253444c6d0
1. New mpifort wrapper compiler: you can utilize mpif.h, use mpi, and use mpi_f08 through this one wrapper compiler
1. mpif77 and mpif90 still exist, but are sym links to mpifort and may be removed in a future release
1. The mpi module has been re-implemented and is significantly "mo' bettah"
1. The mpi_f08 module offers many, many improvements over mpif.h and the mpi module
This stuff is coming from a VERY long-lived mercurial branch (3 years!); it'll almost certainly take a few SVN commits and a bunch of testing before I get it correctly committed to the SVN trunk.
== More details ==
Craig Rasmussen and I have been working with the MPI-3 Fortran WG and Fortran J3 committees for a long, long time to make a prototype MPI-3 Fortran bindings implementation. We think we're at a stable enough state to bring this stuff back to the trunk, with the goal of including it in OMPI v1.7.
Special thanks go out to everyone who has been incredibly patient and helpful to us in this journey:
* Rolf Rabenseifner/HLRS (mastermind/genius behind the entire MPI-3 Fortran effort)
* The Fortran J3 committee
* Tobias Burnus/gfortran
* Tony !Goetz/Absoft
* Terry !Donte/Oracle
* ...and probably others whom I'm forgetting :-(
There's still opportunities for optimization in the mpi_f08 implementation, but by and large, it is as far along as it can be until Fortran compilers start implementing the new F08 dimension(..) syntax.
Note that gfortran is currently unsupported for the mpi_f08 module and the new mpi module. gfortran users will a) fall back to the same mpi module implementation that is in OMPI v1.5.x, and b) not get the new mpi_f08 module. The gfortran maintainers are actively working hard to add the necessary features to support both the new mpi_f08 module and the new mpi module implementations. This will take some time.
As mentioned above, ompi/mpi/f77 and ompi/mpi/f90 no longer exist. All the fortran bindings implementations have been collated under ompi/mpi/fortran; each implementation has its own subdirectory:
{{{
ompi/mpi/fortran/
base/ - glue code
mpif-h/ - what used to be ompi/mpi/f77
use-mpi-tkr/ - what used to be ompi/mpi/f90
use-mpi-ignore-tkr/ - new mpi module implementation
use-mpi-f08/ - new mpi_f08 module implementation
}}}
There's also a prototype 6-function-MPI implementation under use-mpi-f08-desc that emulates the new F08 dimension(..) syntax that isn't fully available in Fortran compilers yet. We did that to prove it to ourselves that it could be done once the compilers fully support it. This directory/implementation will likely eventually replace the use-mpi-f08 version.
Other things that were done:
* ompi_info grew a few new output fields to describe what level of Fortran support is included
* Existing Fortran examples in examples/ were renamed; new mpi_f08 examples were added
* The old Fortran MPI libraries were renamed:
* libmpi_f77 -> libmpi_mpifh
* libmpi_f90 -> libmpi_usempi
* The configury for Fortran was consolidated and significantly slimmed down. Note that the F77 env variable is now IGNORED for configure; you should only use FC. Example:
{{{
shell$ ./configure CC=icc CXX=icpc FC=ifort ...
}}}
All of this work was done in a Mercurial branch off the SVN trunk, and hosted at Bitbucket. This branch has got to be one of OMPI's longest-running branches. Its first commit was Tue Apr 07 23:01:46 2009 -0400 -- it's over 3 years old! :-) We think we've pulled in all relevant changes from the OMPI trunk (e.g., Fortran implementations of the new MPI-3 MPROBE stuff for mpif.h, use mpi, and use mpi_f08, and the recent Fujitsu Fortran patches).
I anticipate some instability when we bring this stuff into the trunk, simply because it touches a LOT of code in the MPI layer in the OMPI code base. We'll try our best to make it as pain-free as possible, but please bear with us when it is committed.
This commit was SVN r26283.
111 строки
4.6 KiB
Fortran
111 строки
4.6 KiB
Fortran
! -*- fortran -*-
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!
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! Copyright (c) 2004-2006 The Trustees of Indiana University and Indiana
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! University Research and Technology
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! Corporation. All rights reserved.
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! Copyright (c) 2004-2005 The University of Tennessee and The University
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! of Tennessee Research Foundation. All rights
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! reserved.
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! Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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! University of Stuttgart. All rights reserved.
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! Copyright (c) 2004-2005 The Regents of the University of California.
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! All rights reserved.
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! Copyright (c) 2006-2012 Cisco Systems, Inc. All rights reserved.
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! $COPYRIGHT$
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!
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! Additional copyrights may follow
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!
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! $HEADER$
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!
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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! WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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!
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! Do ***not*** copy this file to the directory where your Fortran
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! fortran application is compiled unless it is absolutely necessary! Most
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! modern Fortran compilers now support the -I command line flag, which
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! tells the compiler where to find .h files (specifically, this one). For
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! example:
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!
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! shell$ mpif77 foo.f -o foo -I$OMPI_HOME/include
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!
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! will probably do the trick (assuming that you have set OMPI_HOME
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! properly).
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!
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! That being said, OMPI's "mpif77" wrapper compiler should
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! automatically include the -I option for you. The following command
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! should be equivalent to the command listed above:
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!
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! shell$ mpif77 foo.f -o foo
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!
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! You should not copy this file to your local directory because it is
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! possible that this file will be changed between versions of Open MPI.
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! Indeed, this mpif.h is incompatible with the mpif.f of other
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! implementations of MPI. Using this mpif.h with other implementations
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! of MPI, or with other versions of Open MPI will result in undefined
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! behavior (to include incorrect results, segmentation faults,
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! unexplainable "hanging" in your application, etc.). Always use the
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! -I command line option instead (or let mpif77 do it for you).
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!
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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! WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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!
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! This file is included as a back-end file to both mpif.h (i.e., the
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! standardized MPI Fortran header file) and a bunch of the MPI
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! Fortran 90 subroutine implementations found in ompi/mpi/f90.
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!
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! This file contains the output from configure that is relevant for
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! Fortran applications (both 77 and 90) and a few values that are
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! necessary to compile the F90 module (e.g., MPI_STATUS_SIZE).
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!
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! Include the MPI I/O stuff, if needed
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@OMPI_MPIF_MPI_IO_INCLUDE@
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!
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! OMPI version
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! This file is generated from configure; do not edit it manually.
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!
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integer OMPI_MAJOR_VERSION, OMPI_MINOR_VERSION
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integer OMPI_RELEASE_VERSION
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character*32 OMPI_GREEK_VERSION
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character*32 OMPI_SVN_VERSION
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parameter (OMPI_MAJOR_VERSION=@OMPI_MAJOR_VERSION@)
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parameter (OMPI_MINOR_VERSION=@OMPI_MINOR_VERSION@)
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parameter (OMPI_RELEASE_VERSION=@OMPI_RELEASE_VERSION@)
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parameter (OMPI_GREEK_VERSION="@OMPI_GREEK_VERSION@")
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parameter (OMPI_SVN_VERSION="@OMPI_SVN_VERSION@")
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!
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! Kind parameters
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!
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integer MPI_OFFSET_KIND, MPI_ADDRESS_KIND, MPI_INTEGER_KIND
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parameter (MPI_INTEGER_KIND=@OMPI_MPI_INTEGER_KIND@)
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parameter (MPI_ADDRESS_KIND=@OMPI_MPI_ADDRESS_KIND@)
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parameter (MPI_OFFSET_KIND=@OMPI_MPI_OFFSET_KIND@)
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!
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! Miscellaneous constants
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!
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integer MPI_STATUS_SIZE
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parameter (MPI_STATUS_SIZE=@OMPI_FORTRAN_STATUS_SIZE@)
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!
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! Configurable length constants
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!
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integer MPI_MAX_PROCESSOR_NAME
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integer MPI_MAX_ERROR_STRING
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integer MPI_MAX_OBJECT_NAME
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integer MPI_MAX_LIBRARY_VERSION_STRING
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integer MPI_MAX_INFO_KEY
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integer MPI_MAX_INFO_VAL
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integer MPI_MAX_PORT_NAME
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integer MPI_MAX_DATAREP_STRING
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parameter (MPI_MAX_PROCESSOR_NAME=@OPAL_MAX_PROCESSOR_NAME@-1)
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parameter (MPI_MAX_ERROR_STRING=@OPAL_MAX_ERROR_STRING@-1)
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parameter (MPI_MAX_OBJECT_NAME=@OPAL_MAX_OBJECT_NAME@-1)
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parameter (MPI_MAX_LIBRARY_VERSION_STRING=256-1)
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parameter (MPI_MAX_INFO_KEY=@OPAL_MAX_INFO_KEY@-1)
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parameter (MPI_MAX_INFO_VAL=@OPAL_MAX_INFO_VAL@-1)
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parameter (MPI_MAX_PORT_NAME=@OPAL_MAX_PORT_NAME@-1)
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parameter (MPI_MAX_DATAREP_STRING=@OPAL_MAX_DATAREP_STRING@-1)
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