MPIFilereadshared(3OpenMPI) MPIFilereadshared(3OpenMPI)

NAME
       MMPPIIFFiilleerreeaaddsshhaarreedd  -  Reads  a  file  using  the shared file pointer
       (blocking, noncollective).


SSYYNNTTAAXX
       C Syntax
           #include 
           int MPIFilereadshared(MPIFile fh, void *buf, int count,
       MPIDatatype datatype, MPIStatus *status)

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


CC++++ SSyynnttaaxx
       #include 
       void MPI::File::Readshared(void* buf, int count,
            const MPI::Datatype& datatype, MPI::Status& status)

       void MPI::File::Readshared(void* buf, int count,
            const MPI::Datatype& datatype)


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


IINNPPUUTT PPAARRAAMMEETTEERRSS
       count     Number of elements in buffer (integer)

       datatype  Data type of each buffer element (handle).


OOUUTTPPUUTT PPAARRAAMMEETTEERRSS
       buf       Initial address of buffer (choice).

       status    Status object (status).

       IERROR    Fortran only: Error status (integer).


DESCRIPTION
       MPIFilereadshared is a blocking routine that uses  the  shared  file
       pointer  to read files. The order of serialization is not deterministic
       for this noncollective routine.


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 2006  MPIFilereadshared(3OpenMPI)