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Xing Fu Eric Puster 14 October 2008

Xing Fu Eric Puster 14 October 2008. ECE555 Course Project Midterm Presentation Coordinated Power and Utilization Control for DRE System with E2E Tasks. Real-Time Embedded Systems and Networks Laboratory University of Tennessee. Summary of Project.

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Xing Fu Eric Puster 14 October 2008

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  1. Xing Fu Eric Puster 14October 2008 ECE555 Course Project Midterm PresentationCoordinated Power and Utilization Control for DRE System with E2E Tasks Real-Time Embedded Systems and Networks Laboratory University of Tennessee

  2. Summary of Project • A coordinated control architecture that is composed of a cluster-level power control loop, a cluster-level utilization control loop. We configure different control loops to guarantee the desired power and utilization. • Stability analysis of coupled control loops. • Evaluation of system design by experimental test bed.

  3. Summary of Project (Cont) Real-Time Embedded Systems and Networks Laboratory University of Tennessee

  4. System Design (1) Utilization Control Problem Formulation Based on MPC control theory Objective function: Control variable: Control input: Real-Time Embedded Systems and Networks Laboratory University of Tennessee

  5. System Design (2) • Power Control Problem Formulation Also based on MPC control theory Objective function: Control variable: Control input:

  6. System Design (3) • Stability Analysis Apply control theoretic analysis of stability of MPC Utilization Controller. The impact of MPC Power Controller is modeled as a model variation of Utilization Controller. • Constrains Enforcement Based on above result, resulted frequency range will be implemented as an additional constrains in the Power MPC controller design problem

  7. Preliminary Results (1) • Current System Diagram Real-Time Embedded Systems and Networks Laboratory University of Tennessee

  8. Preliminary Results (2) • Limitations Server-Level “Power” Controller controls CPU Utilization rather than Power. • Conclusions Examine the impact of CPU frequency throttling on CPU Utilization.

  9. Preliminary Results (3)

  10. Next Steps Replace Server-Level “Power” Controller with Cluster-Level Power Controller. Finish stability analysis of coordinated control loops. Setup Cluster-Level Power Controller on Server Cluster Real-Time Embedded Systems and Networks Laboratory University of Tennessee

  11. Work Plan & Demonstration To demonstrate our result in final term, the standard way is show figures. If possible a live demo will be available. Real-Time Embedded Systems and Networks Laboratory University of Tennessee

  12. Thank you! Xing Fu xfu1@utk.edu Eric Puster epuster@eecs.utk.edu Real-Time Embedded Systems and Networks Laboratory University of Tennessee

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