Design and Analysis of a Gracefully Degrading Interleaved Memory System

  • Authors:
  • Kifung C. Cheung;Gurindar S. Sohi;Kewal K. Saluja;Dhiraj K. Pradhan

  • Affiliations:
  • Digital Equipment Corp., Hong Kong;Univ. of Wisconsin, Madison;Univ. of Wisconsin, Madison;Univ. of Massachusetts, Amherst

  • Venue:
  • IEEE Transactions on Computers
  • Year:
  • 1990

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Abstract

The organization of interleaved memories in such a way that faults in the memory system degrade the performance in a graceful manner is studied. Attention is restricted to an interleaved memory system that starts out with 2/sup q/ memory banks and uses a low-order interleaving scheme. The motivation and design objectives of the memory system are described. A new reconfiguration scheme and the design of the hardware needed to implement it are presented. The reconfiguration scheme is evaluated using trace-driven simulation for a number of benchmarks. The ideas presented can easily be extended to other interleaved memory schemes.