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GPU Computing Gems Jade Edition by Wen-mei W. Hwu

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Chapter 35

Dynamic Load Balancing Using Work-Stealing

Daniel Cederman and Philippas Tsigas

In this chapter, we present a methodology for efficient load balancing of computational problems that can be easily decomposed into multiple tasks, but where it is hard to predict the computation cost of each task, and where new tasks are created dynamically during runtime. We present this methodology and its exploitation and feasibility in the context of graphics processors. Work-stealing allows an idle core to acquire tasks from a core that is overloaded, causing the total work to be distributed evenly among cores, while minimizing the communication costs, as tasks are only redistributed when required. This will often lead to higher throughput than using ...

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