65 строки
1.9 KiB
Plaintext
65 строки
1.9 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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.\" $COPYRIGHT$
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.TH MPI_Group_free 3 "#OMPI_DATE#" "#PACKAGE_VERSION#" "#PACKAGE_NAME#"
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.SH NAME
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\fBMPI_Group_free \fP \- Frees a group.
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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_Group_free(MPI_Group *\fIgroup\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_GROUP_FREE(\fIGROUP, IERROR\fP)
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INTEGER \fIGROUP, 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_Group_free(\fIgroup\fP, \fIierror\fP)
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TYPE(MPI_Group), INTENT(INOUT) :: \fIgroup\fP
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INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\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 Group::Free()
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.fi
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.SH INPUT/OUTPUT PARAMETER
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.TP 1i
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group
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Group (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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This operation marks a group object for deallocation. The handle group is set to MPI_GROUP_NULL by the call. Any ongoing operation using this group will complete normally.
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.SH NOTE
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.ft R
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On return, group is set to MPI_GROUP_NULL.
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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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