Dynamic power management for wearable devices with non-volatile memory

To address the demands of more computing power, vendors and researchers had been focusing on increasing the clock rate and including more components in a chip, but these technologies had also led to high energy consumption and overheating problems. When energy saving is considered, the Dynamic Power Management (DPM) technique can change the operating mode of some components in a system. When Non-Volatile Memory (NVM) is further included, the design of task scheduling for energy saving and/or better performance could be even more feasible for the application scenario of wearable devices. This work exploits NVM to keep critical data and binaries during system dormant periods so as to reduce the system resumption time and further save more energy of wearable devices by prolonging the dormant duration. Real-Time analysis is provided for the performance guarantee of applications on the target system. Insights into the energy saving designs with NVM are presented.