Add simple MPI init/finalize and "hello world"-like test

src/utils/PastisUtils.cpp

@@ -11,9 +11,12 @@
 #include <ConsoleManager.hpp>
 
 #include <CLI/CLI.hpp>
+#include <mpi.h>
 
 std::string initialize(int& argc, char* argv[])
 {
+  MPI_Init(&argc, &argv);
+
   long unsigned number = 10;
   std::string filename;
 
@@ -98,5 +101,26 @@ std::string initialize(int& argc, char* argv[])
 
 void finalize()
 {
+  MPI_Barrier(MPI_COMM_WORLD);
+  const int mpi_rank
+      =[](){
+         int mpi_rank;
+         MPI_Comm_rank(MPI_COMM_WORLD, &mpi_rank);
+         return mpi_rank;
+       }();
+
+  const int mpi_size
+      =[](){
+         int mpi_size;
+         MPI_Comm_size(MPI_COMM_WORLD, &mpi_size);
+         return mpi_size;
+       }();
+
+  std::cout << rang::fgB::green << "Terminating process " << rang::fg::reset
+            << rang::fgB::yellow << mpi_rank << rang::fg::reset << " of "
+            << rang::style::bold << mpi_size << rang::style::reset << '\n';;
+
+
   Kokkos::finalize();
+  MPI_Finalize();
 }