[MPIWG Fortran] Type of MPI_Status

[Jeff Squyres (jsquyres)]

Done.  Good catch:

    https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/415

This is a trivial ticket, but if you could make sure it's ok, I'll send it to the mpi-forum list so that it can get added to the next meeting's agenda.


On Mar 13, 2014, at 1:51 AM, Rolf Rabenseifner <rabenseifner at hlrs.de> wrote:

> Jeff and Junchao,
> 
> it is a missing word INTEGER in this part of the sentence
> 
> In whole MPI these three values are in Fortran INTEGER and nothing else
> 
> Junchao, thank you for the hint that an erratum is neede
>         to prevent from such misinterpretation
> 
> Jeff, please can you file the errata ticket resulting in
> 
>    ... containing three public INTEGER fields named ...
> 
> Best regards
> Rolf
> 
> 
> ----- Original Message -----
>> From: "Junchao Zhang" <jczhang at mcs.anl.gov>
>> To: "MPI-WG Fortran working group" <mpiwg-fortran at lists.mpi-forum.org>
>> Sent: Thursday, March 13, 2014 4:49:49 AM
>> Subject: [MPIWG Fortran] Type of MPI_Status
>> 
>> 
>> 
>> 
>> Hello,
>> 
>> 
>> p30 of MPI3 says "In Fortran with USE mpi or INCLUDE ’mpif.h’, status
>> is an array of INTEGERs of size MPI_STATUS_SIZE. ..., With Fortran
>> USE mpi_f08, status is defined as the Fortran BIND(C) derived type
>> TYPE(MPI_Status) containing three public fields named MPI_SOURCE ,
>> MPI_TAG , and MPI_ERROR"
>> 
>> In other words, it does't say type of the three public fields must be
>> INTEGER. So, in mpi_f08, can I declare MPI_Status as
>> 
>> 
>> TYPE, BIND(C) :: MPI_Status
>> INTEGER(C_INT) :: MPI_SOURCE, MPI_TAG, MPI_ERROR
>> ... ! other fields
>> END TYPE MPI_Status
>> 
>> 
>> I find it makes MPI_Status binding easier. Since this type is
>> interoperable with C, I do not need to allocate temp variables to do
>> type conversion when INTEGER is not a C_INT.
>> 
>> 
>> 
>> --Junchao Zhang
>> _______________________________________________
>> mpiwg-fortran mailing list
>> mpiwg-fortran at lists.mpi-forum.org
>> http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-fortran
> 
> -- 
> 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
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-- 
Jeff Squyres
jsquyres at cisco.com
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