Along with mpl, the intrinsic parallel languages for MasPar's computers. AMPL and mpl are parallel variants of C. Ampl is actually now a gcc port.
["AMPL: Design, Implementation and Evaluation of a Multiprocessing Language", R. Dannenberg, CMU 1981].
["Loglan Implementation of the AMPL Message Passing System", J. Milewski SIGPLAN Notices 19(9):21-29 (Sept 1984)].
[Are these the same language?]