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
3.0 KiB
Plaintext
105 строки
3.0 KiB
Plaintext
.\" -*- nroff -*-
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.\" Copyright 2010 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_Comm_join 3 "#OMPI_DATE#" "#PACKAGE_VERSION#" "#PACKAGE_NAME#"
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.SH NAME
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\fBMPI_Comm_join\fP \- Establishes communication between MPI jobs
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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_Comm_join(int \fIfd\fP, MPI_Comm *\fIintercomm\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_COMM_JOIN(\fIFD, INTERCOMM, IERROR\fP)
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INTEGER \fIFD, INTERCOMM, IERROR\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_Comm_join(\fIfd\fP, \fIintercomm\fP, \fIierror\fP)
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INTEGER, INTENT(IN) :: \fIfd\fP
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TYPE(MPI_Comm), INTENT(OUT) :: \fIintercomm\fP
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INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP
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.fi
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.SH INPUT PARAMETER
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.ft R
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.TP 1i
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fd
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socket file descriptor (socket).
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.SH OUTPUT PARAMETERS
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.ft R
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.TP 1i
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intercomm
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Intercommunicator between processes (handle).
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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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MPI_Comm_join creates an intercommunicator from the union of two MPI
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processes that are connected by a socket. \fIfd\fP is a file
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descriptor representing a socket of type SOCK_STREAM (a two-way
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reliable byte-stream connection). Nonblocking I/O and asynchronous
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notification via SIGIO must not be enabled for the socket. The socket
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must be in a connected state, and must be quiescent when MPI_Comm_join
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is called.
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.sp
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MPI_Comm_join must be called by the process at each end of the
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socket. It does not return until both processes have called
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MPI_Comm_join.
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.SH NOTES
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.ft R
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There are no MPI library calls for opening and manipulating a socket.
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The socket \fIfd\fP can be opened using standard socket API calls.
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MPI uses the socket to bootstrap creation of the intercommunicator,
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and for nothing else. Upon return, the file descriptor will be open
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and quiescent.
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.sp
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In a multithreaded process, the application must ensure that other
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threads do not access the socket while one is in the midst of
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calling MPI_Comm_join.
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.sp
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The returned communicator will contain the two processes connected by
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the socket, and may be used to establish MPI communication with
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additional processes, through the usual MPI communicator-creation
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mechanisms.
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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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socket(3SOCKET)
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MPI_Comm_create
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MPI_Comm_group
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