An Overview of the PIVOT Environment for Program Restructuring

The objective of PIVOT, a program ParallelizatIon and VisualizatiOn environmenT, described in this paper is to provide a programming environment that facilitates restructuring of programs for parallelization. The environment supports a range of facilities, including visual and textual forms of specifications for code transformations, automatic generation of transformers from specifications, interactive and undo facilities for code transformations, multiparadigm program visualization, and multi-level browsing functions. 1. Introduction Parallel architectures use various forms of parallelism to provide users with increased computational power. Programmers depend on parallelizing compilers to enhance or expose parallelism in the sequential code and to generate highly parallelized code. The basic problems when applying transformations include deciding which transformations to apply, the order in which to apply them, and the parts of a program that should be transformed. Another problem i..