(j3.2006) (SC22WG5.3677) [ukfortran] N1755: Request for new features from MPI Forum
Thu Nov 13 04:27:55 EST 2008
On Nov 13 2008, Malcolm Cohen wrote:
>can argue as to whether it usually is or not).
>> If you call an external I/O routine, like MPI, and it works
>> asynchronously, there is no difference with Fortran ASYNCHRONOUS I/O
>Well ... yes and no. The optimisation implications are in fact somewhat
>different (and I'm not sure whether MPI-2's design is consistent with
I think that we need to discuss that! I was thinking of to MPI-1
non-blocking transfers, which are.
When writing my MPI course, I looked at a range of MPI applications
(PARPACK, CASINO, CETEP/CASTEP/ONETEP, CPMD, FFTW, SPOOLES, ScaLAPACK,
CFX-11 and FLUENT), and the only ones that used MPI-2 one-sided calls
were the last two. I didn't have the source, so can't tell you how they
used them. Six of those used MPI-1 non-blocking calls.
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