History And Inspiration
The origin for the inspiration of the CPA series of conferences, which began as the OUG-X, and
later WoTUG-X series, is the Theory of Communicating Sequential Processes (CSP) of C. A. R.
Hoare. This gave rise to the design of the occam programming language and the Transputer – an entire
computer on a single chip that could be composed with others to construct scalable systems. The
combination of new theory, programming language, and system architecture, represented an
unprecedented opportunity and challenge to systems engineering methodology. The OUG/ WoTUG/ CPA
conferences have sought to answer that challenge and help meet the opportunity. The proceedings of
the last seventeen have been published by IOS Press, as part of their Concurrent Systems Engineering
Series. They have fostered an extended international research and development community over the
years, and have significantly contributed to many successful commercial applications.
CSP embodies many ideas, all whole-heartedly endorsed by the CPA community. These include the
pursuit of simplicity and security (against error), and the overriding importance of
clear, precise, and consistent, abstraction.