Sciweavers

Share
MICRO
2002
IEEE

Dynamic frequency and voltage control for a multiple clock domain microarchitecture

11 years 4 months ago
Dynamic frequency and voltage control for a multiple clock domain microarchitecture
We describe the design, analysis, and performance of an on–line algorithm to dynamically control the frequency/voltage of a Multiple Clock Domain (MCD) microarchitecture. The MCD microarchitecture allows the frequency/voltage of microprocessor regions to be adjusted independently and dynamically, allowing energy savings when the frequency of some regions can be reduced without significantly impacting performance. Our algorithm achieves on average a 19.0% reduction in Energy Per Instruction (EPI), a 3.2% increase in Cycles Per Instruction (CPI), a 16.7% improvement in Energy–Delay Product, and a Power Savings to Performance Degradation ratio of 4.6. Traditional frequency/voltage scaling techniques which apply reductions globally to a fully synchronous processor achieve a Power Savings to Performance Degradation ratio of only 2–3. Our Energy–Delay Product improvement is 85.5% of what has been achieved using an off–line algorithm. These results were achieved using a broad rang...
Greg Semeraro, David H. Albonesi, Steve Dropsho, G
Added 15 Jul 2010
Updated 15 Jul 2010
Type Conference
Year 2002
Where MICRO
Authors Greg Semeraro, David H. Albonesi, Steve Dropsho, Grigorios Magklis, Sandhya Dwarkadas, Michael L. Scott
Comments (0)
books