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Related Works System-level Energy Management for Periodic Real-Time Tasks (RTSS’06) On the Minimization of the Instantaneous Temperature for Periodic Real-Time Tasks (RTAS’07) Integrating Adaptive Components: An Emerging Challenge in Performance-Adaptive Systems and a Server Farm Case- Study(RTSS’07)
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ECE555 Course Project Proposal
Coordinated Power and Utilization Control for DRE System with E2E Tasks
Xing Fu Eric Puster16 September 2008
Background Current research of Power Aware Real Time
Community focuses on minimization of Power/Temperature of Real Time System. Lacks explicit guarantee of Power.
Various feedback control systems have been designed and implemented.
Little research on composing BIG adaptive systems.
Related Works System-level Energy Management for
Periodic Real-Time Tasks (RTSS’06) On the Minimization of the Instantaneous
Temperature for Periodic Real-Time Tasks (RTAS’07)
Integrating Adaptive Components: An Emerging Challenge in Performance-Adaptive Systems and a Server Farm Case-Study(RTSS’07)
Description of Project First-stage system diagram
ModelPredictiveController
Distributed System(m tasks, n processors)
Distributed System(m tasks, n processors)
UtilizationMonitor
RateModulator
UMUM UM
RM
UM
RM
FrequencyCPU
CF
PowerController
UtilizationController
Feedback Loop
Precedence Constraints
Subtask
Feedback Loop
Precedence Constraints
Subtask
ControlledVariablesControlledVariables
ControlInputs
Challenges(1) Current research focuses on reducing power
consumption as much as possible while guaranteeing Real Time. But when power failure occurs, these systems can do nothing. So power needs to be controlled in conjunction with utilization.
The above imposed a new challenge: how to resolve control between two conflicting (Why?) controllers.
Challenges(2) Current research only presents simulations.
To evaluate system design under practical situation, we will need to setup experimental test bed.
Goals Present theoretical Control analysis of stability
for both power controller & utilization controller. Design coordinated MPC controllers.
Obtain initial experimental result based on previous projects.
We assume that two coordinated controllers are feasible. If time allows, this feasibility will be further investigated.
