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MPI_Initialized - Indicates whether MPI_Init has been called.
#include <mpi.h>
int MPI_Initialized(int *flag)
INCLUDE ’mpif.h’
MPI_INITIALIZED(FLAG, IERROR)
LOGICAL FLAG
INTEGER IERROR
#include <mpi.h>
bool Is_initialized()
- flag
- Flag is true if MPI_Init has been called and false
otherwise.
- IERROR
- Fortran only: Error status (integer).
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.
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.
MPI_Init
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