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Atune-IL: An Instrumentation Language for Auto-tuning Parallel Applications

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Part of the Lecture Notes in Computer Science book series (LNTCS,volume 5704)


Auto-tuners automate the performance tuning of parallel applications. Three major drawbacks of current approaches are 1) they mainly focus on numerical software; 2) they typically do not attempt to reduce the large search space before search algorithms are applied; 3) the means to provide an auto-tuner with additional information to improve tuning are limited.

Our paper tackles these problems in a novel way by focusing on the interaction between an auto-tuner and a parallel application. In particular, we introduce Atune-IL, an instrumentation language that uses new types of code annotations to mark tuning parameters, blocks, permutation regions, and measuring points. Atune-IL allows a more accurate extraction of meta-information to help an auto-tuner prune the search space before employing search algorithms. In addition, Atune-IL’s concepts target parallel applications in general, not just numerical programs.

Atune-IL has been successfully evaluated in several case studies with parallel applications differing in size, programming language, and application domain; one case study employed a large commercial application with nested parallelism. On average, Atune-IL reduced search spaces by 78%. In two corner cases, 99% of the search space could be pruned.


  • Search Space
  • Tuning Parameter
  • Parallel Application
  • Program Variant
  • Parallel Section

These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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© 2009 Springer-Verlag Berlin Heidelberg

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Schaefer, C.A., Pankratius, V., Tichy, W.F. (2009). Atune-IL: An Instrumentation Language for Auto-tuning Parallel Applications. In: Sips, H., Epema, D., Lin, HX. (eds) Euro-Par 2009 Parallel Processing. Euro-Par 2009. Lecture Notes in Computer Science, vol 5704. Springer, Berlin, Heidelberg.

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-03868-6

  • Online ISBN: 978-3-642-03869-3

  • eBook Packages: Computer ScienceComputer Science (R0)