The Chimaera reconfigurable functional unit

  • Authors:
  • S. Hauck;T. W. Fry;M. M. Hosler;J. P. Kao

  • Affiliations:
  • -;-;-;-

  • Venue:
  • FCCM '97 Proceedings of the 5th IEEE Symposium on FPGA-Based Custom Computing Machines
  • Year:
  • 1997

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Abstract

By strictly separating reconfigurable logic from their host processor, current custom computing systems suffer from a significant communication bottleneck. In this paper we describe Chimaera, a system that overcomes this bottleneck by integrating reconfigurable logic into the host processor itself with direct access to the host processor's register file, the system enables the creation of multi-operand instruction and a speculative execution model key to high performance, general-purpose reconfigurable computing. It also supports multi-output functions, and utilizes partial run-time reconfiguration to reduce reconfiguration time. Combined, this system can provide speedups of a factor of two or more for general-purpose computing, and speedups of 160 or more are possible for hand-mapped applications.