CovariantStep.hpp

#ifndef DEF_VARIATIONAL_COVARIANTSTEP
#define DEF_VARIATIONAL_COVARIANTSTEP

#include <NOX.H>
#include <NOX_Common.H>
#include <NOX_Utils.H>
#include <Teuchos_StandardCatchMacros.hpp>

namespace Variational {

template <typename T_M,
          typename T_Q,
          typename T_ALGEBRA>
class CovariantStep : public Abstract::Step<T_M,
                                            T_Q,
                                            CovariantStepInternals<T_M,T_Q,T_ALGEBRA>,
                                            Abstract::LieProblem<T_M,T_Q,T_ALGEBRA>,
                                            T_ALGEBRA>
{
    using Internals = CovariantStepInternals<T_M,T_Q,T_ALGEBRA>;
    using Problem = Abstract::LieProblem<T_M,T_Q,T_ALGEBRA>;

private:
    Teuchos::RCP<Teuchos::ParameterList>            m_solverParametersPtr;
    Teuchos::RCP<NOX::StatusTest::Combo>            m_statusTests;
    Teuchos::RCP<NOXGroup<T_ALGEBRA,1>>             m_grp;
    Teuchos::RCP<NOX::Solver::Generic>              m_solver;

public:
    CovariantStep<T_M,T_Q,T_ALGEBRA> (Problem& problem)
    :   Abstract::Step<T_M,T_Q,Internals,Problem,T_ALGEBRA>(problem)
    {
        // NOX
        this->m_solverParametersPtr = Teuchos::rcp(new Teuchos::ParameterList);
        Teuchos::ParameterList& solverParameters = *m_solverParametersPtr;

        solverParameters.set("Nonlinear Solver","Line Search Based");
        Teuchos::ParameterList& lineSearchParameters = solverParameters.sublist("Line Search");
        lineSearchParameters.set("Method","Full Step");

        Teuchos::RCP<NOX::StatusTest::NormF> statusTestA = Teuchos::rcp(new NOX::StatusTest::NormF(1.0e-8,NOX::StatusTest::NormF::Unscaled));
        Teuchos::RCP<NOX::StatusTest::MaxIters> statusTestB = Teuchos::rcp(new NOX::StatusTest::MaxIters(200));
        this->m_statusTests = Teuchos::rcp(new NOX::StatusTest::Combo(NOX::StatusTest::Combo::OR,statusTestA,statusTestB));

        this->m_grp = Teuchos::rcp(new NOXGroup<T_ALGEBRA,1>(*(this->m_internals)));
        this->m_solver = NOX::Solver::buildSolver(this->m_grp,this->m_statusTests,this->m_solverParametersPtr);
    }

    ~CovariantStep<T_M,T_Q,T_ALGEBRA> ()
    { }

    void
    setData (T_M h_var, T_Q q0_var, T_Q q1_var)
    { this->m_internals->setData(h_var,q0_var,q1_var); }
    
    void
    initialize (void)
    { }

    const T_Q
    makeStep (void)
    {
        bool success = true;
        bool verbose = false;

        try {
            m_solver->reset(this->m_internals->getInitialGuess());
            NOX::StatusTest::StatusType status = m_solver->solve();
            const NOXGroup<T_ALGEBRA,1>& solnGrp = dynamic_cast<const NOXGroup<T_ALGEBRA,1>&>(m_solver->getSolutionGroup());
            const NOXVector<T_ALGEBRA::DOF>& solnVec = dynamic_cast<const NOXVector<T_ALGEBRA::DOF>&>(solnGrp.getX());

            if (status != NOX::StatusTest::Converged)
                success = false;

            T_Q solution = this->m_internals->q1()*(this->m_internals->h()*T_ALGEBRA(solnVec)).cay();

            return solution;
        } TEUCHOS_STANDARD_CATCH_STATEMENTS(verbose, std::cerr, success);
    }
};
} // namespace Variational

#endif