1 research outputs found
Analysis and Control of Power-Temperature Dynamics in Heterogeneous Multiprocessors
Virtually all electronic systems try to optimize a fundamental trade-off
between higher performance and lower power consumption. The latter becomes
critical in mobile computing systems, such as smartphones, which rely on
passive cooling. Otherwise, the heat concentrated in a small area drives both
the junction and skin temperatures up. High junction temperatures degrade the
reliability, while skin temperature deteriorates the user experience.
Therefore, there is a strong need for a formal analysis of power
consumption-temperature dynamics and predictive thermal management algorithms.
This paper presents a theoretical power-temperature analysis of multiprocessor
systems, which are modeled as multi-input multi-output dynamic systems. We
analyze the conditions under which the system converges to a stable
steady-state temperature. Then, we use these models to design a control
algorithm that manages the temperature of the system without affecting the
performance of the application. Experiments on the Odroid-XU3 board show that
the control algorithm is able to regulate the temperature with a minimal loss
in performance when compared to the default thermal governors.Comment: Will appear in a future issue of IEEE Transactions on Control Systems
Technolog