Energy-Efficient Computing Strategies and Techniques
Explore the world of energy-efficient computing through techniques like consolidation, sleep states, and throttling. Dive into PowerNap, RAILS, and agile methodologies to optimize power usage while enhancing performance in data centers and beyond.
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Presentation Transcript
CSE 591: Energy-Efficient Computing Lecture 4 SLEEP: full-system Anshul Gandhi 347, CS building anshul@cs.stonybrook.edu
US data centers: 100 billion kWh by 2011 ?? $$ Server utilization: <30% Idle server power: 60% of peak Idle periods: ~seconds why important?
Existing techniques 1. Consolidation 2. Sleep states 3. Throttling (DVFS)
PowerNap 1. Simple idea (only 2 states) Minimize power draw in sleep Fast transitions 2. Model (power and response time) 3. PowerNap vs DVFS 4. RAILS
agile PowerNap was NOT implemented agile took first REAL step towards that Static consolidation vs Dynamic consolidation How to minimize latency penalties of dynamic consolidation? 3 ideas. agile: dynamic virtualization PowerNap implementation +
agile: low-power states Turbo C0 P states T states C1 C1E C2 C3 S0 C6 S1 S2 S3 G0 S4 G2 S5 G3
agile: dynamic consolidation 1. Host power-up 2. VM migration 3. Host power-down
