This manual page is for Mac OS X version 10.6

If you are running a different version of Mac OS X, view the documentation locally:

  • In Terminal, using the man(1) command

Reading manual pages

Manual pages are intended as a quick reference for people who already understand a technology.

  • For more information about the manual page format, see the manual page for manpages(5).

  • For more information about this technology, look for other documentation in the Apple Reference Library.

  • For general information about writing shell scripts, read Shell Scripting Primer.


MPI_File_get_atomicity(3OpenMPI)                                            MPI_File_get_atomicity(3OpenMPI)



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 collective MPI_File_open. If flag is true,  atomic  mode  is  cur-rently currently
       rently 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++ 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.




Open MPI 1.2                                   September 2006               MPI_File_get_atomicity(3OpenMPI)

Reporting Problems

The way to report a problem with this manual page depends on the type of problem:

Content errors
Report errors in the content of this documentation with the feedback links below.
Bug reports
Report bugs in the functionality of the described tool or API through Bug Reporter.
Formatting problems
Report formatting mistakes in the online version of these pages with the feedback links below.