[MPICH] Non-contiguous Write on NFS

[Heshan Lin]

Hi,

To my understanding, ROMIO uses data sieving to improve performance of
independent non-contiguous data access. Will it work correctly for writing
on NFS? My tests show that if multiple MPI processes concurrently perform
independent non-contiguous write to a file on NFS, part of the written data
would be missing and there is some garble content in the file. Am I missing
something? Thanks for your help.

Heshan