SolutionHistory is basically a container of SolutionStates. SolutionHistory maintains a collection of SolutionStates for later retrival and reuse, such as checkpointing, restart, and undo operations. More...

#include <Tempus_Integrator.hpp>

Inheritance diagram for Tempus::SolutionHistory< Scalar >:

[legend]

Public Member Functions
	SolutionHistory ()
	Default Contructor. More...

	SolutionHistory (std::string name, Teuchos::RCP< std::vector< Teuchos::RCP< SolutionState< Scalar > > > > history, Teuchos::RCP< Interpolator< Scalar > > interpolator, StorageType storageType, int storageLimit)
	Contructor. More...

	~SolutionHistory ()
	Destructor. More...

Teuchos::RCP< const Teuchos::ParameterList >	getValidParameters () const
	Return a valid ParameterList with current settings. More...

Teuchos::RCP < Teuchos::ParameterList >	getNonconstParameterList ()
	Return a valid non-const ParameterList with current settings. More...

void	printHistory (std::string verb="low") const
	Print information on States in the SolutionHistory. More...

void	initialize () const
	Initialize SolutionHistory. More...

bool	isInitialized ()
	Return if SolutionHistory is initialized. More...

Public Member Functions inherited from Teuchos::Describable
void	describe (std::ostream &out, const EVerbosityLevel verbLevel=verbLevel_default) const

virtual	~Describable ()

	LabeledObject ()

virtual	~LabeledObject ()

virtual void	setObjectLabel (const std::string &objectLabel)

virtual std::string	getObjectLabel () const

DescribableStreamManipulatorState	describe (const Describable &describable, const EVerbosityLevel verbLevel=Describable::verbLevel_default)

std::ostream &	operator<< (std::ostream &os, const DescribableStreamManipulatorState &d)

Public Member Functions inherited from Teuchos::VerboseObject< SolutionHistory< Scalar > >
	VerboseObject (const EVerbosityLevel verbLevel=VERB_DEFAULT, const RCP< FancyOStream > &oStream=Teuchos::null)

virtual const VerboseObject &	setVerbLevel (const EVerbosityLevel verbLevel) const

virtual const VerboseObject &	setOverridingVerbLevel (const EVerbosityLevel verbLevel) const

virtual EVerbosityLevel	getVerbLevel () const

TEUCHOSPARAMETERLIST_LIB_DLL_EXPORT RCP< const ParameterList >	getValidVerboseObjectSublist ()

TEUCHOSPARAMETERLIST_LIB_DLL_EXPORT void	setupVerboseObjectSublist (ParameterList *paramList)

TEUCHOSPARAMETERLIST_LIB_DLL_EXPORT void	readVerboseObjectSublist (ParameterList paramList, RCP< FancyOStream > oStream, EVerbosityLevel *verbLevel)

void	readVerboseObjectSublist (ParameterList paramList, VerboseObject< ObjectType > verboseObject)

Public Member Functions inherited from Teuchos::VerboseObjectBase
virtual	~VerboseObjectBase ()

	VerboseObjectBase (const RCP< FancyOStream > &oStream=Teuchos::null)

virtual const VerboseObjectBase &	setOStream (const RCP< FancyOStream > &oStream) const

virtual const VerboseObjectBase &	setOverridingOStream (const RCP< FancyOStream > &oStream) const

virtual VerboseObjectBase &	setLinePrefix (const std::string &linePrefix)

virtual RCP< FancyOStream >	getOStream () const

virtual RCP< FancyOStream >	getOverridingOStream () const

virtual std::string	getLinePrefix () const

virtual OSTab	getOSTab (const int tabs=1, const std::string &linePrefix="") const

Protected Attributes
std::string	name_

Teuchos::RCP< std::vector < Teuchos::RCP< SolutionState < Scalar > > > >	history_

Teuchos::RCP< Interpolator < Scalar > >	interpolator_

StorageType	storageType_

int	storageLimit_

Teuchos::RCP< SolutionState < Scalar > >	workingState_
	The state being worked on. More...

bool	isInitialized_
	Bool if SolutionHistory is initialized. More...

Basic SolutionHistory Methods
void	addState (const Teuchos::RCP< SolutionState< Scalar > > &state, bool doChecks=true)
	Add solution state to history. More...

void	addWorkingState (const Teuchos::RCP< SolutionState< Scalar > > &state, const bool updateTime=true)
	Add a working solution state to history. More...

void	removeState (const Teuchos::RCP< SolutionState< Scalar > > &state)
	Remove solution state. More...

void	removeState (const Scalar time)
	Remove solution state based on time. More...

Teuchos::RCP< SolutionState < Scalar > >	findState (const Scalar time) const
	Find solution state at requested time (no interpolation) More...

Teuchos::RCP< SolutionState < Scalar > >	interpolateState (const Scalar time) const
	Generate and interpolate a new solution state at requested time. More...

void	interpolateState (const Scalar time, SolutionState< Scalar > *state_out) const
	Interpolate solution state at requested time and store in supplied state. More...

void	initWorkingState ()
	Initialize the working state. More...

void	promoteWorkingState ()
	Promote the working state to current state. More...

void	clear ()
	Clear the history. More...

void	copy (Teuchos::RCP< const SolutionHistory< Scalar > > sh)
	Make a shallow copy of SolutionHistory (i.e., only RCPs to states and interpolator). More...

Accessor methods
std::string	getName () const
	Get this SolutionHistory's name. More...

void	setName (std::string name)
	Set this SolutionHistory's name. More...

Teuchos::RCP< std::vector < Teuchos::RCP< SolutionState < Scalar > > > >	getHistory () const
	Get underlining history. More...

void	setHistory (Teuchos::RCP< std::vector< Teuchos::RCP< SolutionState< Scalar > > > > h)
	Set underlining history. More...

Teuchos::RCP< SolutionState < Scalar > >	operator[] (const int i)
	Subscript operator. More...

Teuchos::RCP< const SolutionState< Scalar > >	operator[] (const int i) const
	Subscript operator (const version) More...

Teuchos::RCP< SolutionState < Scalar > >	getCurrentState () const
	Return the current state, i.e., the last accepted state. More...

Teuchos::RCP< SolutionState < Scalar > >	getWorkingState (bool warn=true) const
	Return the working state. More...

int	getNumStates () const
	Get the number of states. More...

Scalar	getCurrentTime () const
	Get the current time. More...

int	getCurrentIndex () const
	Get the current timestep index. More...

void	setStorageLimit (int storage_limit)
	Set the maximum storage of this history. More...

int	getStorageLimit () const
	Get the maximum storage of this history. More...

void	setStorageType (StorageType st)
	Set the storage type via enum. More...

StorageType	getStorageType () const
	Get the enum storage type. More...

void	setStorageTypeString (std::string st)
	Set the storage type via string. More...

std::string	getStorageTypeString () const
	Set the string storage type. More...

Scalar	minTime () const
	Return the current minimum time of the SolutionStates. More...

Scalar	maxTime () const
	Return the current maximum time of the SolutionStates. More...

Teuchos::RCP< SolutionState < Scalar > >	getStateTimeIndexN (bool warn=true) const
	Get the state with timestep index equal to n. More...

Teuchos::RCP< SolutionState < Scalar > >	getStateTimeIndexNM1 (bool warn=true) const
	Get the state with timestep index equal to n-1. More...

Teuchos::RCP< SolutionState < Scalar > >	getStateTimeIndexNM2 (bool warn=true) const
	Get the state with timestep index equal to n-2. More...

Teuchos::RCP< SolutionState < Scalar > >	getStateTimeIndex (int index, bool warn=true) const
	Get the state with timestep index equal to "index". More...

Overridden from Teuchos::Describable
virtual std::string	description () const

virtual void	describe (Teuchos::FancyOStream &out, const Teuchos::EVerbosityLevel verbLevel) const

Interpolation Methods
void	setInterpolator (const Teuchos::RCP< Interpolator< Scalar > > &interpolator)
	Set the interpolator for this history. More...

Teuchos::RCP< Interpolator < Scalar > >	getNonconstInterpolator ()

Teuchos::RCP< const Interpolator< Scalar > >	getInterpolator () const

Teuchos::RCP< Interpolator < Scalar > >	unSetInterpolator ()
	Unset the interpolator for this history. More...

Additional Inherited Members
Static Public Member Functions inherited from Teuchos::VerboseObject< SolutionHistory< Scalar > >
static void	setDefaultVerbLevel (const EVerbosityLevel defaultVerbLevel)

static EVerbosityLevel	getDefaultVerbLevel ()

Static Public Member Functions inherited from Teuchos::VerboseObjectBase
static void	setDefaultOStream (const RCP< FancyOStream > &defaultOStream)

static RCP< FancyOStream >	getDefaultOStream ()

Static Public Attributes inherited from Teuchos::Describable
static const EVerbosityLevel	verbLevel_default

Protected Member Functions inherited from Teuchos::VerboseObject< SolutionHistory< Scalar > >
void	initializeVerboseObject (const EVerbosityLevel verbLevel=VERB_DEFAULT, const RCP< FancyOStream > &oStream=Teuchos::null)

Protected Member Functions inherited from Teuchos::VerboseObjectBase
void	initializeVerboseObjectBase (const RCP< FancyOStream > &oStream=Teuchos::null)

virtual void	informUpdatedVerbosityState () const

Detailed Description

template<typename Scalar>
class Tempus::SolutionHistory< Scalar >

SolutionHistory is basically a container of SolutionStates. SolutionHistory maintains a collection of SolutionStates for later retrival and reuse, such as checkpointing, restart, and undo operations.

The actual storage of the SolutionStates may take several forms:

in memory
on disk
combination
use ATDM DataWareHouse but the interface should be unchanged and very similar to other containers.

SolutionHistory can fill in SolutionStates between other SolutionStates by either

Integrating from one SolutionState to the desired time
- This might include methods like Griewank's algorithm.
Interpolating between SolutionStates
- Interpolated SolutionStates may not be suitable for adjoint solutions, restart, or undo operations (see SolutionState).

There are two sets of indices associated with SolutionHistory: timestep index and the SolutionHistory index. Users are interested in the timestep index as it indicates the solution increment, e.g., $[x^0, ... , x^{n-2}, x^{n-1}, x^{n}]$ , where $n$ is the timestep index. While developers can also be interested in the SolutionHistory index to access the correct SolutionState in the SolutionHistory, e.g., $[S^0, ... , S^{M-1}]$ , where $M$ is the number of SolutionStates in the SolutionHistory (1 $\le M \le$ StorageLimit_).

SolutionHistory will hold upto the StorageLimit_ number of states. Rules of thumb for the minimum storage limit:

Explicit one-step methods can update the solution state in-place –> StorageLimit_ = 1.
Implicit one-step methods need two solution states –> StorageLimit_ = 2.
MultiStep methods require k past solution states –> StorageLimit_ = k+1.

The states contained in the SolutionHistory will often be the last $M$ states for forward time integration, e.g., $[S^0(x^{n-M+1}), ... , S^{M-3}(x^{n-2}), S^{M-2}(x^{n-1}), S^{M-1}(x^{n})]$ , but this is not guaranteed. For example, during transient adjoint sensitivity calculations, not all the forward states can be stored and therefore will be recalculated. Thus intermediate states are kept to reduce recomputation costs, i.e., so one does not recalculate from the initial conditions to the desired time. This means the states in the SolutionHistory may not have consecutive timestep indices, e.g., $[..., S^{M-4}(x^{n-200}), S^{M-3}(x^{n-100}), S^{M-2}(x^{n-1}), S^{M-1}(x^{n})]$ .

The SolutionHistory is kept in chronological order, starting with the oldest state and ending with the latest.

The "current" state is the latest solution that has been successfully solved. The solution from the last successful time step or the initial conditions.

The "working" state is the state which is being worked on. It is valid from initialization (e.g., copied from the "current" state), during the the timestep, and until it is accepted and promoted to the new "current" state. Between the promotion and the initialization, the workingState_ is invalid (i.e., Teuchos::null). If the timestep fails, the workingState_ is maintained, and the timestep is retried until the Integrator declares a successful timestep or the time integration is a failure. The SolutionHistory indices associated with the currentState_ and the workingState_ vary during the time step loop, and are

Loop Portion	currentState_	workingState_
Before initializing working state	PASS -> -1 FAIL -> -2	PASS -> Invalid FAIL -> -1
After initializing working state During timestep Before accepting timestep	-2	-1
After accepting timestep	PASS -> -1 FAIL -> -2	PASS -> Invalid FAIL -> -1

Initial conditions are considered PASSing, which sets up the loop. The difference between the currentState_ timestep index and the workingState_ timestep index is guaranteed to be one (except for when StorageLimit_ = 1, i.e., explicit one-step methods that can update the solution in-place).

Definition at line 25 of file Tempus_Integrator.hpp.

Constructor & Destructor Documentation

template<class Scalar >

Tempus::SolutionHistory< Scalar >::SolutionHistory ( )

Default Contructor.

Definition at line 23 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

Tempus::SolutionHistory< Scalar >::SolutionHistory	(	std::string	name,
		Teuchos::RCP< std::vector< Teuchos::RCP< SolutionState< Scalar > > > >	history,
		Teuchos::RCP< Interpolator< Scalar > >	interpolator,
		StorageType	storageType,
		int	storageLimit
	)

Contructor.

Definition at line 37 of file Tempus_SolutionHistory_impl.hpp.

template<typename Scalar >

Tempus::SolutionHistory< Scalar >::~SolutionHistory ( )

inline

Destructor.

Definition at line 136 of file Tempus_SolutionHistory_decl.hpp.

Member Function Documentation

template<class Scalar >

void Tempus::SolutionHistory< Scalar >::addState	(	const Teuchos::RCP< SolutionState< Scalar > > &	state,
		bool	doChecks = `true`
	)

Add solution state to history.

Definition at line 56 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

void Tempus::SolutionHistory< Scalar >::addWorkingState	(	const Teuchos::RCP< SolutionState< Scalar > > &	state,
		const bool	updateTime = `true`
	)

Add a working solution state to history.

Definition at line 134 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

void Tempus::SolutionHistory< Scalar >::removeState ( const Teuchos::RCP< SolutionState< Scalar > > & state )

Remove solution state.

Definition at line 152 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

void Tempus::SolutionHistory< Scalar >::removeState ( const Scalar time )

Remove solution state based on time.

Definition at line 174 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

Teuchos::RCP< SolutionState< Scalar > > Tempus::SolutionHistory< Scalar >::findState ( const Scalar time ) const

Find solution state at requested time (no interpolation)

Definition at line 183 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

Teuchos::RCP< SolutionState< Scalar > > Tempus::SolutionHistory< Scalar >::interpolateState ( const Scalar time ) const

Generate and interpolate a new solution state at requested time.

Definition at line 211 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

void Tempus::SolutionHistory< Scalar >::interpolateState	(	const Scalar	time,
		SolutionState< Scalar > *	state_out
	)		const

Interpolate solution state at requested time and store in supplied state.

Definition at line 221 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

void Tempus::SolutionHistory< Scalar >::initWorkingState ( )

Initialize the working state.

Initialize the working state

Definition at line 230 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

void Tempus::SolutionHistory< Scalar >::promoteWorkingState ( )

Promote the working state to current state.

Definition at line 264 of file Tempus_SolutionHistory_impl.hpp.

template<typename Scalar >

void Tempus::SolutionHistory< Scalar >::clear ( )

inline

Clear the history.

Definition at line 171 of file Tempus_SolutionHistory_decl.hpp.

template<class Scalar >

void Tempus::SolutionHistory< Scalar >::copy ( Teuchos::RCP< const SolutionHistory< Scalar > > sh )

Make a shallow copy of SolutionHistory (i.e., only RCPs to states and interpolator).

Definition at line 285 of file Tempus_SolutionHistory_impl.hpp.

template<typename Scalar >

std::string Tempus::SolutionHistory< Scalar >::getName ( ) const

inline

Get this SolutionHistory's name.

Definition at line 180 of file Tempus_SolutionHistory_decl.hpp.

template<typename Scalar >

void Tempus::SolutionHistory< Scalar >::setName ( std::string name )

inline

Set this SolutionHistory's name.

Definition at line 183 of file Tempus_SolutionHistory_decl.hpp.

template<typename Scalar >

Teuchos::RCP<std::vector<Teuchos::RCP<SolutionState<Scalar> > > > Tempus::SolutionHistory< Scalar >::getHistory ( ) const

inline

Get underlining history.

Definition at line 187 of file Tempus_SolutionHistory_decl.hpp.

template<typename Scalar >

void Tempus::SolutionHistory< Scalar >::setHistory ( Teuchos::RCP< std::vector< Teuchos::RCP< SolutionState< Scalar > > > > h )

inline

Set underlining history.

Definition at line 190 of file Tempus_SolutionHistory_decl.hpp.

template<typename Scalar >

Teuchos::RCP<SolutionState<Scalar> > Tempus::SolutionHistory< Scalar >::operator[] ( const int i )

inline

Subscript operator.

Definition at line 195 of file Tempus_SolutionHistory_decl.hpp.

template<typename Scalar >

Teuchos::RCP<const SolutionState<Scalar> > Tempus::SolutionHistory< Scalar >::operator[] ( const int i ) const

inline

Subscript operator (const version)

Definition at line 205 of file Tempus_SolutionHistory_decl.hpp.

template<typename Scalar >

Teuchos::RCP<SolutionState<Scalar> > Tempus::SolutionHistory< Scalar >::getCurrentState ( ) const

inline

Return the current state, i.e., the last accepted state.

Definition at line 215 of file Tempus_SolutionHistory_decl.hpp.

template<typename Scalar >

Teuchos::RCP<SolutionState<Scalar> > Tempus::SolutionHistory< Scalar >::getWorkingState ( bool warn = true ) const

inline

Return the working state.

Definition at line 226 of file Tempus_SolutionHistory_decl.hpp.

template<typename Scalar >

int Tempus::SolutionHistory< Scalar >::getNumStates ( ) const

inline

Get the number of states.

Definition at line 239 of file Tempus_SolutionHistory_decl.hpp.

template<typename Scalar >

Scalar Tempus::SolutionHistory< Scalar >::getCurrentTime ( ) const

inline

Get the current time.

Definition at line 242 of file Tempus_SolutionHistory_decl.hpp.

template<typename Scalar >

int Tempus::SolutionHistory< Scalar >::getCurrentIndex ( ) const

inline

Get the current timestep index.

Definition at line 245 of file Tempus_SolutionHistory_decl.hpp.

template<class Scalar >

void Tempus::SolutionHistory< Scalar >::setStorageLimit ( int storage_limit )

Set the maximum storage of this history.

Definition at line 305 of file Tempus_SolutionHistory_impl.hpp.

template<typename Scalar >

int Tempus::SolutionHistory< Scalar >::getStorageLimit ( ) const

inline

Get the maximum storage of this history.

Definition at line 251 of file Tempus_SolutionHistory_decl.hpp.

template<class Scalar >

void Tempus::SolutionHistory< Scalar >::setStorageType ( StorageType st )

Set the storage type via enum.

Definition at line 345 of file Tempus_SolutionHistory_impl.hpp.

template<typename Scalar >

StorageType Tempus::SolutionHistory< Scalar >::getStorageType ( ) const

inline

Get the enum storage type.

Definition at line 257 of file Tempus_SolutionHistory_decl.hpp.

template<class Scalar >

void Tempus::SolutionHistory< Scalar >::setStorageTypeString ( std::string st )

Set the storage type via string.

Definition at line 357 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

std::string Tempus::SolutionHistory< Scalar >::getStorageTypeString ( ) const

Set the string storage type.

Definition at line 378 of file Tempus_SolutionHistory_impl.hpp.

template<typename Scalar >

Scalar Tempus::SolutionHistory< Scalar >::minTime ( ) const

inline

Return the current minimum time of the SolutionStates.

Definition at line 266 of file Tempus_SolutionHistory_decl.hpp.

template<typename Scalar >

Scalar Tempus::SolutionHistory< Scalar >::maxTime ( ) const

inline

Return the current maximum time of the SolutionStates.

Definition at line 269 of file Tempus_SolutionHistory_decl.hpp.

template<class Scalar >

Teuchos::RCP< SolutionState< Scalar > > Tempus::SolutionHistory< Scalar >::getStateTimeIndexN ( bool warn = true ) const

Get the state with timestep index equal to n.

If not available return Teuchos::null;

Definition at line 391 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

Teuchos::RCP< SolutionState< Scalar > > Tempus::SolutionHistory< Scalar >::getStateTimeIndexNM1 ( bool warn = true ) const

Get the state with timestep index equal to n-1.

If not available return Teuchos::null;

Definition at line 411 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

Teuchos::RCP< SolutionState< Scalar > > Tempus::SolutionHistory< Scalar >::getStateTimeIndexNM2 ( bool warn = true ) const

Get the state with timestep index equal to n-2.

If not available return Teuchos::null;

Definition at line 449 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

Teuchos::RCP< SolutionState< Scalar > > Tempus::SolutionHistory< Scalar >::getStateTimeIndex	(	int	index,
		bool	warn = `true`
	)		const

Get the state with timestep index equal to "index".

If not available return Teuchos::null;

Definition at line 490 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

Teuchos::RCP< const Teuchos::ParameterList > Tempus::SolutionHistory< Scalar >::getValidParameters ( ) const

Return a valid ParameterList with current settings.

Definition at line 549 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

Teuchos::RCP< Teuchos::ParameterList > Tempus::SolutionHistory< Scalar >::getNonconstParameterList ( )

Return a valid non-const ParameterList with current settings.

Definition at line 574 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

std::string Tempus::SolutionHistory< Scalar >::description ( ) const

virtual

Reimplemented from Teuchos::Describable.

Definition at line 515 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

void Tempus::SolutionHistory< Scalar >::describe	(	Teuchos::FancyOStream &	out,
		const Teuchos::EVerbosityLevel	verbLevel
	)		const

virtual

Reimplemented from Teuchos::Describable.

Definition at line 522 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

void Tempus::SolutionHistory< Scalar >::setInterpolator ( const Teuchos::RCP< Interpolator< Scalar > > & interpolator )

Set the interpolator for this history.

Definition at line 581 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

Teuchos::RCP< Interpolator< Scalar > > Tempus::SolutionHistory< Scalar >::getNonconstInterpolator ( )

Definition at line 594 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

Teuchos::RCP< const Interpolator< Scalar > > Tempus::SolutionHistory< Scalar >::getInterpolator ( ) const

Definition at line 601 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

Teuchos::RCP< Interpolator< Scalar > > Tempus::SolutionHistory< Scalar >::unSetInterpolator ( )

Unset the interpolator for this history.

Definition at line 608 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

void Tempus::SolutionHistory< Scalar >::printHistory ( std::string verb = "low" ) const

Print information on States in the SolutionHistory.

Definition at line 617 of file Tempus_SolutionHistory_impl.hpp.

template<class Scalar >

void Tempus::SolutionHistory< Scalar >::initialize ( ) const

Initialize SolutionHistory.

This function will check if all member data is initialized and is consistent. This function does not make member data consistent, but just checks it. This ensures it is inexpensive.

Definition at line 646 of file Tempus_SolutionHistory_impl.hpp.

template<typename Scalar >

bool Tempus::SolutionHistory< Scalar >::isInitialized ( )

inline

Return if SolutionHistory is initialized.

Definition at line 332 of file Tempus_SolutionHistory_decl.hpp.