NAME

       MPI_File_read_ordered_end - Reads a file at a location specified by a shared file pointer;
       ending part of a split collective routine (blocking).

SYNTAX

C Syntax

       #include <mpi.h> int MPI_File_read_ordered_end(MPI_File  fh,  void  *buf,       MPI_Status
       *status)

Fortran Syntax

       USE MPI
       ! or the older form: INCLUDE 'mpif.h'
       MPI_FILE_READ_ORDERED_END(FH, BUF, STATUS, IERROR)
            <type>    BUF(*)
            INTEGER   FH, STATUS(MPI_STATUS_SIZE), IERROR

C++ Syntax

       #include <mpi.h>
       void MPI::File::Read_ordered_end(void* buf, MPI::Status& status)

       void MPI::File::Read_ordered_end(void* buf)

INPUT/OUTPUT PARAMETER

       fh        File handle (handle).

OUTPUT PARAMETERS

       buf       Initial address of buffer (choice).

       status    Status object (status).

       IERROR    Fortran only: Error status (integer).

DESCRIPTION

       MPI_File_read_ordered_end  is  the  ending part of a split collective routine that must be
       called by all processes in the communicator group associated  with  the  file  handle  fh.
       MPI_File_rad_ordered_end      blocks      until     the     operation     initiated     by
       MPI_File_read_ordered_begin completes. It attempts to read the  file  associated  with  fh
       into  the  user's  buffer  buf.  The shared file pointer is updated by the amounts of data
       requested by all processes of the group. For each process, the location  in  the  file  at
       which  data  is  read  is the position at which the shared file pointer would be after all
       processes whose ranks within the group are less than that of this process had  read  their
       data.

NOTES

       All  the  nonblocking  collective  routines for data access are "split" into two routines,
       each with _begin or _end as a suffix. These split collective routines are subject  to  the
       semantic rules described in Section 9.4.5 of the MPI-2 standard.

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.