XIOSim: powerperformance modeling of mobile x86 cores

Simulation is one of the main vehicles of computer architec-ture research. In this paper, we present XIOSim – a highly detailed microarchitectural simulator targeted at mobile x86 microprocessors. The simulator execution model that we propose is a blend between traditional user-level simulation and full-system simulation. Our current implementation fea-tures detailed power and performance core models which allow microarchitectural exploration. Using a novel vali-dation methodology, we show that XIOSim’s performance models manage to stay well within 10 % of real hardware for the whole SPEC CPU2006 suite. Furthermore, we validate power models against measured data to show a deviation of less than 5 % in terms of average power consumption