1. CSE 691: Energy-Efficient Computing Lecture 20 review Anshul Gandhi 1307, CS building anshul@cs.stonybrook.edu

2. Lenovo: Laptop-level PM

3. VMware

4. Host Power Management 1.C-states to lower idle power 2.P-states to lower active power (+TurboBoost)

5. Host Power Management

6. Distributed Resource Scheduler Migrate VMs for priority and to maintain minimum resource requirements

7. Distributed Resource Scheduler

8. Distributed Power Management Migrate VMs for host power savings Requires WOL ! Different from HPM (local vs. distributed)

9. Distributed Power Management

10. HPM vs. DPM 400VMs @ 8 hosts. 30min idle, 30min load, 30min idle

11. Google: Data center-level PM

12. Best practices 1.Thermostat 2.Airflow 3.Outside air 4.Don’t turn off servers – use them somehow.

13. Natural cooling LocationCoolingCompanies Hamina, FinlandSeawaterGoogle Dublin, IrelandOutside airAmazon, MS, Google Lulea, Sweden Outside air + server exhaust + hydro-electricity FB Rjukan, Norway Outside air +hydro-electricity Telemark Reykjavik, IcelandOutside airVerne Global

14. power_provisioning paper (Google)

15. Power breakdown

16. Average vs. Peak vs. Max

17. Power capping – extra deployment

18. DVFS 1.Simulation results 2.Latency?