Teko_LU2x2DiagonalStrategy.hpp

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//      Teko: A package for block and physics based preconditioning
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#ifndef __Teko_LU2x2DiagonalStrategy_hpp__
#define __Teko_LU2x2DiagonalStrategy_hpp__
 
#include "Teko_LU2x2Strategy.hpp"
 
// Teuchos includes
#include "Teuchos_Time.hpp"
 
namespace Teko {

class LU2x2DiagonalStrategy : public LU2x2Strategy {
public:
   LU2x2DiagonalStrategy();

   LU2x2DiagonalStrategy(const Teuchos::RCP<InverseFactory> & invFA,
                         const Teuchos::RCP<InverseFactory> & invS);

   virtual ~LU2x2DiagonalStrategy() {}

   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);
 
protected:
   static void buildTimers();

   void initializeState(const Teko::BlockedLinearOp & A,BlockPreconditionerState & state) const;
 
   // how to invert the matrices
   Teuchos::RCP<InverseFactory> invFactoryA00_; // for \tilde{A_00}\f$
   Teuchos::RCP<InverseFactory> invFactoryS_;
 
   DiagonalType a00InverseType_;
 
   static Teuchos::RCP<Teuchos::Time> initTimer_;
   static Teuchos::RCP<Teuchos::Time> invSTimer_;
   static Teuchos::RCP<Teuchos::Time> invA00Timer_;
   static Teuchos::RCP<Teuchos::Time> opsTimer_;
};
 
} // end namespace Teko
 
#endif