59 lines
1.8 KiB
Groff
59 lines
1.8 KiB
Groff
.\" -*- nroff -*-
|
|
.\" Copyright 2013 Los Alamos National Security, LLC. All rights reserved.
|
|
.\" Copyright 2010 Cisco Systems, Inc. All rights reserved.
|
|
.\" Copyright 2006-2008 Sun Microsystems, Inc.
|
|
.\" Copyright (c) 1996 Thinking Machines Corporation
|
|
.\" $COPYRIGHT$
|
|
.TH MPI_Rsend 3 "Mar 26, 2019" "4.0.1" "Open MPI"
|
|
.SH NAME
|
|
\fBMPI_Rsend\fP \- Ready send.
|
|
|
|
.SH SYNTAX
|
|
.ft R
|
|
.SH C Syntax
|
|
.nf
|
|
#include <mpi.h>
|
|
int MPI_Rsend(const void *\fIbuf\fP, int\fI count\fP, MPI_Datatype\fI datatype\fP, int\fI dest\fP,
|
|
int\fI tag\fP, MPI_Comm\fI comm\fP)
|
|
|
|
.fi
|
|
.SH INPUT PARAMETERS
|
|
.ft R
|
|
.TP 1i
|
|
buf
|
|
Initial address of send buffer (choice).
|
|
.TP 1i
|
|
count
|
|
Number of elements in send buffer (nonnegative integer).
|
|
.TP 1i
|
|
datatype
|
|
Datatype of each send buffer element (handle).
|
|
.TP 1i
|
|
dest
|
|
Rank of destination (integer).
|
|
.TP 1i
|
|
tag
|
|
Message tag (integer).
|
|
.TP 1i
|
|
comm
|
|
Communicator (handle).
|
|
|
|
.SH OUTPUT PARAMETER
|
|
.ft R
|
|
.TP 1i
|
|
IERROR
|
|
Fortran only: Error status (integer).
|
|
|
|
.SH DESCRIPTION
|
|
.ft R
|
|
A ready send may only be called if the user can guarantee that a receive is
|
|
already posted. It is an error if the receive is not posted before the
|
|
ready send is called.
|
|
|
|
.SH ERRORS
|
|
Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ functions do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism will be used to throw an MPI::Exception object.
|
|
.sp
|
|
Before the error value is returned, the current MPI error handler is
|
|
called. By default, this error handler aborts the MPI job, except for I/O function errors. The error handler may be changed with MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.
|
|
|