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On Simplifying Placement and Routing by Extending Coarse-Grained Reconfigurable Arrays with Omega Networks

  • Ricardo Ferreira
  • Alex Damiany
  • Julio Vendramini
  • Tiago Teixeira
  • João M. P. Cardoso
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5453)

Abstract

Most reconfigurable computing architectures suffer from computationally demanding Placement and Routing (P&R) steps which might hamper their use in contexts requiring dynamic compilation (e.g., to guarantee application portability in embedded systems). Bearing in mind the simplification of P&R steps, this paper presents and analyzes a coarse-grained reconfigurable array extended with global Omega Networks. We show that integrating one or two Omega Networks in a coarse-grained array simplifies the P&R stage with both low hardware resource overhead and low performance degradation (18% for an 8×8 array). The experimental results included permit to compare the coarse-grained array with one or two Omega Networks with a coarse-grained array based on a grid of processing elements with neighbor connections. When comparing the execution time to perform the P&R stage needed for the two arrays, we show that the array using two Omega Networks needs a far simple P&R which for the benchmarks used completed on average in about 20× less time.

Keywords

Execution Time IEEE Computer Society Neighbor Connection Area Cost Extra Level 
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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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Ricardo Ferreira
    • 1
  • Alex Damiany
    • 1
  • Julio Vendramini
    • 1
  • Tiago Teixeira
    • 1
  • João M. P. Cardoso
    • 2
  1. 1.Dep. de InformáticaUniversidade Federal VicosaVicosaBrazil
  2. 2.Dep. de Engenharia Informática, Faculdade de EngenhariaUniversidade do PortoPortoPortugal

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