Bilkent University
Department of Computer Engineering

Energy-Efficient, Complexity-Effective Superscalar Processor Design


Gürhan Küçük*

Computer Science Department
Binghamton, NY, USA


Datapath components in performance-oriented superscalar processors drastically increase the complexity and energy dissipation of the processor. The energy dissipation is critical from the perspective of device reliability and cooling of the system. Up until now power consumption has not been of great concern since large packages, heat sinks and fans were capable of dissipating the generated heat. However, as the density of the chips continue to increase and systems are packaged into smaller and thinner enclosures it is becoming increasingly difficult to design adequate cooling system without incurring significant costs. Additionally, the reliability and operating lifetime of integrated circuits is greatly reduced when the ambient operating temperature increases because high temperature tends to exacerbate several silicon failure mechanisms such as electromigration, junction fatigue, and gate dielectric breakdown.

The goal of this presentation is to propose and evaluate mechanisms for power and complexity reduction within superscalar microprocessors with little or no impact on the performance. All of the proposed techniques are technology-independent, microarchitectural-level solutions requiring a minimum amount of support at the circuit level.

DATE: March 24, 2004, Wednesday @ 13:40

* Gürhan Küçük is a Ph.D. candidate in the School of Computer Science at State University of New York at Binghamton. He received his M.S. (1998) degree in Information and Computer Science from Yeditepe University, and his B.S. (1995) degree in Computer Engineering from Marmara University. Mr. Küçük’s research interests are in the area of energy-efficient architectures for high performance processors. He has been working as a research assistant for Low Power Research Group ( in SUNY-Binghamton since 2000. He co-authored numerous papers in this area. He has also several journal papers published in IEEE Transactions on Computers and IEEE Transactions on VLSI Systems. He has a pending patent filed in December 2002. Mr. Küçük is a member of ACM, IEEE, IEEE SIG-MICRO and IEEE SIG-ARCH.