MPI_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &size);
+ MPI_Comm_set_errhandler(MPI_COMM_WORLD, MPI_ERRORS_RETURN);
int* recv_counts = (int *) xbt_malloc(size * sizeof(int));
int* recv_disps = (int *) xbt_malloc(size * sizeof(int));