Monte-Carlo simulation of ELT scale multi-conjugate and multi-object AO systems

The use of software based simulation packages is essential for the design of adaptive optics systems on next generation ELT scale telescopes. We present Monte-Carlo AO simulation results for an E-ELT multi-IFU spectrograph instrument comprising multiple laser and natural guide stars with wavefront correction along multiple lines of sight. We discuss the techniques used to perform these simulations. Considerations are also given to compressed reconstructor representations which can greatly simplify the design of real-time control systems. We also discuss work on the use of GPUs for AO simulation.