Proceedings of the 2002 IEEE/ACM international conference on Computer-aided design
Predictive dynamic thermal management for multimedia applications
ICS '03 Proceedings of the 17th annual international conference on Supercomputing
Dynamic Thermal Management for High-Performance Microprocessors
HPCA '01 Proceedings of the 7th International Symposium on High-Performance Computer Architecture
HPCA '02 Proceedings of the 8th International Symposium on High-Performance Computer Architecture
Leakage aware dynamic voltage scaling for real-time embedded systems
Proceedings of the 41st annual Design Automation Conference
Compact thermal modeling for temperature-aware design
Proceedings of the 41st annual Design Automation Conference
PACE: A New Approach to Dynamic Voltage Scaling
IEEE Transactions on Computers
Temperature and supply Voltage aware performance and power modeling at microarchitecture level
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Throughput of multi-core processors under thermal constraints
ISLPED '07 Proceedings of the 2007 international symposium on Low power electronics and design
Performance optimal processor throttling under thermal constraints
CASES '07 Proceedings of the 2007 international conference on Compilers, architecture, and synthesis for embedded systems
Approximation algorithm for the temperature-aware scheduling problem
Proceedings of the 2007 IEEE/ACM international conference on Computer-aided design
System-level thermal aware design of applications with uncertain execution time
Proceedings of the 2008 IEEE/ACM International Conference on Computer-Aided Design
Temperature aware task sequencing and voltage scaling
Proceedings of the 2008 IEEE/ACM International Conference on Computer-Aided Design
Processor speed control with thermal constraints
IEEE Transactions on Circuits and Systems Part I: Regular Papers
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Dynamic thermal management for single and multicore processors under soft thermal constraints
Proceedings of the 16th ACM/IEEE international symposium on Low power electronics and design
Temperature-aware integrated DVFS and power gating for executing tasks with runtime distribution
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Leakage conscious DVS scheduling for peak temperature minimization
Proceedings of the 16th Asia and South Pacific Design Automation Conference
Thermal-Aware sensor scheduling for distributed estimation
DCOSS'10 Proceedings of the 6th IEEE international conference on Distributed Computing in Sensor Systems
Worst-case guarantees on a processor with temperature-based feedback control of speed
ACM Transactions on Embedded Computing Systems (TECS)
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As semiconductor manufacturing technology scales to smaller device sizes, the power consumption of clocked digital ICs begins to increase. Dynamic voltage and frequency scaling (DVFS) is a well-known technique for conserving energy. Recently, it has also been used to control the CPU temperature as part of Dynamic Thermal Management (DTM) techniques. Most works in these areas assume that the optimum speed profile (for either minimizing energy or maximizing performance) is a constant profile. However, in the presence of thermal constraints, we show that the optimal profile is in general, a time-varying function. We formulate the problem of maximizing the average throughput of a processor over a given time period, subject to thermal and speed constraints, as a problem in the calculus of variations. The variational approach provides a powerful framework for precisely specifying and solving the speed control problem, and allows us to obtain an exact analytical solution. The solution methodology is very general, and works for any convex power model, and simple lumped RC thermal models. The resulting speed profiles were found to consist of up to three segments, of which one of them is a decreasing function of time, and the others are constant. We analyze the effect of different parameters like the initial temperature, thermal capacitance and the maximum rated speed on the nature and the cost of the optimum solution. We also propose a two-speed solution that approximates the optimal speed curve. This solution was found to achieve a performance close to that of the optimum, and is also easier to implement in real processors.