Sheet 7 - 1

Sheet_7/bsp_7_2/main.cpp

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+//		MPI code in C++.
+//		See [Gropp/Lusk/Skjellum, "Using MPI", p.33/41 etc.]
+//		and  /opt/mpich/include/mpi2c++/comm.h  for details
+
+#include "greetings.h"
+#include <iostream>                               // MPI
+#include <mpi.h>
+using namespace std;
+
+int main(int argc, char *argv[])
+{
+    MPI_Comm icomm = MPI_COMM_WORLD;
+    MPI_Init(&argc, &argv);	// E2
+    
+    int myrank, numprocs;
+    MPI_Comm_rank(icomm, &myrank);       // my MPI-rank, process-ID
+    MPI_Comm_size(icomm, &numprocs);	// number of all processes
+
+	// cout << "\n Process nr. " << myrank << " says, there are " << numprocs << " processes running.\n \n"; //
+
+	// E3
+    if (0==myrank) {
+        cout << "\n Process nr. " << myrank << " says, there are " << numprocs << " processes running.\n \n";
+    }
+
+    //greetings(icomm);
+    greetings_cpp(icomm);  // E4
+
+
+    MPI_Finalize();	// E2
+
+    return 0;
+}
+
+