DVFS Virtualization for Energy Minimization of Mixed-Criticality Dual-OS Platforms
TimeWednesday, July 13th6pm - 7pm PDT
LocationLevel 2 Lobby
DescriptionA dual-OS platform can efficiently implement emerging mixed-criticality systems, by consolidating a real-time OS (RTOS) and a general-purpose OS (GPOS). Although the dual-OS platform attracts increasing attention, it often suffers from energy inefficiency in the GPOS for guaranteeing real-time responses of the RTOS. This paper proposes an energy minimization method called DVFS virtualization, which allows running multiple DVFS policies dedicated for the RTOS and GPOS, respectively. The evaluation experiment using a commercial processor showed that the proposed hardware could change the supply voltage within 1 μs and reduce the energy consumption 51 % more than previous methods.