Parallel Evaluation of Attribute Grammars

  • Authors:
  • A. Klaiber;M. Gokhale

  • Affiliations:
  • -;-

  • Venue:
  • IEEE Transactions on Parallel and Distributed Systems
  • Year:
  • 1992

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Abstract

Examines the generation of parallel evaluators for attribute grammars, targeted to shared-memory MIMD computers. Evaluation-time overhead due to process scheduling and synchronization is reduced by detecting coarse-grain parallelism (as opposed to the naive one-process-per-node approach). As a means to more clearly expose inherent parallelism, it is shown how to automatically transform productions of the form X to Y X into list-productions of the form X to Y/sup +/. This transformation allows for many simplifications to be applied to the semantic rules, which can expose a significant degree of inherent parallelism, and thus further increase the evaluator's performance. Effectively, this constitutes an extension of the concept of attribute grammars to the level of abstract syntax.