On 17 June 2014 01:55, Dave Goodell (dgoodell) <[email protected]> wrote:
This OMPI bug may be of note to the MPICH community: https://svn.open-mpi.org/trac/ompi/ticket/4721
From a user point of view, I do not like that behaviour. I agree that the MPI implementation is free to allocate as much space it is convenient, but the size it reports back after a query is a different story. Does the MPI standard requires that the result query of the query is the exact allocated size? If not, I see more convenient to return the requested-at-allocation- time size the the allocated one. What's the use case of returning the exact allocated size? After all, I guess users cannot rely on "extra space" being available at the end of the buffer. -- Lisandro Dalcin --------------- CIMEC (UNL/CONICET) Predio CONICET-Santa Fe Colectora RN 168 Km 472, Paraje El Pozo 3000 Santa Fe, Argentina Tel: +54-342-4511594 (ext 1016) Tel/Fax: +54-342-4511169