def METHOD_NAME(self):
    self.comm  = Epetra.PyComm()
    self.size  = self.comm.NumProc() * 9
    self.map   = Epetra.Map(self.size,0,self.comm)
    self.Ar    = Epetra.CrsMatrix(Epetra.Copy,self.map,3)
    self.Ai    = Epetra.CrsMatrix(Epetra.Copy,self.map,3)
    self.fill(self.Ar)
    self.fill(self.Ai)
    self.xr    = Epetra.Vector(self.map)
    self.xi    = Epetra.Vector(self.map)
    self.br    = Epetra.Vector(self.map)
    self.bi    = Epetra.Vector(self.map)
    self.xr[:] =  1.2
    self.xi[:] = -2.3
    self.br[:] =  3.4
    self.bi[:] = -4.5
    self.comm.Barrier()