Accession Number : ADA327616

Title :   Opus: A Coordination Language for Multidisciplinary Applications.

Descriptive Note : Contractor rept.,

Corporate Author : INSTITUTE FOR COMPUTER APPLICATIONS IN SCIENCE AND ENGINEERING HAMPTON VA

Personal Author(s) : Chapman, Barbara ; Haines, Matthew ; Mehrotra, Piyush ; Zima, Hans ; Van Rosendale, John

PDF Url : ADA327616

Report Date : JUN 1997

Pagination or Media Count : 28

Abstract : Data parallel languages, such as High Performance Fortran, can be successfully applied to a wide range of numerical applications. However, many advanced scientific and engineering applications are multidisciplinary and heterogeneous in nature, and thus do not fit well into the data parallel paradigm. In this paper we present Opus, a language designed to fill this gap. The central concept of Opus is a mechanism called ShareD Abstractions (SDA). An SDA can be used as a computation server, i.e., a locus of computational activity, or as a data repository for sharing data between asynchronous tasks. SDAs can be internally data parallel, providing support for the integration of data and task parallelism as well as nested task parallelism. They can thus be used to express multidisciplinary applications in a natural and efficient way. In this paper we describe the features of the language through a series of examples and give an overview of the runtime support required to implement these concepts in parallel and distributed environments.

Descriptors :   *DISTRIBUTED DATA PROCESSING, *PARALLEL PROCESSING, *HIGH LEVEL LANGUAGES, COMPUTER PROGRAM DOCUMENTATION, SOFTWARE ENGINEERING, DATA MANAGEMENT, COMPUTER COMMUNICATIONS, SUBROUTINES, OBJECT ORIENTED PROGRAMMING.

Subject Categories : Computer Programming and Software
      Computer Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE