Compiling P–GRADE programs for the JGrid architecture∗

Grid systems are large, geographically distributed computational environments. JGrid is a Grid infrastructure, that provides a software environment for such systems. It is built on top of the Java-based Jini technology, which provides a common platform and a service-based lookup system. P–GRADE is an interactive, graphical software development tool, designed to build distributed parallel programs using message passing for communication. It is based on the GRAPNEL hybrid language, which uses graphics to describe communication topology, main control structures and communication actions, while sequential computations can be written in an arbitrary programming language. P–GRADE originally supported the C language using PVM or MPI message passing libraries. This paper gives a description of a compiler package, which implements the GRAPNEL language using the JGrid system as a communication infrastructure, and provides a compiler tool that translates P–GRADE programs to the Java language using this implementation.