Our system aims to support a programming model that is a flexible hybrid of the data-parallel, language-oriented, HPF style, and the established and popular, library-oriented, SPMD style. We refer to this model as HPspmd.
Primary goals of the current project include
A major thrust of the proposed work will be on researching compiler (or preprocessor) support for our extended languages, and development of exemplar interfaces from the new languages to a subset of the libraries mentioned above. The research aspects of the proposed work involve investigation of compiler optimizations and safety checks peculiar to the new languages, extensions to the basic language model to improve support of irregular problems, and design of attractive class-library bindings for the various SPMD environments involved in the project.
The next four subsections overview the language extensions we are investigating, the libraries we will study, issues concerning low-level MPI programming in the proposed environment, and the parallel machine model.