This paper describes an experimental message‐driven programming system for fine‐grain
multicomputers. The initial target architecture is the J‐machine designed at MIT. This
machine combines a unique collection of architectural features that include fine‐grain
processes, on‐chip associative memory; and hardware support for process synchronization.
The programming system uses these mechanisms via a simple message‐driven process
model that blurs the distinction between processes and messages: messages correspond to …