db2204f2f3
This commit adds code to allow support for the info assertions added by mpi-forum/mpi-issues#11. The assertions added are: mpi_assert_no_any_tag, mpi_assert_no_any_source, mpi_assert_exact_length, and mpi_assert_allow_overtaking. This commit also adds support for the mpi_assert_no_any_source and mpi_assert_allow_overtaking info keys to the ob1 pml. Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
104 строки
3.2 KiB
Plaintext
104 строки
3.2 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
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.\" $COPYRIGHT$
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.TH MPI_Comm_set_info 3 "#OMPI_DATE#" "#PACKAGE_VERSION#" "#PACKAGE_NAME#"
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.SH NAME
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\fBMPI_Comm_set_info\fP \- Set communicator info hints
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.
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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_set_info(MPI_Comm \fIcomm\fP, MPI_Info \fIinfo\fP)
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.
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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_SET_INFO(\fICOMM, INFO, IERROR\fP)
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INTEGER \fICOMM, INFO, IERROR \fP
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.
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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_set_info(\fIcomm\fP, \fIinfo\fP, \fIierror\fP)
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TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
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TYPE(MPI_Info), INTENT(IN) :: \fIinfo\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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comm
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Communicator on which to set info hints
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.TP 1i
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info
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Info object containing hints to be set on
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.I comm
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.
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.SH OUTPUT PARAMETERS
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.TP 1i
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IERROR
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Fortran only: Error status (integer).
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.
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.SH DESCRIPTION
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.ft R
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MPI_COMM_SET_INFO sets new values for the hints of the communicator
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associated with
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.IR comm .
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MPI_COMM_SET_INFO is a collective routine. The info object may be
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different on each process, but any info entries that an implementation
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requires to be the same on all processes must appear with the same
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value in each process's
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.I info
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object.
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.sp
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The following info key assertions may be accepted by Open MPI:
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.sp
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\fImpi_assert_no_any_tag\fP (boolean): If set to true, then the
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implementation may assume that the process will not use the
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MPI_ANY_TAG wildcard on the given
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communicator.
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.sp
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\fImpi_assert_no_any_source\fP (boolean): If set to true, then
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the implementation may assume that the process will not use the
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MPI_ANY_SOURCE wildcard on the given communicator.
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.sp
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\fImpi_assert_exact_length\fP (boolean): If set to true, then the
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implementation may assume that the lengths of messages received by the
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process are equal to the lengths of the corresponding receive buffers,
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for point-to-point communication operations on the given communicator.
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.sp
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\fImpi_assert_allow_overtaking\fP (boolean): If set to true, then the
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implementation may assume that point-to-point communications on the
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given communicator do not rely on the non-overtaking rule specified in
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MPI-3.1 Section 3.5. In other words, the application asserts that send
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operations are not required to be matched at the receiver in the order
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in which the send operations were performed by the sender, and receive
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operations are not required to be matched in the order in which they
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were performed by the receiver.
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.
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.SH ERRORS
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Almost all MPI routines return an error value; C routines as the value
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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
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MPI_ERRORS_RETURN may be used to cause error values to be
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returned. Note that MPI does not guarantee that an MPI program can
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continue past an error.
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.
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.SH SEE ALSO
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MPI_Comm_get_info,
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MPI_Info_create,
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MPI_Info_set,
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MPI_Info_free
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