Edinburgh Research Explorer

Liveness Evaluation of a Cyclo-static DataFlow Graph

Research output: Chapter in Book/Report/Conference proceedingConference contribution

  • Mohamed Benazouz
  • Alix Munier-Kordon
  • Thomas Hujsa
  • Bruno Bodin

Related Edinburgh Organisations

Original languageEnglish
Title of host publicationDAC '13 Proceedings of the 50th Annual Design Automation Conference
Place of PublicationNew York, NY, USA
PublisherACM
Number of pages7
ISBN (Print)978-1-4503-2071-9
DOIs
StatePublished - 2013

Abstract

Cyclo-Static DataFlow Graphs (CSDFG in short) is a formalism commonly used to model parallel applications composed by actors communicating through buffers. The liveness of a CSDFG ensures that all actors can be executed infinitely often. This property is clearly fundamental for the design of embedded applications.

This paper aims to present first an original sufficient condition of liveness for a CSDFG. Two algorithms of polynomial-time for checking the liveness are then derived and compared to a symbolic execution of the graph. An original method to compute close-to-optimal buffer capacities ensuring liveness is also presented and experimentaly tested. The performance of our methods are comparable to those existing in the literature for industrial applications. However, they are far more effective on randomly generated instances, ensuring their scalability for future more complex applications and their possible implementation in a compiler.

Research areas

  • buffer sizing, cyclo-static dataflow graphs, liveness

ID: 24374580