Layer Assignment echniques for Low Energy in Multi-Layered Memory Organisations

  • Authors:
  • E. Brockmeyer;M. Miranda;H. Corporaal;F. Catthoor

  • Affiliations:
  • -;-;Technische University Endhoven;Katholieke University Leuven

  • Venue:
  • DATE '03 Proceedings of the conference on Design, Automation and Test in Europe - Volume 1
  • Year:
  • 2003

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Abstract

Nearly all platforms use a multi-layer memory hierarchy to bridge the enormous latency gap between the large off-chip memories and local register files. However, most of previous work on HW or SW controlled techniques for layer assignment have been mainly focussed on performance. As a result, the intermediate layers have been assigned too large sizes leading to energy inefficiency. In this paper we present a technique that takes advantage of both the temporal locality and limited lifetime of the arrays of the application for minimum energy consumption under layer size constraints. A prototype tool has been developed and tested using two real-life applications of industrial relevance. Following this approach we have been able to half the energy consumed by the memory hierarchy for each of our drivers.