Visual Programming

Introduction and Objectives In the design and implementation of parallel programs the user is often encouraged to specify computational issues by drawing graphs and to take these drawings into consideration when he wants to track the run-time behaviour of the application. A good example of such a computational issue can be the process communication graph. It's no use to make these drawings with paper and pencil when it is possible to draw them by using comfortable and intelligent visual programming tools. The objectives of the task were the development of graphical notations, methodologies and high-level tools for parallel program design. We have considered PVM (Parallel Virtual Machine) [12] system as the target platform of our parallel applications in order to support portability of our design tools 1 . Tools developed can be divided into two main groups: ffl GRAPNEL tools: GRAPNEL [1][2] is a high-level visual parallel p