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MPI_File_get_size(3OpenMPI)                                                      MPI_File_get_size(3OpenMPI)



NAME
       MPI_File_get_size - Returns the current size of the file.


SYNTAX
       C Syntax
           #include <mpi.h>
           int MPI_File_get_size(MPI_File fh, MPI_Offset *size)

       Fortran Syntax (see FORTRAN 77 NOTES)
           INCLUDE 'mpif.h'
           MPI_FILE_GET_SIZE(FH, SIZE,  IERROR)
            INTEGER FH, ERROR
            INTEGER(KIND=MPI_OFFSET_KIND) SIZE


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


INPUT PARAMETERS
       fh        File handle (handle).

       size      Size of the file in bytes (integer).


OUTPUT PARAMETER
       IERROR    Fortran only: Error status (integer).


DESCRIPTION
       MPI_File_get_size  returns,  in size , the current size in bytes of the file associated with the file
       handle fh. Note that the file size returned by Solaris may not represent the number of  bytes  physi-cally physically
       cally  allocated  for  the  file in those cases where all bytes in this file have not been written at
       least once.


FORTRAN 77 NOTES
       The MPI standard prescribes portable Fortran syntax for the SIZE argument only for  Fortran  90.  Sun
       FORTRAN 77 users may use the non-portable syntax

            INTEGER*MPI_OFFSET_KIND SIZE

       where  MPI_ADDRESS_KIND  is a constant defined in mpif.h and gives the length of the declared integer
       in bytes.


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.


SEE ALSO
       MPI_File_preallocate




Open MPI 1.2                                   September 2006                    MPI_File_get_size(3OpenMPI)