remove comm from solver

CMakeLists.txt

@@ -23,7 +23,7 @@ add_subdirectory("src")
 add_subdirectory("test")
 
 target_link_libraries(amdis fmt)
-target_compile_options(amdis PUBLIC "-Wfatal-errors" "-Wall" "-Wpedantic")
+target_compile_options(amdis PUBLIC "-Wall" "-Wpedantic")
 
 option(ENABLE_ALL_WARNINGS "enable all meaningful warnings" OFF)
 if (ENABLE_ALL_WARNINGS)

examples/navier_stokes.cc

@@ -12,6 +12,7 @@ struct NavierStokesBasis
   using Grid = Dune::YaspGrid<GRIDDIM>;
   using GlobalBasis = typename TaylorHoodBasis<Grid>::GlobalBasis;
   using CoefficientType = double;
+  using LinAlgTraits = BackendTraits<GlobalBasis>;
 };
 
 int main(int argc, char** argv)

src/amdis/BiLinearForm.hpp

@@ -21,7 +21,7 @@ namespace AMDiS
    * \tparam CB  Basis of matrix columns
    * \tparam T   Coefficient type to store in the matrix
    **/
-  template <class RB, class CB, class T = double, class Traits = BackendTraits<RB,T>>
+  template <class RB, class CB, class T = double, class Traits = BackendTraits<RB>>
   class BiLinearForm
       : public MatrixFacade<T, Traits::template MatrixImpl>
       , private ObserverSequence<event::adapt,2>
@@ -39,7 +39,7 @@ namespace AMDiS
     using ColLocalView = typename ColBasis::LocalView;
 
     /// The type of the elements of the DOFVector
-    using CoefficientType = typename Traits::CoefficientType;
+    using CoefficientType = T;
 
     /// The type of the matrix filled on an element with local contributions
     using ElementMatrix = FlatMatrix<CoefficientType>;

src/amdis/DOFVector.hpp

@@ -35,7 +35,7 @@ namespace AMDiS
    * \tparam T   Type of the coefficients
    * \tparam TraitsType  Collection of parameter for the linear-algebra backend
    **/
-  template <class GB, class T = double, class TraitsType = BackendTraits<GB,T>>
+  template <class GB, class T = double, class TraitsType = BackendTraits<GB>>
   class DOFVector
       : public VectorFacade<T, TraitsType::template VectorImpl>
       , private Observer<event::preAdapt>

src/amdis/LinearAlgebra.hpp

@@ -28,7 +28,7 @@
 #else // ISTL
 
 #include <amdis/linearalgebra/istl/Constraints.hpp>
-#include <amdis/linearalgebra/istl/ISTLRunner.hpp>
+#include <amdis/linearalgebra/istl/ISTLSolver.hpp>
 #include <amdis/linearalgebra/istl/PreconCreator.hpp>
 #include <amdis/linearalgebra/istl/SolverCreator.hpp>
 #include <amdis/linearalgebra/istl/Traits.hpp>

src/amdis/LinearForm.hpp

@@ -19,7 +19,7 @@ namespace AMDiS
    * \tparam T   Coefficient type to store in the vector
    * \tparam Traits  Collection of parameter for the linear-algebra backend
    **/
-  template <class GB, class T = double, class Traits = BackendTraits<GB,T>>
+  template <class GB, class T = double, class Traits = BackendTraits<GB>>
   class LinearForm
       : public VectorFacade<T, Traits::template VectorImpl>
   {
@@ -32,7 +32,7 @@ namespace AMDiS
     using LocalView = typename GlobalBasis::LocalView;
 
     /// The type of the elements of the DOFVector
-    using CoefficientType = typename Traits::CoefficientType;
+    using CoefficientType = T;
 
     /// The type of the vector filled on an element with local contributions
     using ElementVector = FlatVector<CoefficientType>;

src/amdis/ProblemInstat.hpp

@@ -25,7 +25,7 @@ namespace AMDiS
     using Self        = ProblemInstat;
     using ProblemType = ProblemStat<Traits>;
 
-    using CoefficientVector = typename ProblemType::CoefficientVector;
+    using SolutionVector = typename ProblemType::SolutionVector;
 
   public:
     /// Constructs a ProblemInstat with prob as its stationary problem, stored as reference.
@@ -54,7 +54,7 @@ namespace AMDiS
     ProblemType const& problemStat() const { return *problemStat_; }
 
     /// Returns const-ref of \ref oldSolution.
-    std::shared_ptr<CoefficientVector const> oldSolutionVector() const
+    std::shared_ptr<SolutionVector const> oldSolutionVector() const
     {
       test_exit_dbg(bool(oldSolution_),
         "OldSolution need to be created. Call initialize with INIT_UH_OLD.");
@@ -82,7 +82,7 @@ namespace AMDiS
     ProblemType* problemStat_;
 
     /// Solution of the last timestep.
-    std::shared_ptr<CoefficientVector> oldSolution_;
+    std::shared_ptr<SolutionVector> oldSolution_;
   };
 
 

src/amdis/ProblemInstat.inc.hpp

@@ -43,7 +43,7 @@ void ProblemInstat<Traits>::createUhOld()
   if (oldSolution_)
     warning("oldSolution already created\n");
   else // create oldSolution
-    oldSolution_.reset(new CoefficientVector(*problemStat_->solutionVector()));
+    oldSolution_.reset(new SolutionVector(*problemStat_->solutionVector()));
 }
 
 

src/amdis/ProblemStat.hpp

@@ -76,13 +76,17 @@ namespace AMDiS
     /// Dimension of the world
     static constexpr int dow = Grid::dimensionworld;
 
-    using LinearSolverTraits = BackendTraits<GlobalBasis, typename Traits::CoefficientType>;
-    using LinearSolverType = LinearSolverInterface<LinearSolverTraits>;
-    using CommunicationType = typename LinearSolverTraits::Comm;
+  private:
+    using LinAlgTraits = typename Traits::LinAlgTraits;
+    using Mat = typename LinAlgTraits::template MatrixImpl<typename Traits::CoefficientType>;
+    using Vec = typename LinAlgTraits::template VectorImpl<typename Traits::CoefficientType>;
+    using PartitionSet = typename LinAlgTraits::PartitionSet;
 
-    using SystemMatrix = BiLinearForm<GlobalBasis, GlobalBasis, typename Traits::CoefficientType>;
-    using SystemVector = LinearForm<GlobalBasis, typename Traits::CoefficientType>;
-    using CoefficientVector = DOFVector<GlobalBasis, typename Traits::CoefficientType>;
+  public:
+    using LinearSolver = LinearSolverInterface<Mat,Vec>;
+    using SystemMatrix = BiLinearForm<GlobalBasis, GlobalBasis, typename Traits::CoefficientType, LinAlgTraits>;
+    using SystemVector = LinearForm<GlobalBasis, typename Traits::CoefficientType, LinAlgTraits>;
+    using SolutionVector = DOFVector<GlobalBasis, typename Traits::CoefficientType, LinAlgTraits>;
 
   public:
     /**
@@ -334,16 +338,16 @@ namespace AMDiS
     std::shared_ptr<GlobalBasis const> globalBasis() const { return globalBasis_; }
 
     /// Return a reference to the linear solver, \ref linearSolver
-    std::shared_ptr<LinearSolverType>       solver()       { return linearSolver_; }
-    std::shared_ptr<LinearSolverType const> solver() const { return linearSolver_; }
+    std::shared_ptr<LinearSolver>       solver()       { return linearSolver_; }
+    std::shared_ptr<LinearSolver const> solver() const { return linearSolver_; }
 
     /// Returns a reference to system-matrix, \ref systemMatrix_
     std::shared_ptr<SystemMatrix>       systemMatrix()       { return systemMatrix_; }
     std::shared_ptr<SystemMatrix const> systemMatrix() const { return systemMatrix_; }
 
     /// Returns a reference to the solution vector, \ref solution_
-    std::shared_ptr<CoefficientVector>       solutionVector()       { return solution_; }
-    std::shared_ptr<CoefficientVector const> solutionVector() const { return solution_; }
+    std::shared_ptr<SolutionVector>       solutionVector()       { return solution_; }
+    std::shared_ptr<SolutionVector const> solutionVector() const { return solution_; }
 
     /// Return a reference to the rhs system-vector, \ref rhs
     std::shared_ptr<SystemVector>       rhsVector()       { return rhs_; }
@@ -485,13 +489,13 @@ namespace AMDiS
 //    std::vector<Estimator*> estimator;
 
     /// An object of the linearSolver Interface
-    std::shared_ptr<LinearSolverType> linearSolver_;
+    std::shared_ptr<LinearSolver> linearSolver_;
 
     /// Matrix that is filled during assembling
     std::shared_ptr<SystemMatrix> systemMatrix_;
 
     /// Vector with the solution components
-    std::shared_ptr<CoefficientVector> solution_;
+    std::shared_ptr<SolutionVector> solution_;
 
     /// Vector (load-vector) corresponding to the right-hand side
     /// of the equation, filled during assembling

src/amdis/ProblemStat.inc.hpp

@@ -240,7 +240,7 @@ template <class Traits>
 void ProblemStat<Traits>::createMatricesAndVectors()
 {
   systemMatrix_ = std::make_shared<SystemMatrix>(globalBasis_, globalBasis_);
-  solution_ = std::make_shared<CoefficientVector>(globalBasis_);
+  solution_ = std::make_shared<SolutionVector>(globalBasis_);
   rhs_ = std::make_shared<SystemVector>(globalBasis_);
 
   auto localView = globalBasis_->localView();
@@ -261,7 +261,7 @@ void ProblemStat<Traits>::createSolver()
   Parameters::get(name_ + "->solver", solverName);
 
   auto solverCreator
-    = named(CreatorMap<LinearSolverType>::getCreator(solverName, name_ + "->solver"));
+    = named(CreatorMap<LinearSolver>::getCreator(solverName, name_ + "->solver"));
 
   linearSolver_ = solverCreator->createWithString(name_ + "->solver");
 }
@@ -291,7 +291,7 @@ void ProblemStat<Traits>::createMarker()
 template <class Traits>
 void ProblemStat<Traits>::createFileWriter()
 {
-  FileWriterCreator<CoefficientVector> creator(solution_, boundaryManager_);
+  FileWriterCreator<SolutionVector> creator(solution_, boundaryManager_);
 
   filewriter_.clear();
   auto localView = globalBasis_->localView();
@@ -382,8 +382,7 @@ solve(AdaptInfo& adaptInfo, bool createMatrixData, bool storeMatrixData)
   solverInfo.setStoreMatrixData(storeMatrixData);
 
   solution_->resize();
-  linearSolver_->solve(systemMatrix_->impl().matrix(), solution_->impl().vector(),
-                       rhs_->impl().vector(), globalBasis_->communicator(), solverInfo);
+  linearSolver_->solve(*systemMatrix_, *solution_, *rhs_, solverInfo);
 
   if (solverInfo.info() > 0) {
     msg("solution of discrete system needed {} seconds", t.elapsed());
@@ -525,7 +524,7 @@ buildAfterAdapt(AdaptInfo& /*adaptInfo*/, Flag /*flag*/, bool asmMatrix, bool as
     msg("{} local DOFs", rhs_->localSize());
 
   // 2. traverse grid and assemble operators on the elements
-  for (auto const& element : elements(gridView(), typename LinearSolverTraits::PartitionSet{})) {
+  for (auto const& element : elements(gridView(), PartitionSet{})) {
     localView.bind(element);
 
     if (asmMatrix)

src/amdis/ProblemStatTraits.hpp

@@ -59,16 +59,20 @@ namespace AMDiS
 
   } // end namespace Impl
 
-  /// An Exemplar for ProblemStatTraits
-  template <class GlobalBasisType, class T = double>
+
+  /// Wrapper around a global basis providing default traits
+  template <class GB, class T = double,
+            template <class> class TraitsImpl = BackendTraits>
   struct DefaultProblemTraits
   {
-    using GlobalBasis = GlobalBasisType;
+    using GlobalBasis = GB;
     using CoefficientType = T;
+    using LinAlgTraits = TraitsImpl<GB>;
   };
 
-
-  template <class HostGrid, class PreBasisCreator, class T = double>
+  /// Generator for a basis and default problem traits
+  template <class HostGrid, class PreBasisCreator, class T = double,
+            template <class> class TraitsImpl = BackendTraits>
   struct DefaultBasisCreator
   {
     using Grid = AdaptiveGrid_t<HostGrid>;
@@ -84,10 +88,12 @@ namespace AMDiS
       return makeGlobalBasis(gridView, PreBasisCreator::create());
     }
 
-    using GlobalBasis = Underlying_t<decltype(create(std::declval<GridView>()))>;
+    using GlobalBasis = decltype(create(std::declval<GridView>()));
     using CoefficientType = T;
+    using LinAlgTraits = TraitsImpl<GlobalBasis>;
   };
 
+
   /// \brief ProblemStatTraits for a (composite) basis composed of
   /// lagrange bases of different degree.
   template <class Grid, int... degrees>

src/amdis/linearalgebra/CMakeLists.txt

@@ -8,13 +8,12 @@ install(FILES
     LinearSolverInterface.hpp
     MatrixFacade.hpp
     ParallelIndexSet.hpp
-    PreconditionerInterface.hpp
     RunnerInterface.hpp
     SolverInfo.hpp
     SparsityPattern.hpp
     SymmetryStructure.hpp
     Traits.hpp
-    VectorDefaultImplementation.hpp
+    VectorBase.hpp
     VectorFacade.hpp
 DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/amdis/linearalgebra)
 

src/amdis/linearalgebra/LinearSolver.hpp

@@ -21,16 +21,12 @@ namespace AMDiS
    * solvers where the backend provides an interface, can be assigned
    * by different Runner objects.
    **/
-  template <class Traits, class Runner>
+  template <class Mat, class Vec, class Runner>
   class LinearSolver
-      : public LinearSolverInterface<Traits>
+      : public LinearSolverInterface<Mat,Vec>
   {
     using Self = LinearSolver;
-    using Super = LinearSolverInterface<Traits>;
-
-    using Mat = typename Traits::Mat;
-    using Vec = typename Traits::Vec;
-    using Comm = typename Traits::Comm;
+    using Super = LinearSolverInterface<Mat,Vec>;
 
   public:
     /// A creator to be used instead of the constructor.
@@ -49,23 +45,25 @@ namespace AMDiS
       : runner_(prefix, FWD(args)...)
     {}
 
-    Runner&       runner()       { return runner_; }
-    Runner const& runner() const { return runner_; }
+    Runner* runner() override
+    {
+      return &runner_;
+    }
 
-  private:
-    /// Implements \ref LinearSolverInterface::solveSystemImpl()
-    void solveImpl(Mat const& A, Vec& x, Vec const& b, Comm const& comm, SolverInfo& solverInfo) override
+  protected:
+    /// Implements \ref LinearSolverInterface::solveImpl()
+    void solveImpl(Mat const& A, Vec& x, Vec const& b, SolverInfo& solverInfo) override
     {
       Dune::Timer t;
       if (solverInfo.doCreateMatrixData()) {
         // init matrix or wrap block-matrix or ...
-        runner_.init(A, comm);
+        runner_.init(A.matrix());
       }
 
       if (solverInfo.info() > 0)
         msg("prepare solver needed {} seconds", t.elapsed());
 
-      int error = runner_.solve(A, x, b, solverInfo);
+      int error = runner_.solve(A.matrix(), x.vector(), b.vector(), solverInfo);
       solverInfo.setError(error);
 
       if (!solverInfo.doStoreMatrixData())
@@ -73,7 +71,7 @@ namespace AMDiS
     }
 
   private:
-    /// redirect the implementation to a runner. Implementing a \ref RunnerInterface
+    /// redirect the implementation to a runner implementing a \ref RunnerInterface
     Runner runner_;
   };
 

src/amdis/linearalgebra/LinearSolverInterface.hpp

 #pragma once
 
-/** \file LinearSolverInterface.h */
+#include <amdis/Output.hpp>
+#include <amdis/linearalgebra/RunnerInterface.hpp>
 
 /**
  * \defgroup Solver Solver module
@@ -15,15 +16,16 @@ namespace AMDiS
 {
   class SolverInfo;
 
+  template <class T, template <class> class MatrixImpl>
+  class MatrixFacade;
+
+  template <class T, template <class> class VectorImpl>
+  class VectorFacade;
+
   /// Abstract base class for linear solvers
-  template <class Traits>
+  template <class Mat, class Vec>
   class LinearSolverInterface
   {
-  protected:
-    using Mat = typename Traits::Mat;
-    using Vec = typename Traits::Vec;
-    using Comm = typename Traits::Comm;
-
   public:
     /// Destructor.
     virtual ~LinearSolverInterface() = default;
@@ -38,14 +40,21 @@ namespace AMDiS
      *  \p x     A [block-]vector for the unknown components.
      *  \p b     A [block-]vector for the right-hand side of the linear system.
      **/
-    void solve(Mat const& A, Vec& x, Vec const& b, Comm const& comm, SolverInfo& solverInfo)
+    template <class TA, class TX, class TY, template <class> class MI, template <class> class VI>
+    void solve(MatrixFacade<TA,MI> const& A, VectorFacade<TX,VI>& x, VectorFacade<TY,VI> const& b, SolverInfo& solverInfo)
     {
-      solveImpl(A, x, b, comm, solverInfo);
+      solveImpl(A.impl(), x.impl(), b.impl(), solverInfo);
     }
 
-  private:
+    virtual RunnerInterface<Mat,Vec>* runner()
+    {
+      error_exit("Must be implemented by derived class.");
+      return nullptr;
+    }
+
+  protected:
     /// main methods that all solvers must implement
-    virtual void solveImpl(Mat const& A, Vec& x, Vec const& b, Comm const& comm, SolverInfo& solverInfo) = 0;
+    virtual void solveImpl(Mat const& A, Vec& x, Vec const& b, SolverInfo& solverInfo) = 0;
   };
 
 } // end namespace AMDiS

src/amdis/linearalgebra/RunnerInterface.hpp

@@ -7,29 +7,28 @@ namespace AMDiS
   class SolverInfo;
 
   /// Interface for Runner / Worker types used in solver classes
-  template <class Traits>
+  template <class Mat, class Vec>
   class RunnerInterface
   {
-  protected:
-    using Mat = typename Traits::Mat;
-    using Vec = typename Traits::Vec;
-    using Comm = typename Traits::Comm;
+    using M = typename Mat::BaseMatrix;
+    using X = typename Vec::BaseVector;
+    using Y = typename Vec::BaseVector;
 
   public:
     /// virtual destructor
     virtual ~RunnerInterface() = default;
 
     /// Is called at the beginning of a solution procedure
-    virtual void init(Mat const& A, Comm const& comm) = 0;
+    virtual void init(M const& A) = 0;
 
     /// Is called at the end of a solution procedure
     virtual void exit() = 0;
 
     /// Solve the system A*x = b
-    virtual int solve(Mat const& A, Vec& x, Vec const& b, SolverInfo& solverInfo) = 0;
+    virtual int solve(M const& A, X& x, Y const& b, SolverInfo& solverInfo) = 0;
 
-    /// Solve the adjoint system A^T*x = b
-    virtual int adjointSolve(Mat const& A, Vec& x, Vec const& b, SolverInfo& solverInfo)
+    /// Solve the system A*x = b
+    virtual int adjointSolve(M const& A, X& x, Y const& b, SolverInfo& solverInfo)
     {
       error_exit("Must be implemented by derived class.");
       return 0;

src/amdis/linearalgebra/Traits.hpp

@@ -22,17 +22,17 @@ namespace AMDiS
    *  required to provide the typedefs listed here.
    *
    *  \tparam Basis  A global basis from dune-functions
-   *  \tparam T      The type of the coefficients stored in the matrix and vector
    */
-  template <class Basis, class T = double>
+  template <class Basis>
   class BackendTraits
   {
   public:
-    using Mat = implementation_defined;   //< The backend matrix type
-    using Vec = implementation_defined;   //< The backend vector type
-    using Comm = implementation_defined;  //< The communication type
+    template <class T>
+    using MatrixImpl = implementation_defined;   //< The backend matrix type
+
+    template <class T>
+    using VectorImpl = implementation_defined;   //< The backend vector type
 
-    using CoefficientType = T;                   //< The type of the matrix/vector entries
     using SparsityPattern = implementation_defined; //< The SparsityPattern for the matrix type
     using PartitionSet = Dune::Partitions::All;  //< The dune partition set where to assemble operators
   };

src/amdis/linearalgebra/eigen/DirectRunner.hpp

@@ -14,16 +14,16 @@ namespace AMDiS
   * \class AMDiS::DirectRunner
   * \brief \implements RunnerInterface for the (external) direct solvers
   */
-  template <template <class> class Solver, class Traits>
+  template <class Mat, class Vec, template <class> class Solver>
   class DirectRunner
-      : public RunnerInterface<Traits>
+      : public RunnerInterface<Mat,Vec>
   {
+    using M = typename Mat::BaseMatrix;
+    using X = typename Vec::BaseVector;
+    using Y = typename Vec::BaseVector;
+
   protected:
-    using Super = RunnerInterface<Traits>;
-    using Mat = typename Traits::Mat;
-    using Vec = typename Traits::Vec;
-    using Comm = typename Traits::Comm;
-    using EigenSolver = Solver<Mat>;
+    using EigenSolver = Solver<M>;
 
   public:
     /// Constructor.
@@ -35,10 +35,8 @@ namespace AMDiS
     }
 
     /// Implements \ref RunnerInterface::init()
-    void init(Mat const& A, Comm const& comm) override
+    void init(M const& A) override
     {
-      DUNE_UNUSED_PARAMETER(comm);
-
       if (!reusePattern_ || !initialized_) {
         solver_.analyzePattern(A);
         initialized_ = true;
@@ -56,13 +54,11 @@ namespace AMDiS
     }
 
     /// Implements \ref RunnerInterface::solve()
-    int solve(Mat const& A, Vec& x, Vec const& b, SolverInfo& solverInfo) override
+    int solve(M const& A, X& x, Y const& b, SolverInfo& solverInfo)
     {
-      DUNE_UNUSED_PARAMETER(A);
-
       x = solver_.solve(b);
 
-      auto r = Vec(b);
+      Y r = b;
       if (x.norm() != 0)
         r -= A * x;
 

src/amdis/linearalgebra/eigen/IterativeRunner.hpp

@@ -9,15 +9,16 @@
 
 namespace AMDiS
 {
-  template <class IterativeSolver, class Traits>
+  template <class Mat, class Vec, class IterativeSolver>
   class IterativeRunner
-      : public RunnerInterface<Traits>
+      : public RunnerInterface<Mat,Vec>
   {
+    using M = typename Mat::BaseMatrix;
+    using X = typename Vec::BaseVector;
+    using Y = typename Vec::BaseVector;
+
     using SolverCfg = SolverConfig<IterativeSolver>;
     using PreconCfg = PreconConfig<typename IterativeSolver::Preconditioner>;
-    using Mat = typename Traits::Mat;
-    using Vec = typename Traits::Vec;
-    using Comm = typename Traits::Comm;
 
   public:
     IterativeRunner(std::string const& prefix)
@@ -28,12 +29,9 @@ namespace AMDiS
       Parameters::get(prefix + "->reuse pattern", reusePattern_);
     }
 
-
     /// Implements \ref RunnerInterface::init()
-    void init(Mat const& A, Comm const& comm) override
+    void init(M const& A) override
     {
-      DUNE_UNUSED_PARAMETER(comm);
-
       if (!reusePattern_ || !initialized_) {
         solver_.analyzePattern(A);
         initialized_ = true;
@@ -51,14 +49,12 @@ namespace AMDiS
     }
 
     /// Implements \ref RunnerInterface::solve()
-    int solve(Mat const& A, Vec& x, Vec const& b, SolverInfo& solverInfo) override
+    int solve(M const& A, X& x, Y const& b, SolverInfo& solverInfo) override
     {
-      DUNE_UNUSED_PARAMETER(A);
-
       solver_.setTolerance(solverInfo.relTolerance());
       x = solver_.solveWithGuess(b, x);
 
-      auto r = Vec(b);
+      Y r = b;
       if (x.norm() != 0)
         r -= A * x;
 

src/amdis/linearalgebra/eigen/SolverCreator.hpp

@@ -20,18 +20,17 @@
 
 namespace AMDiS
 {
-  template <class Traits, template <class> class IterativeSolver>
+  template <class Mat, class Vec, template <class> class IterativeSolver>
   struct IterativeSolverCreator
-      : public CreatorInterfaceName<LinearSolverInterface<Traits>>
+      : public CreatorInterfaceName<LinearSolverInterface<Mat,Vec>>
   {
     template <class Precon>
     using SolverCreator
-      = typename LinearSolver<Traits,
-          IterativeRunner<IterativeSolver<Precon>, Traits>>::Creator;
+      = typename LinearSolver<Mat,Vec, IterativeRunner<Mat, Vec, IterativeSolver<Precon>>>::Creator;
 
-    using SolverBase = LinearSolverInterface<Traits>;
-    using Mat = typename Traits::Mat;
-    using Scalar = typename Mat::Scalar;
+    using SolverBase = LinearSolverInterface<Mat,Vec>;
+    using M = typename Mat::BaseMatrix;
+    using Scalar = typename M::Scalar;