This paper is concerned with the numerical solution of dissipative initial
value problems with delays by Runge-Kutta methods. A sufficient condition f
or the dissipativity of the systems is given. The concepts of D(l)-dissipat
ivity and GD(l)-dissipativity are introduced. We investigate the dissipativ
ity properties of (k, l)-algebraically stable Runge-Kutta methods with piec
ewise constant or linear interpolation procedures for finite-dimensional an
d infinite-dimensional dynamical systems with delays.