Refactoring and the evolution of Fortran

  • Authors:
  • Jeffrey L. Overbey;Stas Negara;Ralph E. Johnson

  • Affiliations:
  • Department of Computer Science, University of Illinois at Urbana-Champaign, 201 N. Goodwin Ave. MC 258, 61801, USA;Department of Computer Science, University of Illinois at Urbana-Champaign, 201 N. Goodwin Ave. MC 258, 61801, USA;Department of Computer Science, University of Illinois at Urbana-Champaign, 201 N. Goodwin Ave. MC 258, 61801, USA

  • Venue:
  • SECSE '09 Proceedings of the 2009 ICSE Workshop on Software Engineering for Computational Science and Engineering
  • Year:
  • 2009

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Abstract

Successful languages like Fortran keep changing and tend to become more complex, often containing older features that are rarely used. Complexity makes languages harder to use and makes it harder to build tools for them. A refactoring tool can eliminate use of these features from programs; this makes programs easier to understand and maintain, and it can simplify building certain programming tools. This is illustrated by using Photran, a refactoring tool for Fortran, to eliminate global variables from Fortran programs so that they can be used with Adaptive MPI, a version of MPI that performs load balancing.