CAREL: A Visible Distributed Lisp

Reference: Davies, B. CAREL: A Visible Distributed Lisp. March, 1986.

Abstract: CAREL is a Lisp implementation designed to be a high-level interactive systems programming language for a distributed-memory multiprocessor. CAREL insulates the user from the machine language of the multiprocessor architecture, but still makes it possible for the user to specify explicitly the assignment of tasks to processors in the multiprocessor network. CAREL has been implemented to run on a TI Explorer Lisp machine using Stanford's CARE multiprocessor simulator. CAREL is more than a language: real-time graphical displays provided by the CARE simulator make CAREL a novel graphical programming environment for distributed computing. CAREL enables the user to create programs interactively and then watch them run on a network of simulated processors. As a CAREL program executes, the CARE simulator graphically displays the activity of the processors and the transmission of data through the network. Using this capability, CAREL has demonstrated its utility as an educational tool for multiprocessor computing.

Notes: STAN-CS-86-1126 15 pages.

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