On Enhancing Electromigration-Related Reliability of Heterogeneous MPSoC via Task Scheduling

With the technology of integrated circuits entering into nanometer regime, circuit aging continuously exacerbated, which brings prominent challenges to the reliability of multi-processor system-on-chip（MPSoC）. Regarding to the problem that existing solutions for heterogeneous MPSoC reliability enhancement haven’t taken account of reliability diversity among processors, a task scheduling algorithm considering reliability diversity is proposed. To quantify the reliability diversity among the processors within heterogeneous MPSo Cs, the algorithm combines with Electromigration-aware mean time to failure（MTTF） model of single processor and a target model is concluded. Based on the target model, a task scheduling algorithm named cross is presented, which reduces the reliability diversity among processors for enhancing overall reliability of heterogeneous MPSoC. Experimental results demonstrated that a reduction of 3.71% in MTTF variation coefficient was achieved by the proposed task scheduling algorithm, compared with the existing workload balancing task scheduling algorithm.