Parcel: project for the automatic restructuring and concurrent evaluation of LISP

  • Authors:
  • L. Harrison

  • Affiliations:
  • Univ. at Illinois, Urbana, IL

  • Venue:
  • ICS '88 Proceedings of the 2nd international conference on Supercomputing
  • Year:
  • 1988

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Abstract

Parcel (Project for the Automatic Restructuring and Concurrent Evaluation of Lisp) is an investigation of the problem of compiling Lisp for evaluation on a shared memory multiprocessor. In this paper, we present an overview of the process of compilation in Parcel. This process consists, broadly, of an interprocedural analysis, followed by a function-level restructuring of the lambda expressions that constitute a program. We discuss both of these phases, and illustrate the steps of restructuring with a few examples. A novel representation for s-expressions is employed in Parcel, to facilitate the parallel creation and access of lists; we review this representation, and discuss its implications for the compilation process. We conclude with some preliminary performance measurements of the prototypes of the Parcel compiler and run-time system.