System dynamics in SAPERE is complex because  of opennes and due to the self-* requirements imposed by the pervasive computing setting: a simulation framework is hence needed for what-if analysis prior to deployment.
In this talk I present a prototype simulator which — due to the role of chemical-like dynamics — is based on a variation of an existing SSA (Stochastic Simulation Algorithm), suitable tailored to the specific features of SAPERE, including dynamicity of network topology and pattern-based application of eco-laws.