kira -u -D 1 -b 1 -C 600 -t 200 -a 0.1 -O restartfile < infile > outfile -u: enables unperturbed binaries (in newer versions this relates to unperturbed MULTIPLES and is enabled by default) -D 1: output snapshot each timestep -b 1: full binary output each timestep -C: GRAPE release interval -t 200: compute the 1000 timesteps in chunks of 200 timesteps -a 0.1: accuracy parameter = 0.1 (equivalent to 0.01 for NBODY4 -> parameter is within a square root for NBODY, but outside this square root for STARLAB) -O: output a restart file every timestep