Dear developers of MPICH,
For your convenience, I forward the emails in mvapich-discuss concerning the missing Fortran bindings.
Possibly this I can encourage you a bit, adding (as OPENMPI did it successfully) the missing explicit Ftn-interfaces in the mpi-module
for those MPI-routines with parameters of "Choice"-type?
At least: You may add the explicit Ftn-interface for the sbr MPI_FINALIZE . It is missing in MPICH-3.0.4 too.
Greetings
Michael Rachner
-----Ursprüngliche Nachricht-----
Von: mvapich-discuss [mailto:mvapich-discuss-bounces@cse.ohio-state.edu] Im Auftrag von Michael.Rachner@dlr.de
Gesendet: Freitag, 12. Dezember 2014 12:38
An: mvapich-discuss@cse.ohio-state.edu
Betreff: [mvapich-discuss] WG: WG: missing Fortran bindings in MVAPICH2-2.1a
Sorry, I wanted to send my email not to Jonathan alone, but to the mvapich-discuss.
Michael
-----Ursprüngliche Nachricht-----
Von: Rachner, Michael
Gesendet: Freitag, 12. Dezember 2014 10:03
An: 'Jonathan Perkins'
Betreff: AW: [mvapich-discuss] WG: missing Fortran bindings in MVAPICH2-2.1a
Thank You, Jonathan, for this hint.
Indeed, the problem with the missing explicit Ftn-interfaces in the mpi-module are the arguments of "choice"-type. Fortran 95 don't like them.
So the MPI-3.0 Standard document contains a complicated chapter 17.1 with these things.
As a consequence, MPICH seems to have chosen the slim way omitting in the mpi-module ("use mpi") the explicit Ftn-interfaces for MPI-routines with choice-type arguments, whereas OPENMPI has chosen the cumbercome way providing the explicit Ftn-interfaces even for these MPI-routines. They succeeded.
For details: In November there were some emails discussing this issue in the OPENMPI-forum.
Greetings
Michael Rachner
-----Ursprüngliche Nachricht-----
Von: Jonathan Perkins [mailto:perkinjo@cse.ohio-state.edu]
Gesendet: Donnerstag, 11. Dezember 2014 16:17
An: Rachner, Michael
Cc: mvapich-discuss@cse.ohio-state.edu
Betreff: Re: [mvapich-discuss] WG: missing Fortran bindings in MVAPICH2-2.1a
Hello Michael. My investigation turned up the same issue in MPICH-3.1.3. MVAPICH2-2.1a is based on MPICH-3.1.2 so it inherits the same behavior.
Here is a snippet from MPICH's user guide:
4.2 Special Issues for Fortran
MPICH provides two kinds of support for Fortran programs. For
Fortran 77 programmers, the file mpif.h provides the definitions of
the MPI constants such as MPI COMM WORLD. Fortran 90 programmers
should use the MPI module instead; this provides all of the
definitions as well as interface definitions for many of the MPI
functions. However, this MPI module does not provide full Fortran 90
support; in particular, interfaces for the routines, such as MPI
Send, that take “choice” arguments are not provided.
It sounds like these are routines with ``choice'' arguments.
On Thu, Dec 11, 2014 at 01:29:03PM +0000, Michael.Rachner@dlr.de wrote:
> Dear developers,
>
> I have just found, that exactly the same 11 missing Ftn-interfaces are also missing in MPICH-3.0.4, MSMPI-5.0, IMPI-5.0.0 .
> So that looks, as if you all have inherited these missing interfaces from MPICH.
>
> In contrast, with OPENMPI-1.8.2 all explicit Ftn-interfaces for MPI-routines needed by our CFD-code are present. Compliment!
>
> Greetings
> Michael Rachner
>
>
> Von: mvapich-discuss
> [mailto:mvapich-discuss-bounces@cse.ohio-state.edu] Im Auftrag von
> Michael.Rachner@dlr.de
> Gesendet: Donnerstag, 11. Dezember 2014 13:12
> An: mvapich-discuss@cse.ohio-state.edu
> Betreff: [mvapich-discuss] missing Fortran bindings in MVAPICH2-2.1a
>
> Dear developers of MVAPICH2,
>
> I found, that the explicit interfaces in the mpi-module are still missing in MVAPICH2-2.1a (with INTEL-14.0.4) for these 11 MPI-routines:
> MPI_BCAST
> MPI_GATHER , MPI_GATHERV
> MPI_REDUCE , MPI_ALLREDUCE
> MPI_SCATTER, MPI_SCATTERV
> MPI_SSEND , MPI_RECV
> MPI_WIN_ALLOCATE_SHARED, MPI_WIN_SHARED_QUERY
>
> Greetings
> Michael Rachner
>
> _______________________________________________
> mvapich-discuss mailing list
> mvapich-discuss@cse.ohio-state.edu
> http://mailman.cse.ohio-state.edu/mailman/listinfo/mvapich-discuss
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