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MPI_File_read_at_all_end(3OpenMPI)                                        MPI_File_read_at_all_end(3OpenMPI)



NAME
       MPI_File_read_at_all_end  - Reads a file at explicitly specified offsets; ending part of a split col-lective collective
       lective 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.




Open MPI 1.2                                   September 2006             MPI_File_read_at_all_end(3OpenMPI)