【Abstract】 In this paper, we presented some parallel diagonal implicit Runge-Kutta (PDIRK)iterative algorithms for a class of multistep Runge-Kutta methods presented by Butcherin 1960’s. Also in this paper we reached and proved some conclusions on convergence,error estimation and stability of these algorithms. Numerical experiments showed thatthese algorithms are stable, convergent and error can be controlled if m (iteration times)is large enough.更多还原