Despite the rapid advances i n development of parallel processing systems in recent years, the progress i n software development t o effectively utilize the parallel processing systems has been relatively slow. I n this paper, a n object-oriented approach t o software development for parallel processing systems i s presented. This approach is based on a computation model which incorporates the functional paradigm in the objectoriented paradigm and allows exploitation of massive parallelism without sacrificing the effectiveness of the object-oriented paradigm. T h e issues related t o the development processes are discussed.

Despite the rapid advances i n development of parallel processing systems in recent years, the progress i n software development t o effectively utilize the parallel processing systems has been relatively slow. I n this paper, a n object-oriented approach t o software development for parallel processing systems i s presented. This approach is based on a computation model which incorporates the functional paradigm in the objectoriented paradigm and allows exploitation of massive parallelism without sacrificing the effectiveness of the object-oriented paradigm. T h e issues related t o the development processes are discussed.

In distributed real-time computing systems for complicated applications like command, control, communications and intelligence, time constraints are severe and adaptability is required to provide high availability and survivability of computing resources. In this paper, an object-oriented approach to software design for distributed real-time systems is presented. In order to support adaptability of the software system to a dynamically changing environment , our approach supports multi-versions of a method definition. Our design approach is illustrated with a hypothetical airbase defense simulation system.