Fixing MPI_Init and MPI_Finalize position

src/VCluster.cpp

@@ -18,6 +18,7 @@ void init_global_v_cluster(int *argc, char ***argv)
 class init_glob_v_cluster
 {
 public:
+
 	~init_glob_v_cluster()
 	{
 		delete global_v_cluster;
@@ -26,5 +27,3 @@ public:
 
 // Deallocate at the end
 init_glob_v_cluster v_cls;
-
-bool global_mpi_initialization = false;

src/VCluster.hpp

@@ -58,9 +58,6 @@ class exec_exception: public std::exception
   }
 };
 
-// Flag that define the mpi initialization
-extern bool global_mpi_initialization;
-
 /*! \brief This class is virtualize the cluster as a set of processing unit
  *         and communication unit
  *
@@ -128,18 +125,11 @@ public:
 	// Finalize the MPI program
 	~Vcluster()
 	{
-		MPI_Finalize();
 	}
 
 	//! \brief Virtual cluster constructor
 	Vcluster(int *argc, char ***argv)
 	{
-		// Initialize MPI
-		if (global_mpi_initialization == false)
-		{
-			MPI_Init(argc,argv);
-			global_mpi_initialization = true;
-		}
 
 		//! Get the total number of process
 		//! and the rank of this process

src/main.cpp

 #include "config.h"
 #define BOOST_TEST_MODULE "C++ test module for OpenFPM_vcluster project"
 #include <boost/test/included/unit_test.hpp>
+#include "VCluster.hpp"
+
+struct MPIFixture {
+    MPIFixture() { MPI_Init(&boost::unit_test::framework::master_test_suite().argc,&boost::unit_test::framework::master_test_suite().argv);}
+    ~MPIFixture() { MPI_Finalize(); }
+};
+
+BOOST_GLOBAL_FIXTURE(MPIFixture);
 
 
 #include "VCluster_unit_tests.hpp"