[MPI3 Fortran] Nonblocking MPI and Fortran temporary memory modifications

[Rolf Rabenseifner]

Dear all,

Reinhold showed me that the ASYNCHRONOUS attribute may not help
because a compiler may implement asynchronous Fortran I/O
with blocking I/O and therefore may ignore all ASYNCHRONOUS 
attributes.

Please have a look at  
https://svn.mpi-forum.org/trac/mpi-forum-web/attachment/ticket/229/mpi-report-F2008-2011-03-26-changeonly-majorpages.pdf

Pages 24-31 in the pdf (pages 549-556 in the original document)
show our knowledge about the nonblocking and datatype (MPI_BOTTOM) problems
in the combination of Fortran and MPI.

Unfortunately in the taböle on page 550, we have to modify all entries
about ASYNCHRONOUS into "NOT solved".

Do you see further solutions?

Do you see further problems with nonblocking and "MPI_BOTTOM", 
that are not mentioned in this section and that should be.

Is the rest of this section correct?
If something is incorrect, it would be important to understand why.

I've reworked this section based on many discussions and on my best 
knowledge - but I'm not sure whether this was enough.

Best regards
Rolf


-- 
Dr. Rolf Rabenseifner . . . . . . . . . .. email rabenseifner at hlrs.de
High Performance Computing Center (HLRS) . phone ++49(0)711/685-65530
University of Stuttgart . . . . . . . . .. fax ++49(0)711 / 685-65832
Head of Dpmt Parallel Computing . . . www.hlrs.de/people/rabenseifner
Nobelstr. 19, D-70550 Stuttgart, Germany . (Office: Allmandring 30)