[MPICH] Non-contiguous Write on NFS

[Rajeev Thakur]

It should work correctly if fcntl file locks on NFS are working correctly. 

Rajeev  

> -----Original Message-----
> From: owner-mpich-discuss at mcs.anl.gov 
> [mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of Heshan Lin
> Sent: Friday, April 06, 2007 2:04 AM
> To: mpich-discuss at mcs.anl.gov
> Subject: [MPICH] Non-contiguous Write on NFS
> 
> 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 
> 
>