[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
that?)

==rob

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



More information about the mpiwg-io mailing list