pdevs/mpi: add display in dint function

src/tests/mpi/cluster/models.hpp

@@ -165,6 +165,9 @@ public:
 
     void dint(typename common::DoubleTime::type t)
     {
+
+      std::cout << get_name() << " at " << t << ": dint" << std::endl;
+      
         mark_full(t);
         if (full_N()) {
             raz();