[MPI3-IO] Topics for discussion for the I/O working group slot

Rob Latham robl at mcs.anl.gov
Tue Feb 26 08:21:04 CST 2013

On Mon, Feb 25, 2013 at 05:26:28PM -0600, Mohamad Chaarawi wrote:
> Hi Dries,
> On 2/25/2013 3:44 PM, Dries Kimpe wrote:
> >- Fix shared file pointer access cfr. the EuroMPI paper?
> yes thanks for reminding me :-)
> >- independent file view changes
> Do you think, implementation wise, that it would be straightforward
> to just remove this restriction? I'm worried how that would effect
> shared file pointer operations in the standard.
> I'm all for having a new routine to change the file view
> independently with restrictions on what comes after that.

Yes, please.  MPI_File_set_view_not_dumb would be a fine name.

Or one could introduce a crapton of routines that take a file view in
addition to a memory datatype and obviate the need for setting file
view at all (well except for data representation but who actually does


Rob Latham
Mathematics and Computer Science Division
Argonne National Lab, IL USA

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