Updating serialize send

src/mpi/serialize.cpp

@@ -202,6 +202,7 @@ void serialization_unit_testing(AGGenInstance &instance, boost::mpi::communicato
             world.recv(mpi::any_source, 0, str_host);
             std::cout << str_host << std::endl;
         }
+        std::cout << "" << std::endl;
     }
     world.barrier();