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A comparison of modulo scheduling techniques for software pipelining

  • Peter Pfahler
  • Georg Piepenbrock
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1060)

Abstract

Software pipelining is a well-known and effective technique for generating compact loop schedules for instruction level parallel computers. This paper presents the results of an experimental evaluation and comparison of different scheduling algorithms that generate software pipelines. We implemented these algorithms in an uniform retargetable compiler environment that can be instantiated by providing target machine descriptions. This environment and a carefully designed benchmark suite enable us to perform a fair comparison of the implemented techniques. We evaluate well-known non-hierarchical and hierarchical schedulers and a hybrid technique developed in our group. Our analysis indicates that scheduling algorithms based on variations of the “classical” non-hierarchical modulo scheduling technique will probably yield the most effective software pipelines.

Keywords

Software Pipelining Instruction Level Parallelism Superscalar Processors VLIW 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1996

Authors and Affiliations

  • Peter Pfahler
    • 1
  • Georg Piepenbrock
    • 1
  1. 1.Universität-GH PaderbornPaderbornGermany

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