Cycle-accurate power analysis for multiprocessor systems-on-a-chip

ABSTRACT

Developing energy-aware software for multiprocessor systems-on-chip (MPSoCs) is a difficult task, which requires the knowledge of the distribution of the power consumption among several heterogeneous devices (cores, memories, busses, etc.). In this work we analyze the power breakdowns of power consumption for a complete MPSoC platform, under several application workloads and operating conditions. We leverage a complete-system simulation platform with accurate power models for all key hardware modules. Our analysis shows that caches and system interconnect dominate in the power breakdown, pointing out how software locality is meaningful not only for performance but also for energy optimization.

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INDEX TERMS

Primary Classification:
  C. Computer Systems Organization
  C.4 PERFORMANCE OF SYSTEMS
      Subjects: Measurement techniques

General Terms:
Measurement, Performance

Keywords:
low power, multiprocessor, system-on-chip