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The Journal of Supercomputing

, Volume 59, Issue 2, pp 636–657 | Cite as

Efficient datapath merging for the overhead reduction of run-time reconfigurable systems

  • Mahmood FazlaliEmail author
  • Ali Zakerolhosseini
  • Georgi Gaydadjiev
Article

Abstract

High latencies in FPGA reconfiguration are known as a major overhead in run-time reconfigurable systems. This overhead can be reduced by merging multiple data flow graphs representing different kernels of the original program into a single (merged) datapath that will be configured less often compared to the separate datapaths scenario. However, the additional hardware introduced by this technique increases the kernels execution time. In this paper, we present a novel datapath merging technique that reduces both the configuration and execution times of kernels mapped on the reconfigurable fabric. Experimental results show up to 13% reduction in the configuration and execution times of kernels from media-bench workloads, compared to previous art on datapath merging. When compared to conventional high-level synthesis algorithms, our proposal reduces kernels configuration and execution times by up to 48%.

Keywords

Reconfigurable computing Run-time reconfigurable systems Datapath merging 

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Mahmood Fazlali
    • 1
    • 2
    Email author
  • Ali Zakerolhosseini
    • 1
  • Georgi Gaydadjiev
    • 2
  1. 1.Department of Computer EngineeringShahid Beheshti University G.CTeheranIran
  2. 2.Computer Engineering Lab.Delft University of TechnologyDelftThe Netherlands

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