add MPI

src/dg.cc

@@ -46,6 +46,8 @@ int main(int argc, char** argv)
     using Problem = DGProblem<Coordinate>;
     using DG = DG<GridView, Mapper, Problem>;
 
+    Dune::MPIHelper::instance(argc, argv);
+
     //get parameters from file "parameterDG.ini"
     Dune::ParameterTree pt;
     Dune::ParameterTreeParser::readINITree("parameterDG.ini", pt);

src/mmdg.cc

@@ -50,6 +50,8 @@ int main(int argc, char** argv)
     using Problem = CoupledDGProblem<Coordinate>;
     using MMDG = MMDG<GridView, Mapper, IGridView, IMapper, Problem>;
 
+    Dune::MPIHelper::instance(argc, argv);
+
     //get parameters from file "parameterDG.ini"
     Dune::ParameterTree pt;
     Dune::ParameterTreeParser::readINITree("parameterMMDG.ini", pt);