76 строки
2.3 KiB
Plaintext
76 строки
2.3 KiB
Plaintext
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.\" -*- 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 2015-2016 Research Organization for Information Science
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.\" and Technology (RIST). All rights reserved.
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.\" $COPYRIGHT$
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.TH MPI_File_sync 3 "#OMPI_DATE#" "#PACKAGE_VERSION#" "#PACKAGE_NAME#"
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.SH NAME
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\fBMPI_File_sync\fP \- Makes semantics consistent for data-access operations (collective).
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.SH SYNTAX
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.ft R
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.nf
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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_File_sync(MPI_File \fIfh\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_FILE_SYNC(\fIFH\fP, \fIIERROR\fP)
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INTEGER \fIFH, 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_File_sync(\fIfh\fP, \fIierror\fP)
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TYPE(MPI_File), INTENT(IN) :: \fIfh\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 MPI::File::Sync()
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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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fh
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File handle (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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Calling MPI_File_sync with
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.I fh
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causes all previous writes to
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.I fh
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by the calling process to be written to permanent storage. If other processes have made updates to permanent storage, then all such updates become visible to subsequent reads of
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.I fh
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by the calling process.
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.sp
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MPI_File_sync is a collective operation. The user is responsible for ensuring that all nonblocking requests on
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.I fh
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have been completed before calling MPI_File_sync. Otherwise, the call to MPI_File_sync is erroneous.
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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. For MPI I/O function errors, the default error handler is set to MPI_ERRORS_RETURN. The error handler may be changed with MPI_File_set_errhandler; the predefined error handler MPI_ERRORS_ARE_FATAL may be used to make I/O errors fatal. Note that MPI does not guarantee that an MPI program can continue past an error.
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