Energy-Efficient Semiconductor Physical Design and Its Role in Sustainable Computing Systems

Abstract

With environmental, economic, and social considerations dominating computer system design, energy efficiency has become one of the primary concerns. This article will present the basic theory behind energy-efficient semiconductor physical design and discuss its implications for energy-sustainable computer systems. Topics include static and dynamic power dissipation in IC circuits, technology scaling, and power analysis methodology. For power optimization, the following physical design methodology and techniques are discussed: multi-voltage domain design, clock tree synthesis, and clever placement and routing techniques. The article reviews state-of-the-art power management techniques such as dynamic voltage and frequency scaling, power gating, and near-threshold operation and their impact on energy usage and sustainability, as well as environmental, economic, and policy aspects of sustainability. While carbon-aware design optimization and lifecycle assessment strategies are covered, energy-efficient physical design techniques continue to be a critical aspect of responsible technology development. Along with technological advancement and economic drivers, regulation in an increasingly power-constrained computing landscape has elevated the importance of energy-efficient physical design techniques.