Instantiate MPI in case the build is parallel

nonlinelast.cc

@@ -45,6 +45,7 @@ using namespace Dune;
 
 int main (int argc, char *argv[]) try
 {
+    Dune::MPIHelper::instance(argc, argv);
     // Some types that I need
     typedef BCRSMatrix<FieldMatrix<double, dim, dim> > MatrixType;
     typedef BlockVector<FieldVector<double, dim> >     VectorType;

src/linear-elasticity.cc

@@ -45,6 +45,7 @@ using namespace Dune;
 
 int main (int argc, char *argv[]) try
 {
+    Dune::MPIHelper::instance(argc, argv);
     // Some types that I need
     typedef BCRSMatrix<FieldMatrix<double, dim, dim> > OperatorType;
     typedef BlockVector<FieldVector<double, dim> >     VectorType;

test/adolcmaterialtest.cc

@@ -36,6 +36,8 @@ const int dim = 3;
 using namespace Dune;
 int main (int argc, char *argv[]) try
 {
+    Dune::MPIHelper::instance(argc, argv);
+
     using FVector = FieldVector<double, dim>;
 
     //    Create the grid

test/materialtest.cc

@@ -159,6 +159,8 @@ using namespace Dune;
 
 int main(int argc, char* argv[]) try {
 
+  Dune::MPIHelper::instance(argc, argv);
+
   // parse eps
   double eps = 1e-6;
   if (argc == 2) eps = atof(argv[1]);