[mpich-discuss] underlying POSIX calls for MPI_File_read_all and MPI_File_write_all

[shankha]

Hi,
Will it be correct to assume that all the ROMIO read write calls
internally call POSIX read , write in some way or the other.
I could figure out that MPI_File_write_all calls write by trapping
MPI_File_write_all. But couldn't figure out the underlying posix call
for MPI_File_read_all.

Thanks
Shankha