Re: [MPIWG Fortran] What is BIND(C)?
Could you give some background/details on the "new" meaning ASYNCHRONOUS? I thought Intel ifort had support? Thanks, -Dan On Wed, Feb 05, 2014 at 07:19:16PM +0000, Jeff Squyres (jsquyres) wrote:
Not AFAIK. But we use the pragmas for ignore TKR.
I guess I could have been more clear: OMPI will build the mpi_f08 module if it finds "enough" F08 characteristics supported in the Fortran compiler, but it may strip away some features if the compiler doesn't support them. For example, with current ifort, you'll basically get everything except the "new" meaning of asynchronous and descriptors (we'll use ignore TKR pragmas instead) -- so the SUBARRAYS value will be .false.
The new gfortran functionality will be in the upcoming gcc/gfortran v4.9 (which isn't released yet).
On Feb 5, 2014, at 1:26 PM, Craig Rasmussen <[email protected]> wrote:
I don't think Intel does yet (but actually I will check). Intel supports the IGNORE_TKR and so Jeff is using the Intel compiler with compiler directives to support MPI-3.
Surprisingly, the latest gfortran supports type(*) and dimension(..) partially, as in it will act like IGNORE_TKR (I think) but actually doesn't pass the new C descriptors yet.
Craig Rasmussen CAS Scientific Programmer [email protected]
On Feb 5, 2014, at 10:11 AM, Bill Long wrote:
On Feb 5, 2014, at 12:02 PM, Jeff Squyres (jsquyres) <[email protected]> wrote:
...but be careful. We didn't get rid of *all* the BIND(C)'s.
If you care, the most recent OMPI 1.7 and SVN trunk nightly tarballs have the most correct/most-bug-fixed implementation of the mpi_f08 module available (soon to be released as OMPI 1.7.4). You'll need to build with a non-gfortran compiler to get the mpi_f08 module built (e.g., the Intel fortran compiler).
Really? Intel supports type(*) and dimension(..) now?
Cheers, Bill
On Feb 5, 2014, at 12:46 PM, Rolf Rabenseifner <[email protected]> wrote:
Hello,
The BIND(C) was removed in the latest errata, see http://www.mpi-forum.org/docs/docs.html and http://www.mpi-forum.org/docs/mpi-3.0/errata-30.pdf page 1 lines 21-27
Best regards Rolf Rabenseifner
----- Original Message -----
From: "Junchao Zhang" <[email protected]> To: [email protected] Sent: Wednesday, February 5, 2014 6:42:28 PM Subject: [MPIWG Fortran] What is BIND(C)?
Hello, I have a naive question. MPI3 has Fortran binding in forms like this:
MPI_Send(buf, count, datatype, dest, tag, comm, ierror) BIND(C) TYPE(*), DIMENSION(..), INTENT(IN) :: buf INTEGER, INTENT(IN) :: count, dest, tag ...
So how to interpret BIND(C) here? Is it to say this interface is interoperable with C? But I find the interface arguments are not interoperable, e.g., INTEGER, instead of C_INT. Thank you.
--Junchao Zhang _______________________________________________ mpiwg-fortran mailing list [email protected] http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-fortran
-- Dr. Rolf Rabenseifner . . . . . . . . . .. email [email protected] 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: Room 1.307) _______________________________________________ mpiwg-fortran mailing list [email protected] http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-fortran
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Dan Pou