MPIFilereadorderedend(3OpenMPI) MPIFilereadorderedend(3OpenMPI)

NAME
       MMPPIIFFiilleerreeaaddoorrddeerreeddeenndd  -  Reads a file at a location specified by a
       shared file pointer; ending part of a split collective routine  (block-
       ing).


SSYYNNTTAAXX
       C Syntax
           #include 
           int MPIFilereadorderedend(MPIFile fh, void *buf,
                  MPIStatus *status)

       Fortran Syntax
           INCLUDE 'mpif.h'
           MPIFILEREADORDEREDEND(FH, BUF, STATUS, IERROR)
                          BUF(*)
                 INTEGER        FH, STATUS(MPISTATUSSIZE), IERROR


CC++++ SSyynnttaaxx
       #include 
       void MPI::File::Readorderedend(void* buf, MPI::Status& status)

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


IINNPPUUTT//OOUUTTPPUUTT PPAARRAAMMEETTEERR
       fh        File handle (handle).


OOUUTTPPUUTT PPAARRAAMMEETTEERRSS
       buf       Initial address of buffer (choice).

       status    Status object (status).

       IERROR    Fortran only: Error status (integer).


DESCRIPTION
       MPIFilereadorderedend is the ending part of a split collective rou-
       tine that must be called by all processes  in  the  communicator  group
       associated  with  the  file handle fh.  MPIFileradorderedend blocks
       until the operation initiated by MPIFilereadorderedbegin 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.


NNOOTTEESS
       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 Sec-
       tion 9.4.5 of the MPI-2 standard.


EERRRROORRSS
       Almost  all MPI routines return an error value; C routines as the value
       of the function and Fortran routines in the last  argument.  C++  func-
       tions  do  not  return  errors.  If the default error handler is set to
       MPI::ERRORSTHROWEXCEPTIONS, 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   MPIERRORSRETURN.   The   error   handler  may  be  changed  with
       MPIFileseterrhandler;     the     predefined      error      handler
       MPIERRORSAREFATAL  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 20M0P6IFilereadorderedend(3OpenMPI)