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Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar > Class Template Reference

Time integrator suitable for pseudotransient forward sensitivity analysis. More...

#include <Tempus_IntegratorPseudoTransientForwardSensitivity_decl.hpp>

Inheritance diagram for Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >:
Tempus::Integrator< Scalar >

Public Member Functions

 IntegratorPseudoTransientForwardSensitivity (Teuchos::RCP< Teuchos::ParameterList > pList, const Teuchos::RCP< Thyra::ModelEvaluator< Scalar > > &model)
 Constructor with ParameterList and model, and will be fully initialized. More...
 
 IntegratorPseudoTransientForwardSensitivity (const Teuchos::RCP< Thyra::ModelEvaluator< Scalar > > &model, std::string stepperType)
 Constructor with model and "Stepper Type" and is fully initialized with default settings. More...
 
 IntegratorPseudoTransientForwardSensitivity ()
 Destructor. More...
 
virtual ~IntegratorPseudoTransientForwardSensitivity ()
 Destructor. More...
 
virtual void initializeSolutionHistory (Scalar t0, Teuchos::RCP< const Thyra::VectorBase< Scalar > > x0, Teuchos::RCP< const Thyra::VectorBase< Scalar > > xdot0=Teuchos::null, Teuchos::RCP< const Thyra::VectorBase< Scalar > > xdotdot0=Teuchos::null, Teuchos::RCP< const Thyra::MultiVectorBase< Scalar > > DxDp0=Teuchos::null, Teuchos::RCP< const Thyra::MultiVectorBase< Scalar > > DxdotDp0=Teuchos::null, Teuchos::RCP< const Thyra::MultiVectorBase< Scalar > > DxdotdotDp0=Teuchos::null)
 Set the initial state from Thyra::VectorBase(s) More...
 
virtual Teuchos::RCP< const
Thyra::VectorBase< Scalar > > 		getX () const
 Get current the solution, x. More...
 
virtual Teuchos::RCP< const
Thyra::MultiVectorBase< Scalar > > 		getDxDp () const
 
virtual Teuchos::RCP< const
Thyra::VectorBase< Scalar > > 		getXdot () const
 Get current the time derivative of the solution, xdot. More...
 
virtual Teuchos::RCP< const
Thyra::MultiVectorBase< Scalar > > 		getDxdotDp () const
 
virtual Teuchos::RCP< const
Thyra::VectorBase< Scalar > > 		getXdotdot () const
 Get current the second time derivative of the solution, xdotdot. More...
 
virtual Teuchos::RCP< const
Thyra::MultiVectorBase< Scalar > > 		getDxdotdotDp () const
 
Basic integrator methods
virtual bool advanceTime ()
 Advance the solution to timeMax, and return true if successful. More...
 
virtual bool advanceTime (const Scalar timeFinal) override
 Advance the solution to timeFinal, and return true if successful. More...
 
virtual Scalar getTime () const override
 Get current time. More...
 
virtual int getIndex () const override
 Get current index. More...
 
virtual Status getStatus () const override
 Get Status. More...
 
virtual Teuchos::RCP< Stepper
< Scalar > > 		getStepper () const override
 Get the Stepper. More...
 
virtual Teuchos::RCP
< Teuchos::ParameterList > 		getTempusParameterList () override
 Return a copy of the Tempus ParameterList. More...
 
virtual void setTempusParameterList (Teuchos::RCP< Teuchos::ParameterList > pl) override
 
virtual Teuchos::RCP< const
SolutionHistory< Scalar > > 		getSolutionHistory () const override
 Get the SolutionHistory. More...
 
virtual Teuchos::RCP< const
TimeStepControl< Scalar > > 		getTimeStepControl () const override
 Get the TimeStepControl. More...
 
virtual Teuchos::RCP
< TimeStepControl< Scalar > > 		getNonConstTimeStepControl () override
 
virtual Teuchos::RCP
< Teuchos::Time > 		getIntegratorTimer () const override
 Returns the IntegratorTimer_ for this Integrator. More...
 
virtual Teuchos::RCP
< Teuchos::Time > 		getStepperTimer () const override
 
Overridden from Teuchos::ParameterListAcceptor
void setParameterList (const Teuchos::RCP< Teuchos::ParameterList > &pl) override
 
Teuchos::RCP
< Teuchos::ParameterList > 		getNonconstParameterList () override
 
Teuchos::RCP
< Teuchos::ParameterList > 		unsetParameterList () override
 
Teuchos::RCP< const
Teuchos::ParameterList > 		getValidParameters () const override
 
Overridden from Teuchos::Describable
std::string description () const override
 
void describe (Teuchos::FancyOStream &out, const Teuchos::EVerbosityLevel verbLevel) const override
 
Basic integrator methods

Protected Member Functions

Teuchos::RCP
< SensitivityModelEvaluatorBase
< Scalar > > 		createSensitivityModel (const Teuchos::RCP< Thyra::ModelEvaluator< Scalar > > &model, const Teuchos::RCP< Teuchos::ParameterList > &inputPL)
 
void buildSolutionHistory ()
 

Protected Attributes

Teuchos::RCP
< Thyra::ModelEvaluator
< Scalar > > 		model_
 
Teuchos::RCP
< SensitivityModelEvaluatorBase
< Scalar > > 		sens_model_
 
Teuchos::RCP< IntegratorBasic
< Scalar > > 		state_integrator_
 
Teuchos::RCP< IntegratorBasic
< Scalar > > 		sens_integrator_
 
Teuchos::RCP< SolutionHistory
< Scalar > > 		solutionHistory_
 
bool reuse_solver_
 
bool force_W_update_
 

Detailed Description

template<class Scalar>
class Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >

Time integrator suitable for pseudotransient forward sensitivity analysis.

For some problems, time integrators are used to compute steady-state solutions (also known as pseudo-transient solvers). When computing sensitivities, it is not necessary in these cases to propagate sensitivities all the way through the forward time integration. Instead the steady-state is first computed as usual, and then the sensitivities are computed using a similar pseudo-transient time integration applied to the sensitivity equations with the state frozen to the computed steady-state. This integrator specializes the transient sensitivity methods implemented by Tempus::IntegratorForwardSensitivity to this case.

Consider an implicit ODE f(x_dot,x,p) = 0 with a stable steady-state solution x = x^s, x_dot = 0 where f(0,x^s,p) = 0 and all of the eigenvalues of df/dx(0,x^s,p) are in the right half-plane (for an explicit ODE, the eigenvalues must be in the left half-plane). In the pseudo-transient method a time-integrator is applied to f(x_dot,x,p) = 0 until x_dot is sufficiently small. Now consider the forward sensitivity equations: df/dx_dot*z_dot + df/dx*z + df/dp = 0 where z = dx/dp. For pseudo-transient forward sensitivities, the above is integrated from z(0) = 0 until z_dot is sufficiently small, in which case z^s = -(df/dx)^{-1}*(df/dp). Then the final sensitivity of g is dg/dp + dg/dx*z^s. One can see that z^s is the only steady-state solution of the sensitivity equations, since df/dx and df/dp are constant, and must be linearly stable since it has the same Jacobian matrix as the forward equations.

Definition at line 49 of file Tempus_IntegratorPseudoTransientForwardSensitivity_decl.hpp.

Constructor & Destructor Documentation

template<class Scalar >
Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::IntegratorPseudoTransientForwardSensitivity ( Teuchos::RCP< Teuchos::ParameterList >  pList,
const Teuchos::RCP< Thyra::ModelEvaluator< Scalar > > &  model 
)

Constructor with ParameterList and model, and will be fully initialized.

In addition to all of the regular integrator options, the supplied parameter list supports the following options contained within a sublist "Sensitivities" from the top-level parameter list:

  • "Reuse State Linear Solver" (default: false) Whether to reuse the model's W matrix, solver, and preconditioner when solving the sensitivity equations. If they can be reused, substantial savings in compute time are possible.
  • "Force W Update" (default: false) When reusing the solver as above whether to force recomputation of W. This can be necessary when the solver overwrites it during the solve-phase (e.g., by a factorization).
  • "Use DfDp as Tangent" (default: false) Reinterpret the df/dp out-arg as the tangent vector (df/dx)(x,p) * dx/dp + df/dp(x,p) as described in the Tempus::CombinedForwardSensitivityModelEvaluator documentation.
  • "Sensitivity Parameter Index" (default: 0) Model evaluator parameter index for which sensitivities will be computed.
  • "Sensitivity X Tangent Index" (default: 1) If "Use DfDp as Tangent" is true, the model evaluator parameter index for passing dx/dp as a Thyra::DefaultMultiVectorProductVector.
  • "Sensitivity X-Dot Tangent Index" (default: 2) If "Use DfDp as Tangent" is true, the model evaluator parameter index for passing dx_dot/dp as a Thyra::DefaultMultiVectorProductVector.
  • "Sensitivity X-Dot-Dot Tangent Index" (default: 3) If "Use DfDp as Tangent" is true, the model evaluator parameter index for passing dx_dot_dot/dp as a Thyra::DefaultMultiVectorProductVector (if the model supports x_dot_dot).

Definition at line 22 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::IntegratorPseudoTransientForwardSensitivity ( const Teuchos::RCP< Thyra::ModelEvaluator< Scalar > > &  model,
std::string  stepperType 
)

Constructor with model and "Stepper Type" and is fully initialized with default settings.

Definition at line 35 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::IntegratorPseudoTransientForwardSensitivity ( )

Destructor.

Constructor that requires a subsequent setParameterList, setStepper, and initialize calls.

Definition at line 49 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
virtual Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::~IntegratorPseudoTransientForwardSensitivity ( )
inlinevirtual

Destructor.

Definition at line 102 of file Tempus_IntegratorPseudoTransientForwardSensitivity_decl.hpp.

Member Function Documentation

template<class Scalar >
bool Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::advanceTime ( )
virtual

Advance the solution to timeMax, and return true if successful.

Definition at line 60 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
bool Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::advanceTime ( const Scalar  timeFinal)
overridevirtual

Advance the solution to timeFinal, and return true if successful.

Implements Tempus::Integrator< Scalar >.

Definition at line 89 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
void Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::buildSolutionHistory ( )
protected

Definition at line 425 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
Teuchos::RCP< SensitivityModelEvaluatorBase< Scalar > > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::createSensitivityModel ( const Teuchos::RCP< Thyra::ModelEvaluator< Scalar > > &  model,
const Teuchos::RCP< Teuchos::ParameterList > &  inputPL 
)
protected

Definition at line 405 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
void Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::describe ( Teuchos::FancyOStream &  out,
const Teuchos::EVerbosityLevel  verbLevel 
) const
override

Definition at line 344 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
std::string Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::description ( ) const
override

Definition at line 335 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
Teuchos::RCP< const Thyra::MultiVectorBase< Scalar > > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::getDxdotdotDp ( ) const
virtual

Definition at line 319 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
Teuchos::RCP< const Thyra::MultiVectorBase< Scalar > > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::getDxdotDp ( ) const
virtual

Definition at line 289 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
Teuchos::RCP< const Thyra::MultiVectorBase< Scalar > > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::getDxDp ( ) const
virtual

Definition at line 259 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
int Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::getIndex ( ) const
overridevirtual

Get current index.

Implements Tempus::Integrator< Scalar >.

Definition at line 126 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
virtual Teuchos::RCP<Teuchos::Time> Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::getIntegratorTimer ( ) const
inlineoverridevirtual

Returns the IntegratorTimer_ for this Integrator.

Implements Tempus::Integrator< Scalar >.

Definition at line 127 of file Tempus_IntegratorPseudoTransientForwardSensitivity_decl.hpp.

template<class Scalar >
Teuchos::RCP< Teuchos::ParameterList > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::getNonconstParameterList ( )
override

Definition at line 397 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
Teuchos::RCP< TimeStepControl< Scalar > > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::getNonConstTimeStepControl ( )
overridevirtual

Implements Tempus::Integrator< Scalar >.

Definition at line 189 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
Teuchos::RCP< const SolutionHistory< Scalar > > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::getSolutionHistory ( ) const
overridevirtual

Get the SolutionHistory.

Implements Tempus::Integrator< Scalar >.

Definition at line 173 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
Status Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::getStatus ( ) const
overridevirtual

Get Status.

Implements Tempus::Integrator< Scalar >.

Definition at line 134 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
Teuchos::RCP< Stepper< Scalar > > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::getStepper ( ) const
overridevirtual

Get the Stepper.

Implements Tempus::Integrator< Scalar >.

Definition at line 148 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
virtual Teuchos::RCP<Teuchos::Time> Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::getStepperTimer ( ) const
inlineoverridevirtual

Implements Tempus::Integrator< Scalar >.

Definition at line 129 of file Tempus_IntegratorPseudoTransientForwardSensitivity_decl.hpp.

template<class Scalar >
Teuchos::RCP< Teuchos::ParameterList > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::getTempusParameterList ( )
overridevirtual

Return a copy of the Tempus ParameterList.

Implements Tempus::Integrator< Scalar >.

Definition at line 156 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
Scalar Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::getTime ( ) const
overridevirtual

Get current time.

Implements Tempus::Integrator< Scalar >.

Definition at line 118 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
Teuchos::RCP< const TimeStepControl< Scalar > > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::getTimeStepControl ( ) const
overridevirtual

Get the TimeStepControl.

Implements Tempus::Integrator< Scalar >.

Definition at line 181 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
Teuchos::RCP< const Teuchos::ParameterList > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::getValidParameters ( ) const
override

Definition at line 378 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
Teuchos::RCP< const Thyra::VectorBase< Scalar > > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::getX ( ) const
virtual

Get current the solution, x.

Definition at line 245 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
Teuchos::RCP< const Thyra::VectorBase< Scalar > > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::getXdot ( ) const
virtual

Get current the time derivative of the solution, xdot.

Definition at line 275 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
Teuchos::RCP< const Thyra::VectorBase< Scalar > > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::getXdotdot ( ) const
virtual

Get current the second time derivative of the solution, xdotdot.

Definition at line 305 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
void Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::initializeSolutionHistory ( Scalar  t0,
Teuchos::RCP< const Thyra::VectorBase< Scalar > >  x0,
Teuchos::RCP< const Thyra::VectorBase< Scalar > >  xdot0 = Teuchos::null,
Teuchos::RCP< const Thyra::VectorBase< Scalar > >  xdotdot0 = Teuchos::null,
Teuchos::RCP< const Thyra::MultiVectorBase< Scalar > >  DxDp0 = Teuchos::null,
Teuchos::RCP< const Thyra::MultiVectorBase< Scalar > >  DxdotDp0 = Teuchos::null,
Teuchos::RCP< const Thyra::MultiVectorBase< Scalar > >  DxdotdotDp0 = Teuchos::null 
)
virtual

Set the initial state from Thyra::VectorBase(s)

Definition at line 196 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
void Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::setParameterList ( const Teuchos::RCP< Teuchos::ParameterList > &  pl)
override

Definition at line 356 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
void Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::setTempusParameterList ( Teuchos::RCP< Teuchos::ParameterList >  pl)
overridevirtual

Implements Tempus::Integrator< Scalar >.

Definition at line 164 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

template<class Scalar >
Teuchos::RCP< Teuchos::ParameterList > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::unsetParameterList ( )
override

Definition at line 369 of file Tempus_IntegratorPseudoTransientForwardSensitivity_impl.hpp.

Member Data Documentation

template<class Scalar >
bool Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::force_W_update_
protected

Definition at line 188 of file Tempus_IntegratorPseudoTransientForwardSensitivity_decl.hpp.

template<class Scalar >
Teuchos::RCP<Thyra::ModelEvaluator<Scalar> > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::model_
protected

Definition at line 182 of file Tempus_IntegratorPseudoTransientForwardSensitivity_decl.hpp.

template<class Scalar >
bool Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::reuse_solver_
protected

Definition at line 187 of file Tempus_IntegratorPseudoTransientForwardSensitivity_decl.hpp.

template<class Scalar >
Teuchos::RCP<IntegratorBasic<Scalar> > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::sens_integrator_
protected

Definition at line 185 of file Tempus_IntegratorPseudoTransientForwardSensitivity_decl.hpp.

template<class Scalar >
Teuchos::RCP<SensitivityModelEvaluatorBase<Scalar> > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::sens_model_
protected

Definition at line 183 of file Tempus_IntegratorPseudoTransientForwardSensitivity_decl.hpp.

template<class Scalar >
Teuchos::RCP<SolutionHistory<Scalar> > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::solutionHistory_
protected

Definition at line 186 of file Tempus_IntegratorPseudoTransientForwardSensitivity_decl.hpp.

template<class Scalar >
Teuchos::RCP<IntegratorBasic<Scalar> > Tempus::IntegratorPseudoTransientForwardSensitivity< Scalar >::state_integrator_
protected

Definition at line 184 of file Tempus_IntegratorPseudoTransientForwardSensitivity_decl.hpp.

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