FATS-2TC: A Fault Tolerant real-time Scheduler for energy and temperature aware heterogeneous platforms with Two types of Cores

Abstract

Fault tolerance in safety-critical real-time systems is indispensable. With the increasing density of transistors on MPSoCs, energy consumption and peak temperatures are exponentially increasing, thus making the method unreliable. This paper devises a heuristic scheduling strategy called FATS-2TC, which solves the issue of the simultaneous control of energy and peak temperature levels using the standby-sparing mechanism on systems with two types of cores (like big.LITTLE architecture) to make it resistant to transient faults. Our experimental results demonstrate that FATS-2TC can save considerable energy and lower core peak temperatures than a state-of-the-art energy-efficient fault-tolerant scheduler.