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DATE
2009
IEEE

Performance optimal speed control of multi-core processors under thermal constraints

9 years 6 months ago
Performance optimal speed control of multi-core processors under thermal constraints
Abstract—Advances in chip-multiprocessor processing capabilities has led to an increased power consumption and temperature hotspots. Maintaining the on-chip temperature is important from the power reduction and reliability considerations. Achieving highest performance while maintaining the temperature constraint is a challenge. We develop analytical solutions for the optimal control of frequencies for each core in a chipmultiprocessor. The objective is to reduce the makespan or the latest task completion time of all tasks. We show that the optimal frequency policy is bang-bang when the temperature constraint is not active and is exponential when the temperature constraint is active. We show that there is a significant improvement in overall throughput with our proposed solution and yet all cores operate under the thermal maximum.
Vinay Hanumaiah, Sarma B. K. Vrudhula, Karam S. Ch
Added 20 May 2010
Updated 20 May 2010
Type Conference
Year 2009
Where DATE
Authors Vinay Hanumaiah, Sarma B. K. Vrudhula, Karam S. Chatha
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