TODO

Last updated: 2009/01/14

(*) Builders that are needed to create a forward sensitivity
integrator with general responses and sensitivities:

- [Todd] Given a PL and and optional Thyra::NonlinearSolver, return a
Rythmos::StepperBase. Depends only on Rythmos and Thyra.  Belongs in
Rythmos.
+ Need to create Rythmos::StepperBuilder
+ Done 1/19/09

- [Ross] Given a PL, return a Thyra::NonlinearSolver for f(x)=0.  Depends
NOX, MOOCHO, Rythmos (or Thyra).
+ Need to create Thyra::NonlinearSolverBuilderBase interface
+ Need to create Thyra::DefaultNonlinearSolverBuilder subclass (empty
except for ...)

- [Ross] Given a "basic" Thyra::ModelEvaluator and a PL, return a
(multiply) decorated Thyra::ModelEvalutor.  Depends only on Thyra.
Belongs in Thyra.

- [Ross & Todd] Given a Thyra::ModelEvalutor and a PL, return an
aggregate Rythmos::TransientObservedModel.  Belongs in Rythmos.

- Given a Rythmos::TransientObservedModel and a PL, and:

a) Return a new Rythmos::IntegratorBase for the forward problem, or

b) Return a Thyra::ModelEvaluator for the reduced response/observation
problem g_hat(p) with or without sensitivities.

c) ??

- Given a EpetraExt::ModelEvalator object and an PL (and an embedded
Thyra::LinearSolverBuilderBase object), return a "basic" Thrya
ModelEvaluator ... May not be needed ...