-MPI_Group smpi_group_new(int size);
-MPI_Group smpi_group_copy(MPI_Group origin);
-void smpi_group_destroy(MPI_Group group);
-void smpi_group_set_mapping(MPI_Group group, int index, int rank);
-int smpi_group_index(MPI_Group group, int rank);
-int smpi_group_rank(MPI_Group group, int index);
-int smpi_group_use(MPI_Group group);
-int smpi_group_unuse(MPI_Group group);
-int smpi_group_size(MPI_Group group);
-int smpi_group_compare(MPI_Group group1, MPI_Group group2);
-
-MPI_Topology smpi_comm_topo(MPI_Comm comm);
-MPI_Comm smpi_comm_new(MPI_Group group, MPI_Topology topo);
-void smpi_comm_destroy(MPI_Comm comm);
-MPI_Group smpi_comm_group(MPI_Comm comm);
-int smpi_comm_size(MPI_Comm comm);
-void smpi_comm_get_name(MPI_Comm comm, char* name, int* len);
-int smpi_comm_rank(MPI_Comm comm);
-MPI_Comm smpi_comm_split(MPI_Comm comm, int color, int key);
-void smpi_comm_use(MPI_Comm comm);
-void smpi_comm_unuse(MPI_Comm comm);
-
-MPI_Request smpi_mpi_send_init(void *buf, int count, MPI_Datatype datatype,
+XBT_PRIVATE MPI_Group smpi_group_new(int size);
+XBT_PRIVATE MPI_Group smpi_group_copy(MPI_Group origin);
+XBT_PRIVATE void smpi_group_destroy(MPI_Group group);
+XBT_PRIVATE void smpi_group_set_mapping(MPI_Group group, int index, int rank);
+XBT_PRIVATE int smpi_group_index(MPI_Group group, int rank);
+XBT_PRIVATE int smpi_group_rank(MPI_Group group, int index);
+XBT_PRIVATE int smpi_group_use(MPI_Group group);
+XBT_PRIVATE int smpi_group_unuse(MPI_Group group);
+XBT_PRIVATE int smpi_group_size(MPI_Group group);
+XBT_PRIVATE int smpi_group_compare(MPI_Group group1, MPI_Group group2);
+XBT_PRIVATE int smpi_group_incl(MPI_Group group, int n, int* ranks, MPI_Group* newgroup);
+
+
+XBT_PRIVATE MPI_Topology smpi_comm_topo(MPI_Comm comm);
+XBT_PRIVATE MPI_Comm smpi_comm_new(MPI_Group group, MPI_Topology topo);
+XBT_PRIVATE void smpi_comm_destroy(MPI_Comm comm);
+XBT_PRIVATE MPI_Group smpi_comm_group(MPI_Comm comm);
+XBT_PRIVATE int smpi_comm_size(MPI_Comm comm);
+XBT_PRIVATE void smpi_comm_get_name(MPI_Comm comm, char* name, int* len);
+XBT_PRIVATE int smpi_comm_rank(MPI_Comm comm);
+XBT_PRIVATE MPI_Comm smpi_comm_split(MPI_Comm comm, int color, int key);
+XBT_PRIVATE int smpi_comm_dup(MPI_Comm comm, MPI_Comm* newcomm);
+XBT_PRIVATE void smpi_comm_use(MPI_Comm comm);
+XBT_PRIVATE void smpi_comm_unuse(MPI_Comm comm);
+XBT_PRIVATE void smpi_comm_set_leaders_comm(MPI_Comm comm, MPI_Comm leaders);
+XBT_PRIVATE void smpi_comm_set_intra_comm(MPI_Comm comm, MPI_Comm leaders);
+XBT_PRIVATE int* smpi_comm_get_non_uniform_map(MPI_Comm comm);
+XBT_PRIVATE int* smpi_comm_get_leaders_map(MPI_Comm comm);
+XBT_PRIVATE MPI_Comm smpi_comm_get_leaders_comm(MPI_Comm comm);
+XBT_PRIVATE MPI_Comm smpi_comm_get_intra_comm(MPI_Comm comm);
+XBT_PRIVATE int smpi_comm_is_uniform(MPI_Comm comm);
+XBT_PRIVATE int smpi_comm_is_blocked(MPI_Comm comm);
+XBT_PRIVATE void smpi_comm_init_smp(MPI_Comm comm);
+
+XBT_PRIVATE int smpi_comm_c2f(MPI_Comm comm);
+XBT_PRIVATE MPI_Comm smpi_comm_f2c(int comm);
+XBT_PRIVATE int smpi_group_c2f(MPI_Group group);
+XBT_PRIVATE MPI_Group smpi_group_f2c(int group);
+XBT_PRIVATE int smpi_request_c2f(MPI_Request req);
+XBT_PRIVATE MPI_Request smpi_request_f2c(int req);
+XBT_PRIVATE int smpi_type_c2f(MPI_Datatype datatype);
+XBT_PRIVATE MPI_Datatype smpi_type_f2c(int datatype);
+XBT_PRIVATE int smpi_op_c2f(MPI_Op op);
+XBT_PRIVATE MPI_Op smpi_op_f2c(int op);
+XBT_PRIVATE int smpi_win_c2f(MPI_Win win);
+XBT_PRIVATE MPI_Win smpi_win_f2c(int win);
+XBT_PRIVATE int smpi_info_c2f(MPI_Info info);
+XBT_PRIVATE MPI_Info smpi_info_f2c(int info);
+
+XBT_PRIVATE MPI_Request smpi_mpi_send_init(void *buf, int count, MPI_Datatype datatype,