Improving the performance of thermally constrained multi core processors using DTM techniques

Extracting high performance from multi-core processors requires increased use of dynamic thermal management techniques. This paper presents performance optimal online thermal management techniques for multi-core processors. The techniques include dynamic voltage and frequency scaling and task-to-core allocation or task migration. The problem formulation includes accurate power and thermal models, as well as leakage dependence on temperature. The effectiveness of our DVFS and task-to-core allocation techniques are demonstrated by numerical simulations. The proposed task to-core allocation method showed a 20.2% improvement in performance over a power-based thread migration approach.