MPI_File_read_at_all_end(3)        Open MPI        MPI_File_read_at_all_end(3)



NAME
       MPI_File_read_at_all_end - Reads a file at explicitly specified
       offsets; ending part of a split collective routine (blocking).


SYNTAX
       C Syntax
           #include <mpi.h>
           int MPI_File_read_at_all_end(MPI_File fh, void *buf,
            MPI_Status *status)

       Fortran Syntax
           INCLUDE 'mpif.h'
           MPI_FILE_READ_AT_ALL_END(FH, BUF, STATUS, IERROR)
                 <TYPE>         BUF(*)
                 INTEGER        FH, STATUS(MPI_STATUS_SIZE), IERROR


C++ Syntax
       #include <mpi.h>
       void MPI::File::Read_at_all_end(void* buf, MPI::Status& status)

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


INPUT 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_at_all_end is a split collective routine that stores the
       number of elements actually read from the file associated with fh in
       status.  MPI_File_read_at_all_end blocks until the operation initiated
       by MPI_File_read_at_all_begin completes. The data is taken out of those
       parts of the file specified by the current view. All other fields of
       status are undefined.


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.




1.4.1                            Jan 14, 2010      MPI_File_read_at_all_end(3)
