+MPI_CALL(XBT_PUBLIC(int), MPI_File_read,(MPI_File fh, void * buf, int count,
+ MPI_Datatype datatype, MPI_Status *status));
+MPI_CALL(XBT_PUBLIC(int), MPI_File_write,(MPI_File fh, const void * buf, int count,
+ MPI_Datatype datatype, MPI_Status *status));