MPI-2 I/O operations

MPI_File_open( comm, filename, amode, info, OUT file )

MPI_File_set_view(file, disp, etype, filetype, datarep, info )

MPI_Read_...

MPI_Write_...

one of three positioning modes (explicit, shared pointer, individual pointers)

Blocking or non-blocking

Collective or non-collective