

Definition at line 470 of file BaseCouplingScheme.hpp.

◆ _hasConverged

bool precice::cplscheme::BaseCouplingScheme::_hasConverged = false

private

True if implicit scheme converged.

Definition at line 473 of file BaseCouplingScheme.hpp.

◆ _hasDataBeenReceived

bool precice::cplscheme::BaseCouplingScheme::_hasDataBeenReceived = false

private

True, if data has been received from other participant. Flag is used to make sure that coupling scheme is implemented and used correctly.

Definition at line 463 of file BaseCouplingScheme.hpp.

◆ _isInitialized

bool precice::cplscheme::BaseCouplingScheme::_isInitialized = false

private

True, if coupling has been initialized.

Definition at line 466 of file BaseCouplingScheme.hpp.

◆ _isTimeWindowComplete

bool precice::cplscheme::BaseCouplingScheme::_isTimeWindowComplete = false

private

True, if _time == _timeWindowStartTime + _timeWindowSize and (coupling has converged or _iterations == _maxIterations)

Definition at line 454 of file BaseCouplingScheme.hpp.

◆ _iterations

int precice::cplscheme::BaseCouplingScheme::_iterations = -1

private

Number of iterations in current time window. _iterations <= _maxIterations.

Definition at line 445 of file BaseCouplingScheme.hpp.

◆ _iterationsWriter

std::shared_ptr<io::TXTTableWriter> precice::cplscheme::BaseCouplingScheme::_iterationsWriter

private

Responsible for monitoring iteration count over time window.

Definition at line 476 of file BaseCouplingScheme.hpp.

◆ _localParticipant

std::string precice::cplscheme::BaseCouplingScheme::_localParticipant = "unknown"

private

Local participant name.

Definition at line 482 of file BaseCouplingScheme.hpp.

◆ _log

logging::Logger precice::cplscheme::BaseCouplingScheme::_log {"cplscheme::BaseCouplingScheme"}

mutableprivate

Definition at line 418 of file BaseCouplingScheme.hpp.

◆ _maxIterations

int precice::cplscheme::BaseCouplingScheme::_maxIterations = -1

private

Limit of iterations during one time window. Continue to next time window, if _iterations == _maxIterations.

Definition at line 442 of file BaseCouplingScheme.hpp.

◆ _maxTime

double precice::cplscheme::BaseCouplingScheme::_maxTime

private

Maximum time being computed. End of simulation is reached, if getTime() == _maxTime.

Definition at line 421 of file BaseCouplingScheme.hpp.

◆ _maxTimeWindows

int precice::cplscheme::BaseCouplingScheme::_maxTimeWindows

private

Number of time windows that have to be computed. End of simulation is reached, if _timeWindows == _maxTimeWindows.

Definition at line 424 of file BaseCouplingScheme.hpp.

◆ _minIterations

int precice::cplscheme::BaseCouplingScheme::_minIterations = -1

private

Lower limit of iterations during one time window. Prevents convergence if _iterations < _minIterations.

Definition at line 439 of file BaseCouplingScheme.hpp.

◆ _nextTimeWindowSize

double precice::cplscheme::BaseCouplingScheme::_nextTimeWindowSize = UNDEFINED_TIME_WINDOW_SIZE

private

time window size of next window (acts as buffer for time windows size provided by first participant, if using first participant method)

Definition at line 433 of file BaseCouplingScheme.hpp.

◆ _receivesInitializedData

bool precice::cplscheme::BaseCouplingScheme::_receivesInitializedData = false

private

True, if this participant has to receive initialized data.

Definition at line 460 of file BaseCouplingScheme.hpp.

◆ _requiredActions

std::set<Action> precice::cplscheme::BaseCouplingScheme::_requiredActions

private

Definition at line 468 of file BaseCouplingScheme.hpp.

◆ _sendsInitializedData

bool precice::cplscheme::BaseCouplingScheme::_sendsInitializedData = false

private

True, if this participant has to send initialized data.

Definition at line 457 of file BaseCouplingScheme.hpp.

◆ _time

impl::TimeHandler precice::cplscheme::BaseCouplingScheme::_time

private

Time handler.

Definition at line 436 of file BaseCouplingScheme.hpp.

◆ _timeWindows

int precice::cplscheme::BaseCouplingScheme::_timeWindows = 0

private

number of completed time windows; _timeWindows <= _maxTimeWindows

Definition at line 427 of file BaseCouplingScheme.hpp.

◆ _timeWindowSize

double precice::cplscheme::BaseCouplingScheme::_timeWindowSize = UNDEFINED_TIME_WINDOW_SIZE

private

size of time window; _timeWindowSize <= _maxTime

Definition at line 430 of file BaseCouplingScheme.hpp.

◆ _totalIterations

int precice::cplscheme::BaseCouplingScheme::_totalIterations = -1

private

Number of total iterations performed.

Definition at line 448 of file BaseCouplingScheme.hpp.

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

src/cplscheme/BaseCouplingScheme.hpp
src/cplscheme/BaseCouplingScheme.cpp

Classes

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ CouplingMode

Constructor & Destructor Documentation

◆ BaseCouplingScheme()

Member Function Documentation

◆ addComputedTime()

◆ addConvergenceMeasure()

◆ addCouplingData()

◆ advanceTXTWriters()

◆ anyDataRequiresInitialization()

◆ checkCompletenessRequiredActions()

◆ checkCouplingDataAvailable()

◆ determineInitialDataExchange()

◆ determineInitialReceive()

◆ determineInitialSend()

◆ doesFirstStep()

◆ doImplicitStep()

◆ exchangeFirstData()

◆ exchangeInitialData()

◆ exchangeSecondData()

◆ finalize()

◆ firstExchange()

◆ firstSynchronization()

◆ getAccelerationData()

◆ getNextTimeStepMaxSize()

◆ getNextTimeWindowSize()

◆ getTime()

◆ getTimeWindowProgress()

◆ getTimeWindows()

◆ getTimeWindowSize()

◆ getTimeWindowStart()

◆ getWindowEndTime()

◆ getWindowStartTime()

◆ hasAnySendData()

◆ hasConverged()

◆ hasDataBeenReceived()

◆ hasTimeWindowSize()

◆ implicitDataToReceive()

◆ initialize()

◆ initializeReceiveDataStorage()

◆ initializeTXTWriters()

◆ initializeWithZeroInitialData()

◆ isActionFulfilled()

◆ isActionRequired()

◆ isCouplingOngoing()

◆ isExplicitCouplingScheme()

◆ isImplicitCouplingScheme()

◆ isInitialized()

◆ isTimeWindowComplete()

◆ localParticipant()

◆ markActionFulfilled()

◆ measureConvergence()

◆ moveToNextWindow()

◆ newConvergenceMeasurements()

◆ notifyDataHasBeenReceived()

◆ printCouplingState()

◆ reachedEndOfTimeWindow()

◆ receiveConvergence()

◆ receiveData()

◆ receiveDataForWindowEnd()

◆ receivesInitializedData()

◆ receiveTimes()

◆ reinitialize()

◆ requireAction()

◆ requiresSubsteps()

◆ secondExchange()

◆ secondSynchronization()

◆ sendConvergence()

◆ sendData()

◆ sendsInitializedData()

◆ sendTimes()