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NAME
MPI_File_get_atomicity - Returns current consistency semantics for
data-access operations.
SYNTAX
C Syntax
#include <mpi.h>
int MPI_File_get_atomicity(MPI_File fh, int *flag)
Fortran Syntax
INCLUDE 'mpif.h'
MPI_FILE_GET_ATOMICITY(FH, FLAG, IERROR)
INTEGER FH, IERROR
LOGICAL FLAG
C++ Syntax
#include <mpi.h>
bool MPI::File::Get_atomicity() const
INPUT PARAMETER
fh File handle (handle).
OUTPUT PARAMETER
flag true if atomic mode is enabled, false if nonatomic mode is
enabled (boolean).
IERROR Fortran only: Error status (integer).
DESCRIPTION
MPI_File_get_atomicity returns the current consistency semantics for
data access operations on the set of file handles created by one col-
lective MPI_File_open. If flag is true, atomic mode is currently
enabled; if flag is false, nonatomic mode is currently enabled.
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++ func-
tions 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.
Before the error value is returned, the current MPI error handler is
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.
1.3.4 Nov 11, 2009 MPI_File_get_atomicity(3)
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