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MPI_Initialized(3OpenMPI)                                                          MPI_Initialized(3OpenMPI)



NAME
       MPI_Initialized - Indicates whether MPI_Init has been called.


SYNTAX
C Syntax
       #include <mpi.h>
       int MPI_Initialized(int *flag)


Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_INITIALIZED(FLAG, IERROR)
            LOGICAL   FLAG
            INTEGER   IERROR


C++ Syntax
       #include <mpi.h>
       bool Is_initialized()


OUTPUT PARAMETERS
       flag      Flag is true if MPI_Init has been called and false otherwise.

       IERROR    Fortran only: Error status (integer).


DESCRIPTION
       This  routine  may be used to determine whether MPI_Init has been called. It is the only routine that
       may be called before MPI_Init is called.


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. By default, this error
       handler aborts the MPI job, except for I/O function errors. The error handler  may  be  changed  with
       MPI_Comm_set_errhandler;  the  predefined  error handler MPI_ERRORS_RETURN may be used to cause error
       values to be returned. Note that MPI does not guarantee that an MPI  program  can  continue  past  an
       error.


SEE ALSO
       MPI_Init




Open MPI 1.2                                   September 2006                      MPI_Initialized(3OpenMPI)