Skip to content

Latest commit

 

History

History
92 lines (61 loc) · 2.18 KB

MPI_File_read_ordered_end.3.rst

File metadata and controls

92 lines (61 loc) · 2.18 KB
Raw

MPI_File_read_ordered_end

:ref:`MPI_File_read_ordered_end` |mdash| 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

Fortran 2008 Syntax

USE mpi_f08
MPI_File_read_ordered_end(fh, buf, status, ierror)
     TYPE(MPI_File), INTENT(IN) :: fh
     TYPE(*), DIMENSION(..), ASYNCHRONOUS :: buf
     TYPE(MPI_Status) :: status
     INTEGER, OPTIONAL, INTENT(OUT) :: ierror

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

:ref:`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 :ref:`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