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2010
IEEE

Exploiting More Parallelism from Applications Having Generalized Reductions on GPU Architectures

8 years 3 months ago
Exploiting More Parallelism from Applications Having Generalized Reductions on GPU Architectures
Reduction is a common component of many applications, but can often be the limiting factor for parallelization. Previous reduction work has focused on detecting reduction idioms and parallelizing the reduction operation by minimizing data communications or exploiting more data locality. While these techniques can be useful, they are mostly limited to simple code structures. In this paper, we propose a method for exploiting more parallelism by isolating the reduction from users of the intermediate results. The other main contribution of our work is enabling the parallelization of more complex reduction codes, including those that involve the use of intermediate reduction results. The proposed transformations are often implemented by programmers in an ad-hoc manner, but to the best of our knowledge no previous work has been proposed to automate these transformations for many-core architectures. We show that the automatic transformations can result in significant speedup compared to the ...
Xiao-Long Wu, Nady Obeid, Wen-Mei Hwu
Added 26 Jan 2011
Updated 26 Jan 2011
Type Journal
Year 2010
Where IEEECIT
Authors Xiao-Long Wu, Nady Obeid, Wen-Mei Hwu
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