ECE 692 Power-Aware Computer Systems Final Review Prof. Xiaorui Wang

2 Process Scheduling in OS Operating systems Processes Context switch Process scheduling

3 The Power Problem Dynamic power vs. leakage power General power-saving features Voltage drops, toggling, leakage Dynamic voltage and frequency scaling Power management policy Static Power Management Dynamic Power Management (DPM) Power state machine

4 Real-Time Scheduling The scheduling problem Terminologies used in scheduling Optimal scheduling algorithm RMS – Static EDF – Dynamic How to schedule a given task set CPU utilization analysis and schedulable bounds End-to-end scheduling framework Task allocation Synchronization protocol Subdeadline assignment

5 Feedback Control Theory Why feedback control? Advantages of feedback control theory Control design methodology System modeling Performance Specifications Controller design System diagram, Transfer functions, Basic z-transforms Stability, settling time analysis

6 Papers in the First Half Semester End-to-end CPU utilization control Basic knowledge of MPC End-to-end utilization model Power/thermal-aware utilization control Energy management for servers and clusters Power management for virtualized servers Power control for servers and clusters Coordinated performance and power management Power control for data centers Power-aware virtual machine placement

7 Papers in the Second Half Semester Power control for chip multiprocessors Power-aware cache systems Thread criticality for power efficiency in CMPs Power issues in on-chip interconnection networks Power management for memory systems Data center networks Multi-channel real-time communications in WSN

8 Final Exam When 12/10, 10:15am-12:15pm Where Ferris 510, classroom What about All the basic knowledge covered in the first two classes Control tutorial Required papers you critiqued Basic ideas The papers you presented. Detailed algorithms