"Schlottke-Lakemper, Michael" <m.schlottke-lakem...@aia.rwth-aachen.de> writes:
> Hi folks, > > We are currently encountering a weird file coherence issue when > running parallel jobs with OpenMPI (1.8.7) and writing files in > parallel to an NFS-mounted file system using Parallel netCDF 1.6.1 > (which internally uses MPI-I/O). Sometimes (~30-40% of our samples) we > get a file whose contents are not consistent across different hosts. That's probably not a good idea. Have you read about NFS in the romio README? It's old, but as far as I know, it's still relevant for NFS3. Maybe Rob Latham will see this and be able to comment on NFS4. It seems to me that building for NFS by default is a mistake.
