Cooperative Boosting: Needy Versus Greedy Power Management

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Provided by: Association for Computing Machinery
Topic: Hardware
Format: PDF
In this paper the authors examine the interaction between thermal management techniques and power boosting in a state-of-the-art heterogeneous processor consisting of a set of CPU and GPU cores. They show that for classes of applications that utilize both the CPU and the GPU, modern boost algorithms that greedily seek to convert thermal headroom into performance can interact with thermal coupling effects between the CPU and the GPU to degrade performance. They first examine the causes of this behavior and explain the interaction between thermal coupling, performance coupling, and workload behavior.
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