73 строки
2.2 KiB
Plaintext
73 строки
2.2 KiB
Plaintext
.\" -*- nroff -*-
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.\" Copyright 2013 Los Alamos National Security, LLC. All rights reserved.
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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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.TH MPI_Rsend 3 "#OMPI_DATE#" "#PACKAGE_VERSION#" "#PACKAGE_NAME#"
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.SH NAME
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\fBMPI_Rsend\fP \- Ready send.
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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_Rsend(const void *\fIbuf\fP, int\fI count\fP, MPI_Datatype\fI datatype\fP, int\fI dest\fP,
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int\fI tag\fP, MPI_Comm\fI comm\fP)
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.fi
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.SH Fortran Syntax
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.nf
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INCLUDE 'mpif.h'
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MPI_RSEND(\fIBUF, COUNT, DATATYPE, DEST, TAG, COMM, IERROR\fP)
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<type> \fIBUF\fP(*)
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INTEGER \fICOUNT, DATATYPE, DEST, TAG, COMM, IERROR\fP
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.fi
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.SH C++ Syntax
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.nf
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#include <mpi.h>
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void Comm::Rsend(const void* \fIbuf\fP, int \fIcount\fP, const Datatype&
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\fIdatatype\fP, int \fIdest\fP, int \fItag\fP) const
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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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buf
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Initial address of send buffer (choice).
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.TP 1i
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count
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Number of elements in send buffer (nonnegative integer).
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.TP 1i
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datatype
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Datatype of each send buffer element (handle).
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.TP 1i
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dest
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Rank of destination (integer).
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.TP 1i
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tag
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Message tag (integer).
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.TP 1i
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comm
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Communicator (handle).
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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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A ready send may only be called if the user can guarantee that a receive is
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already posted. It is an error if the receive is not posted before the
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ready send is called.
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.SH ERRORS
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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.
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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 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.
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