Teko_PCDStrategy.hpp

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//      Teko: A package for block and physics based preconditioning
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#ifndef __Teko_PCDStrategy_hpp__
#define __Teko_PCDStrategy_hpp__

#include "Teko_LU2x2Strategy.hpp"

// Teuchos includes
#include "Teuchos_Time.hpp"

namespace Teko {
namespace NS {

class PCDStrategy : public LU2x2Strategy {
public:
   PCDStrategy();

   PCDStrategy(const Teuchos::RCP<InverseFactory> & invFA,
                         const Teuchos::RCP<InverseFactory> & invS);

   virtual ~PCDStrategy() {}

   virtual const Teko::LinearOp
   getHatInvA00(const Teko::BlockedLinearOp & A,BlockPreconditionerState & state) const;

   virtual const Teko::LinearOp
   getTildeInvA00(const Teko::BlockedLinearOp & A,BlockPreconditionerState & state) const;

   virtual const Teko::LinearOp
   getInvS(const Teko::BlockedLinearOp & A,BlockPreconditionerState & state) const;

   virtual void initializeFromParameterList(const Teuchos::ParameterList & settings,
                                            const InverseLibrary & invLib);

   virtual Teuchos::RCP<Teuchos::ParameterList> getRequestedParameters() const;

   virtual bool updateRequestedParameters(const Teuchos::ParameterList & pl);

protected:
   static void buildTimers();

   void initializeState(const Teko::BlockedLinearOp & A,BlockPreconditionerState & state) const;

   // how to invert the matrices
   Teuchos::RCP<InverseFactory> invFactoryF_; // for \tilde{A_00}\f$
   Teuchos::RCP<InverseFactory> invFactoryS_;

   DiagonalType massInverseType_;

   Teuchos::RCP<Teuchos::ParameterList> lapParams_; 

   Teuchos::RCP<Teuchos::ParameterList> pcdParams_; 

   bool schurCompOrdering_;

   static Teuchos::RCP<Teuchos::Time> initTimer_;
   static Teuchos::RCP<Teuchos::Time> invSTimer_;
   static Teuchos::RCP<Teuchos::Time> invFTimer_;
   static Teuchos::RCP<Teuchos::Time> opsTimer_;

public:
   // some static functions for determining strings

   static std::string getPCDString() { return "PCD Operator"; }
   static std::string getPressureLaplaceString() { return "Pressure Laplace Operator"; }
   static std::string getPressureMassString() { return "Pressure Mass Matrix"; }
};

} // end namespace NS
} // end namespace Teko

#endif