Added possibility to set tolerance for linear solvers.

opm/core/linalg/LinearSolverFactory.cpp

@@ -93,6 +93,15 @@ namespace Opm
         return solver_->solve(size, nonzeros, ia, ja, sa, rhs, solution);
     }
 
+    void LinearSolverFactory::setTolerance(const double tol) 
+    {
+        solver_->setTolerance(tol);
+    }
+
+    double LinearSolverFactory::getTolerance() const
+    {
+        return solver_->getTolerance();
+    }
 
 
 

opm/core/linalg/LinearSolverFactory.hpp

@@ -75,6 +75,17 @@ namespace Opm
                                          const double* sa,
                                          const double* rhs,
                                          double* solution) const;
+
+        /// Set tolerance for the linear solver.
+        /// \param[in] tol         tolerance value
+        /// Not used for LinearSolverFactory
+        virtual void setTolerance(const double tol);
+
+        /// Get tolerance for the linear solver.
+        /// \param[out] tolerance value
+        /// Not used for LinearSolverFactory. Returns -1.
+        virtual double getTolerance() const;
+
     private:
         std::tr1::shared_ptr<LinearSolverInterface> solver_;
     };

opm/core/linalg/LinearSolverInterface.hpp

@@ -71,6 +71,14 @@ namespace Opm
                                          const double* rhs,
                                          double* solution) const = 0;
 
+        /// Set tolerance for the linear solver.
+        /// \param[in] tol         tolerance value
+        virtual void setTolerance(const double tol) = 0;
+
+        /// Get tolerance for the linear solver.
+        /// \param[out] tolerance value
+        virtual double getTolerance() const = 0;
+ 
     };
 
 

opm/core/linalg/LinearSolverIstl.cpp

@@ -172,6 +172,17 @@ namespace Opm
         return res;
     }
 
+    void LinearSolverIstl::setTolerance(const double tol)
+    {
+        linsolver_residual_tolerance_ = tol;
+    }
+
+    double LinearSolverIstl::getTolerance() const
+    {
+        return linsolver_residual_tolerance_;
+    }
+
+
 
     namespace
     {

opm/core/linalg/LinearSolverIstl.hpp

@@ -71,6 +71,15 @@ namespace Opm
                                          const double* sa,
                                          const double* rhs,
                                          double* solution) const;
+
+        /// Set tolerance for the residual in dune istl linear solver.
+        /// \param[in] tol         tolerance value
+        virtual void setTolerance(const double tol);
+
+        /// Get tolerance ofthe linear solver.
+        /// \param[out] tolerance value
+        virtual double getTolerance() const;
+
     private:
         double linsolver_residual_tolerance_;
         int linsolver_verbosity_;

opm/core/linalg/LinearSolverUmfpack.cpp

@@ -60,5 +60,15 @@ namespace Opm
         return rep;
     }
 
+    void LinearSolverUmfpack::setTolerance(const double /*tol*/)
+    {
+    }
+
+    double LinearSolverUmfpack::getTolerance() const
+    {
+        return -1.;
+    }
+
+
 } // namespace Opm
 

opm/core/linalg/LinearSolverUmfpack.hpp

@@ -56,6 +56,18 @@ namespace Opm
                                          const double* sa,
                                          const double* rhs,
                                          double* solution) const;
+
+        /// Set tolerance for the linear solver.
+        /// \param[in] tol         tolerance value
+        /// Not used for UMFPACK solver.
+        virtual void setTolerance(const double /*tol*/);
+
+        /// Get tolerance for the linear solver.
+        /// \param[out] tolerance value
+        /// Not used for UMFPACK solver. Returns -1.
+        virtual double getTolerance() const;
+
+
     };
 
 

opm/core/pressure/IncompTpfa.cpp

@@ -45,7 +45,7 @@ namespace Opm
     IncompTpfa::IncompTpfa(const UnstructuredGrid& g,
 			   const double* permeability,
 			   const double* gravity,
-                           const LinearSolverInterface& linsolver,
+                           LinearSolverInterface& linsolver,
                            const struct Wells* wells)
 	: grid_(g),
           linsolver_(linsolver),
@@ -294,6 +294,16 @@ namespace Opm
 
     }
 
+    void IncompTpfa::setTolerance(const double tol)
+    {
+        linsolver_.setTolerance(tol);
+    }
+
+    double IncompTpfa::getTolerance() const {
+        return linsolver_.getTolerance();
+    }
+
+
     void IncompTpfa::computeFaceFlux(const std::vector<double>& totmob,
 				     const std::vector<double>& omega,
 				     const std::vector<double>& src,

opm/core/pressure/IncompTpfa.hpp

@@ -56,7 +56,7 @@ namespace Opm
 	IncompTpfa(const UnstructuredGrid& g,
 		   const double* permeability,
 		   const double* gravity,
-                   const LinearSolverInterface& linsolver,
+                   LinearSolverInterface& linsolver,
                    const struct Wells* wells = 0);
 
 	/// Destructor.
@@ -155,9 +155,18 @@ namespace Opm
         /// Expose read-only reference to internal half-transmissibility.
         const ::std::vector<double>& getHalfTrans() const { return htrans_; }
 
+        /// Set tolerance for the linear solver.
+        /// \param[in] tol         tolerance value
+        void setTolerance(const double tol);
+
+        /// Get tolerance of the linear solver.
+        /// \param[out] tolerance value
+        double getTolerance() const;
+
+
     private:
 	const UnstructuredGrid& grid_;
-        const LinearSolverInterface& linsolver_;
+        LinearSolverInterface& linsolver_;
 	::std::vector<double> htrans_;
 	::std::vector<double> trans_ ;
 	::std::vector<double> gpress_;