A leakage-efficient cache controller design targeted on ultra low power embedded processors is proposed. The key insight is that a large circuits subset is accessed only when cache misses happen. By utilizing the fine-grained run-time power gating technique, such a subset can be dynamically powered-off as a power gated domain. Two simple but effective sleeping control policies are proposed to assure the leakage reduction effect; and to eliminate the impact of wake-up process, a latency cancellation mechanism is also proposed. Evaluation results show, in 90nm CMOS technology, 69% and 64% of leakage power can be reduced for instruction cache controller and data cache controller without performance degradation.
|ジャーナル||Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)|
|出版物ステータス||Published - 2009 4 6|
|イベント||22nd International Conference on Architecture of Computing Systems - ARCS 2009 - Delft, Netherlands|
継続期間: 2009 3 10 → 2009 3 13
ASJC Scopus subject areas
- Theoretical Computer Science
- Computer Science(all)