An Estelle Compiler for Multiprocessor Platforms

Efficient implementation of communication software is of critical importance for high-speed networks. Parallelism can improve the runtime performance of implementations gained by code generation. Therefore, we have modified an existing Estelle compiler to run under OSF/1. It exploits parallelism not only in the actions of the FSMs, but also in the runtime system of the protocol stack

Hardware/Software Co-design of Communication Protocols

An important aspect in providing high performance distributed systems such as multimedia systems is the combined use of hardware and software in the end systems. System design techniques should allow hardware/software co-design to integrate both means of implementation. In this paper, we show how the standardized formal language Estelle can be used to facilitate co-design. The system will first be designed in Estelle. At the point in time of final decision on which parts to implement in software and which in hardware, the original specification will be split into several partial specifications. The software parts are translated into C code, while the hardware parts are translated into VHDL code for further analysis and development. We present a tool environment which supports the protocol developer in the design and implementation process. A simple Video-on-Demand example shows the usefulness of the tool environment

On the Suitability of Estelle for Multimedia Systems

Formal Description Techniques have been widely used for the specification of traditional networked applications. They have not been applied to the specification of new applications such as multimedia systems yet. In this paper, we examine the FDT Estelle with respect to its suitability for multimedia system specification and automatic derivation of efficient implementations. We show that it is possible to specify certain aspects of multimedia systems, but that Estelle is not sufficient for others. The derived implementations often perform badly. We show the reasons and propose to use a slightly modified Estelle syntax and semantics to solve the problems. The implemented solution was tested successfully

An Estelle Compiler for Multiprocessor Platforms

this paper, we describe a more efficient runtime system for one of them, the PET/DINGO, which avoids some of the weak points of the original runtime system [12]. It makes use of parallelism and is intended to run under the operating system OSF/