MPI_File_get_atomicity.3 - Online Linux Manual Page

MPI_File_get_atomicity - Online Linux Manual PageSection : 3
Updated : Jan 21, 2016
Source : 1.10.2
Note : Open MPI

NAMEMPI_File_get_atomicity − Returns current consistency semantics for data-access operations.

SYNTAXC 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 \FIFH, IERROR\FP LOGICAL \FIFLAG\FP

C++ Syntax#include <mpi.h> bool MPI::File::Get_atomicity() const

INPUT PARAMETERfh File handle (handle).

OUTPUT PARAMETERflag true if atomic mode is enabled, false if nonatomic mode is enabled (boolean). IERROR Fortran only: Error status (integer).

DESCRIPTIONMPI_File_get_atomicity returns the current consistency semantics for data access operations on the set of file handles created by one collective MPI_File_open. If flag is true, atomic mode is currently enabled; if flag is false, nonatomic mode is currently enabled.

ERRORSAlmost 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. 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. 0

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