17.2.111. MPI_File_get_size

MPI_File_get_size - Returns the current size of the file.

17.2.111.1. SYNTAX

17.2.111.1.1. C Syntax

#include <mpi.h>

int MPI_File_get_size(MPI_File fh, MPI_Offset *size)

17.2.111.1.2. Fortran Syntax (see FORTRAN 77 NOTES)

USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_FILE_GET_SIZE(FH, SIZE, IERROR)
     INTEGER FH, ERROR
     INTEGER(KIND=MPI_OFFSET_KIND)   SIZE

17.2.111.1.3. Fortran 2008 Syntax

USE mpi_f08
MPI_File_get_size(fh, size, ierror)
     TYPE(MPI_File), INTENT(IN) :: fh
     INTEGER(KIND=MPI_OFFSET_KIND), INTENT(OUT) :: size
     INTEGER, OPTIONAL, INTENT(OUT) :: ierror

17.2.111.2. INPUT PARAMETERS

  • fh: File handle (handle).

  • size: Size of the file in bytes (integer).

17.2.111.3. OUTPUT PARAMETER

  • IERROR: Fortran only: Error status (integer).

17.2.111.4. 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 physically allocated for the file in those cases where all bytes in this file have not been written at least once.

17.2.111.5. 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.

17.2.111.6. ERRORS

Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument.

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.