0b8baa217d
This commit contains the following changes: The C++ bindings were removed from the standard in MPI-3.0. This commit removes the entirety of the C++ bindings as well as the support configury. Removes all references to C++ from the man pages. This includes the bindings themselves, all references to what C++ bindings return, all not-available comments, and differences between C++ and other language bindings. If the user passes --enable-mpi-cxx, --enable-mpi-cxx-seek, or --enable-cxx-exceptions, print a warning message an abort configure. Signed-off-by: Jeff Squyres <jsquyres@cisco.com> Signed-off-by: Nathan Hjelm <hjelmn@google.com>
105 строки
2.6 KiB
Plaintext
105 строки
2.6 KiB
Plaintext
.\" -*- nroff -*-
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.\" Copyright (c) 2010-2015 Cisco Systems, Inc. All rights reserved.
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.\" Copyright 2006-2008 Sun Microsystems, Inc.
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.\" Copyright (c) 1996 Thinking Machines Corporation
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.\" Copyright (c) 2020 Google, LLC. All rights reserved.
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.\" $COPYRIGHT$
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.TH MPI_Init 3 "#OMPI_DATE#" "#PACKAGE_VERSION#" "#PACKAGE_NAME#"
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.SH NAME
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\fBMPI_Init\fP \- Initializes the MPI execution environment
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.SH SYNTAX
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.ft R
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.SH C Syntax
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.nf
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#include <mpi.h>
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int MPI_Init(int *\fIargc\fP, char ***\fIargv\fP)
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.fi
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.SH Fortran Syntax
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.nf
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USE MPI
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! or the older form: INCLUDE 'mpif.h'
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MPI_INIT(\fIIERROR\fP)
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INTEGER \fIIERROR\fP
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.fi
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.SH Fortran 2008 Syntax
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.nf
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USE mpi_f08
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MPI_Init(\fIierror\fP)
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INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP
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.fi
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.SH INPUT PARAMETERS
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.ft R
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.TP 1i
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argc
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C only: Pointer to the number of arguments.
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.TP 1i
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argv
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C only: Argument vector.
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.SH OUTPUT PARAMETER
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.ft R
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.TP 1i
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IERROR
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Fortran only: Error status (integer).
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.SH DESCRIPTION
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.ft R
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This routine, or MPI_Init_thread, must be called before most other MPI
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routines are called. There are a small number of exceptions, such as
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MPI_Initialized and MPI_Finalized. MPI can be initialized at most
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once; subsequent calls to MPI_Init or MPI_Init_thread are erroneous.
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.sp
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All MPI programs must contain a call to MPI_Init or
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MPI_Init_thread. Open MPI accepts the C \fIargc\fP and \fIargv\fP
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arguments to main, but neither modifies, interprets, nor distributes
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them:
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.sp
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.nf
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{
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/* declare variables */
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MPI_Init(&argc, &argv);
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/* parse arguments */
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/* main program */
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MPI_Finalize();
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}
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.fi
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.SH NOTES
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.ft R
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The Fortran version does not have provisions for \fIargc\fP and
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\fIargv\fP and takes only IERROR.
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.sp
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The MPI Standard does not say what a program can do before an MPI_Init
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or after an MPI_Finalize. In the Open MPI implementation, it should do
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as little as possible. In particular, avoid anything that changes the
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external state of the program, such as opening files, reading standard
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input, or writing to standard output.
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.SH ERRORS
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.ft R
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Almost all MPI routines return an error value; C routines as
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the value of the function and Fortran routines in the last argument.
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.sp
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Before the error value is returned, the current MPI error handler is
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called. By default, this error handler aborts the MPI job, except for
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I/O function errors. The error handler may be changed with
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MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN
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may be used to cause error values to be returned. Note that MPI does not
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guarantee that an MPI program can continue past an error.
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.sp
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See the MPI man page for a full list of MPI error codes.
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.SH SEE ALSO
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.ft R
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.nf
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MPI_Init_thread
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MPI_Initialized
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MPI_Finalize
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MPI_Finalized
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