xbt_cfg_register_string("smpi/os", "1:0:0:0:0", NULL, "Small messages timings (MPI_Send minimum time for small messages)");
xbt_cfg_register_string("smpi/ois", "1:0:0:0:0", NULL, "Small messages timings (MPI_Isend minimum time for small messages)");
xbt_cfg_register_string("smpi/or", "1:0:0:0:0", NULL, "Small messages timings (MPI_Recv minimum time for small messages)");
xbt_cfg_register_string("smpi/os", "1:0:0:0:0", NULL, "Small messages timings (MPI_Send minimum time for small messages)");
xbt_cfg_register_string("smpi/ois", "1:0:0:0:0", NULL, "Small messages timings (MPI_Isend minimum time for small messages)");
xbt_cfg_register_string("smpi/or", "1:0:0:0:0", NULL, "Small messages timings (MPI_Recv minimum time for small messages)");