Glypnir-A Programming Language for Illiac IV GLYPNIR is one of the earliest existing languages designed for programming the Illiac IV computer. The syntax of the language is based on ALGOL 60, but has been extended to allow the programmer explicitly to specify the parallelism of his algorithm in terms of 64-word vectors. This paper describes the characteristics, goals and philosophy of the language, and discusses some of the problems associated with parallel computer architectures. CACM March, 1975 Lawrie, D. H. Layman, T. Baer, D. Randal, J. M. GLYPNIR, Illiac IV, Programming language, parallel computation, parallel architecture 4.2 4.21 4.22 CA750303JB January 9, 1978 4:57 PM 2785 4 2785 2785 4 2785 2876 4 2785 2433 5 2785 2685 5 2785 2785 5 2785 2785 5 2785 2785 5 2785