Software performance estimation strategies in a system-level design tool

  • Authors:
  • Jwahar R. Bammi;Wido Kruijtzer;Luciano Lavagno;Edwin Harcourt;Mihai T. Lazarescu

  • Affiliations:
  • Cadence Design Systems;Philips Research Laboratories;Politecnico di Torino;Cadence Design Systems;Politecnico di Torino

  • Venue:
  • CODES '00 Proceedings of the eighth international workshop on Hardware/software codesign
  • Year:
  • 2000

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Abstract

High-level cost and performance estimation, coupled with a fast hardware/software co-simulation framework, is a key enabler to a fast embedded system design cycle. Unfortunately, the problem of deriving such estimates without a detailed implementation available is difficult.In this paper we describe two approaches to solve software cost and performance estimation problem, and how they are used in an embedded system design environment. A source-based approach uses compilation onto a virtual instruction set, and allows one to quickly obtain estimates without the need for a compiler for the target processor. An object-based approach translates the assembler generated by the target compiler to “assembler-level,” functionally equivalent t C. In both cases the code is annotated with timing and other execution related information (e.g., estimated memory accesses) and is used as a precise, yet fast, software simulation model. We contrast the precision and speed of these two techniques comparing them with those obtainable by a state-of-the-art cycle-based processor model.