Coupling scheme for parallel coupling, i.e. simultaneous execution of two coupled participants. More...

#include <ParallelCouplingScheme.hpp>

Inheritance diagram for precice::cplscheme::ParallelCouplingScheme:

Collaboration diagram for precice::cplscheme::ParallelCouplingScheme:

Public Member Functions
	ParallelCouplingScheme (double maxTime, int maxTimeWindows, double timeWindowSize, const std::string &firstParticipant, const std::string &secondParticipant, const std::string &localParticipant, m2n::PtrM2N m2n, constants::TimesteppingMethod dtMethod, CouplingMode cplMode, int minIterations, int maxIterations)
	Constructor.

	ParallelCouplingScheme (double maxTime, int maxTimeWindows, double timeWindowSize, const std::string &firstParticipant, const std::string &secondParticipant, const std::string &localParticipant, m2n::PtrM2N m2n, constants::TimesteppingMethod dtMethod, CouplingMode cplMode)

Public Member Functions inherited from precice::cplscheme::BiCouplingScheme
	BiCouplingScheme (double maxTime, int maxTimeWindows, double timeWindowSize, std::string firstParticipant, std::string secondParticipant, const std::string &localParticipant, m2n::PtrM2N m2n, int minIterations, int maxIterations, CouplingMode cplMode, constants::TimesteppingMethod dtMethod)

void	addDataToSend (const mesh::PtrData &data, mesh::PtrMesh mesh, bool requiresInitialization, bool exchangeSubsteps)
	Adds data to be sent on data exchange and possibly be modified during coupling iterations.

void	addDataToReceive (const mesh::PtrData &data, mesh::PtrMesh mesh, bool requiresInitialization, bool exchangeSubsteps)
	Adds data to be received on data exchange.

void	determineInitialDataExchange () override
	Determines which data is initialized and therefore has to be exchanged during initialize.

std::vector< std::string >	getCouplingPartners () const override final
	returns list of all coupling partners

bool	hasAnySendData () override final

bool	hasSendData (DataID dataID)

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

bool	sendsInitializedData () const override final
	Getter for _sendsInitializedData.

bool	isInitialized () const override final
	getter for _isInitialized

bool	addComputedTime (double timeToAdd) override final
	Adds newly computed time. Has to be called before every advance.

bool	willDataBeExchanged (double lastSolverTimeStepSize) const override final
	Returns true, if data will be exchanged when calling advance().

bool	hasDataBeenReceived () const override final
	getter for _hasDataBeenReceived

double	getTime () const override final
	getter for _time

double	getTimeWindowStart () const override final

int	getTimeWindows () const override final
	getter for _timeWindows

bool	hasTimeWindowSize () const override final
	Function to check whether time window size is defined by coupling scheme.

double	getTimeWindowSize () const override final
	Returns the time window size, if one is given by the coupling scheme.

double	getNextTimeStepMaxSize () const override final
	Returns the maximal size of the next time step to be computed.

bool	isCouplingOngoing () const override final
	Returns true, when the coupled simulation is still ongoing.

bool	isTimeWindowComplete () const override final
	Returns true, when the accessor can advance to the next time window.

bool	isActionRequired (Action action) const override final
	Returns true, if the given action has to be performed by the accessor.

bool	isActionFulfilled (Action action) const override final
	Returns true, if the given action has to be performed by the accessor.

void	markActionFulfilled (Action action) override final
	Tells the coupling scheme that the accessor has performed the given action.

void	requireAction (Action action) override final
	Sets an action required to be performed by the accessor.

std::string	printCouplingState () const override
	Returns coupling state information.

void	finalize () override final
	Finalizes the coupling scheme.

void	initialize (double startTime, int startTimeWindow) override final
	Initializes the coupling scheme.

ChangedMeshes	firstSynchronization (const ChangedMeshes &changes) override final

void	firstExchange () override final

ChangedMeshes	secondSynchronization () override final

void	secondExchange () override final

void	addConvergenceMeasure (int dataID, bool suffices, bool strict, impl::PtrConvergenceMeasure measure, bool doesLogging)
	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.

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 ()

Private Member Functions
void	exchangeInitialData () override final
	implements functionality for initialize in base class.

void	exchangeFirstData () override final
	Functions needed for advance()

void	exchangeSecondData () override final
	Exchanges the second set of data.

DataMap &	getAccelerationData () override final
	interface to provide accelerated data, depending on coupling scheme being used

Private Attributes
logging::Logger	_log {"cplscheme::ParallelCouplingScheme"}

Friends
struct	testing::ParallelCouplingSchemeFixture

Additional Inherited Members
Public Types inherited from precice::cplscheme::BaseCouplingScheme
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>

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).

Protected Member Functions inherited from precice::cplscheme::BiCouplingScheme
DataMap &	getSendData ()
	Returns all data to be sent.

DataMap &	getReceiveData ()
	Returns all data to be received.

const DataMap &	getReceiveData () const
	Returns all data to be received.

CouplingData *	getSendData (DataID dataID)
	Sets the values.

CouplingData *	getReceiveData (DataID dataID)
	Returns all data to be received with data ID as given.

m2n::PtrM2N	getM2N () const

void	initializeReceiveDataStorage () override final
	Functions needed for initialize()

Protected Member Functions inherited from precice::cplscheme::BaseCouplingScheme
void	sendNumberOfTimeSteps (const m2n::PtrM2N &m2n, const int numberOfTimeSteps)

void	sendTimes (const m2n::PtrM2N &m2n, const Eigen::VectorXd &times)

void	sendData (const m2n::PtrM2N &m2n, const DataMap &sendData)
	Sends data sendDataIDs given in mapCouplingData with communication.

int	receiveNumberOfTimeSteps (const m2n::PtrM2N &m2n)

Eigen::VectorXd	receiveTimes (const m2n::PtrM2N &m2n, int nTimeSteps)

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 override final
	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 override final
	Returns the name of the local participant.

Protected Attributes inherited from precice::cplscheme::BaseCouplingScheme
DataMap	_allData
	All send and receive data as a map "data ID -> data".

acceleration::PtrAcceleration	_acceleration
	Acceleration method to speedup iteration convergence.

Detailed Description

Coupling scheme for parallel coupling, i.e. simultaneous execution of two coupled participants.

For more information, look into Benjamin's thesis, Section 3.5. https://mediatum.ub.tum.de/doc/1320661/document.pdf

Definition at line 26 of file ParallelCouplingScheme.hpp.

Constructor & Destructor Documentation

◆ ParallelCouplingScheme() [1/2]

precice::cplscheme::ParallelCouplingScheme::ParallelCouplingScheme	(	double	maxTime,
		int	maxTimeWindows,
		double	timeWindowSize,
		const std::string &	firstParticipant,
		const std::string &	secondParticipant,
		const std::string &	localParticipant,
		m2n::PtrM2N	m2n,
		constants::TimesteppingMethod	dtMethod,
		CouplingMode	cplMode,
		int	minIterations,
		int	maxIterations )

Constructor.

Parameters

[in]	maxTime	Simulation time limit, or UNDEFINED_MAX_TIME.
[in]	maxTimeWindows	Simulation time windows limit, or UNDEFINED_TIME_WINDOWS.
[in]	timeWindowSize	Simulation time window size.
[in]	firstParticipant	Name of participant starting simulation.
[in]	secondParticipant	Name of second participant in coupling.
[in]	localParticipant	Name of participant using this coupling scheme.
[in]	m2n	Communication object for com. between participants.
[in]	dtMethod	Method used for determining the time window size, see https://www.precice.org/couple-your-code-timestep-sizes.html
[in]	cplMode	Set implicit or explicit coupling
[in]	maxIterations	maximum number of coupling iterations allowed for implicit coupling per time window

Definition at line 10 of file ParallelCouplingScheme.cpp.

◆ ParallelCouplingScheme() [2/2]

precice::cplscheme::ParallelCouplingScheme::ParallelCouplingScheme	(	double	maxTime,
		int	maxTimeWindows,
		double	timeWindowSize,
		const std::string &	firstParticipant,
		const std::string &	secondParticipant,
		const std::string &	localParticipant,
		m2n::PtrM2N	m2n,
		constants::TimesteppingMethod	dtMethod,
		CouplingMode	cplMode )

Definition at line 25 of file ParallelCouplingScheme.cpp.

Member Function Documentation

◆ exchangeFirstData()

void precice::cplscheme::ParallelCouplingScheme::exchangeFirstData ( )

finaloverrideprivatevirtual

Functions needed for advance()

Exchanges the first set of data

Implements precice::cplscheme::BaseCouplingScheme.

Definition at line 63 of file ParallelCouplingScheme.cpp.

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◆ exchangeInitialData()

void precice::cplscheme::ParallelCouplingScheme::exchangeInitialData ( )

finaloverrideprivatevirtual

implements functionality for initialize in base class.

Implements precice::cplscheme::BaseCouplingScheme.

Definition at line 37 of file ParallelCouplingScheme.cpp.

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◆ exchangeSecondData()

void precice::cplscheme::ParallelCouplingScheme::exchangeSecondData ( )

finaloverrideprivatevirtual

Exchanges the second set of data.

Implements precice::cplscheme::BaseCouplingScheme.

Definition at line 75 of file ParallelCouplingScheme.cpp.

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◆ getAccelerationData()

DataMap & precice::cplscheme::ParallelCouplingScheme::getAccelerationData ( )

finaloverrideprivatevirtual

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

Returns: data being accelerated

Implements precice::cplscheme::BaseCouplingScheme.

Definition at line 113 of file ParallelCouplingScheme.cpp.

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Friends And Related Symbol Documentation

◆ testing::ParallelCouplingSchemeFixture

friend struct testing::ParallelCouplingSchemeFixture

friend

Definition at line 27 of file ParallelCouplingScheme.hpp.

Member Data Documentation

◆ _log

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

private

Definition at line 68 of file ParallelCouplingScheme.hpp.

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

src/cplscheme/ParallelCouplingScheme.hpp
src/cplscheme/ParallelCouplingScheme.cpp

Public Member Functions

Private Member Functions

Private Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ParallelCouplingScheme() [1/2]

◆ ParallelCouplingScheme() [2/2]

Member Function Documentation

◆ exchangeFirstData()

◆ exchangeInitialData()

◆ exchangeSecondData()

◆ getAccelerationData()

Friends And Related Symbol Documentation

◆ testing::ParallelCouplingSchemeFixture

Member Data Documentation

◆ _log