Rational function distribution in computer system architectures: key to stable and secure platforms

Many problems faced in implementing computer-based system applications are related to the deployment of commercially available general-purpose computer system platforms. In the provisioning application software products and services, the platforms have often proven to be the most unreliable, costly, and risk-laden system element. There are historical reasons for the current problems that must be understood in order to map out a path for a future where stable and secure platforms can be provided as reliable commercially available system elements. This paper extends a model of function distribution between various hardware and software levels from a previously published result (Lawson, "Function distribution in computer system architectures," presented at the 3rd Annu. Symp. Computer Architecture, 1976). After a review of the revised model, related principles are "reapplied" to the current situation. Alternative paths that can lead to stable and secure computer platforms via the rational distribution of functions are presented. Finally, the need for as well as the potential impact of autonomic computing is described