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MPI_File_get_size - Returns the current size of the file.
C Syntax
#include <mpi.h>
int MPI_File_get_size(MPI_File fh, MPI_Offset *size)
INCLUDE ’mpif.h’
MPI_FILE_GET_SIZE(FH, SIZE, IERROR)
INTEGER FH, ERROR
INTEGER(KIND=MPI_OFFSET_KIND) SIZE
#include <mpi.h>
MPI::Offset MPI::File::Get_size() const
- fh
- File handle (handle).
- size
- Size of the file in bytes
(integer).
- IERROR
- Fortran only: Error status (integer).
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.
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.
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.
MPI_File_preallocate
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