replaced SeqILU0 with SeqILU in ISTL backend

src/amdis/linear_algebra/istl/ISTL_Preconditioner.hpp

@@ -39,6 +39,7 @@ namespace AMDiS
     ISTLPrecon(std::string const& prefix)
     {
       Parameters::get(prefix + "->relaxation", w_);
+      Parameters::get(prefix + "->iterations", iter_);
     }
 
     using PreconBase = Dune::Preconditioner<VectorX, VectorB>;
@@ -51,13 +52,13 @@ namespace AMDiS
     template <class P>
     std::unique_ptr<P> createImpl(Matrix const& A, Type<P>) const
     {
-      return std::make_unique<P>(A, 1, w_);
+      return std::make_unique<P>(A, iter_, w_);
     }
 
-    std::unique_ptr<Dune::SeqILU0<Matrix, VectorX, VectorB>>
-    createImpl(Matrix const& A, Type<Dune::SeqILU0<Matrix, VectorX, VectorB>>) const
+    std::unique_ptr<Dune::SeqILU<Matrix, VectorX, VectorB>>
+    createImpl(Matrix const& A, Type<Dune::SeqILU<Matrix, VectorX, VectorB>>) const
     {
-      return std::make_unique<Dune::SeqILU0<Matrix, VectorX, VectorB>>(A, w_);
+      return std::make_unique<Dune::SeqILU<Matrix, VectorX, VectorB>>(A, iter_, w_);
     }
 
     std::unique_ptr<Dune::Richardson<VectorX, VectorB>>
@@ -67,6 +68,7 @@ namespace AMDiS
     }
 
     double w_ = 1.0;
+    int iter_ = 0;
   };
 
 
@@ -105,7 +107,7 @@ namespace AMDiS
       auto ssor = new PreconCreator<Dune::SeqSSOR<Matrix, VectorX, VectorB>>;
       Map::addCreator("ssor", ssor);
 
-      auto ilu = new PreconCreator<Dune::SeqILU0<Matrix, VectorX, VectorB>>;
+      auto ilu = new PreconCreator<Dune::SeqILU<Matrix, VectorX, VectorB>>;
       Map::addCreator("ilu", ilu);
       Map::addCreator("ilu0", ilu);