[mpich-discuss] Problems with MPI Romio code

[shankha]

Hi,
Your slides mention that MPI_Barrier should still be used along with
MPI_Atomicity. Atomicty only ensures that other processes are not 
performing the same operation but it does not ensure that there cannot 
be another operation on the same file.

e.g.
MPI_open
MPI_set_atomic
MPI_File_write
-------------------->   MPI_Barrier
MPI_File_read


Am I correct in my assumption and reasoning ?


Thanks
Shankha