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DEMOS/MP: The development of a distributed operating system
Author(s) -
Miller Barton P.,
Powell Michael L.,
Presotto David L.
Publication year - 1987
Publication title -
software: practice and experience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 70
eISSN - 1097-024X
pISSN - 0038-0644
DOI - 10.1002/spe.4380170404
Subject(s) - computer science , simple (philosophy) , simplicity , transformation (genetics) , kernel (algebra) , data structure , semantics (computer science) , operating system , programming language , combinatorics , gene , philosophy , chemistry , biochemistry , mathematics , epistemology
The DEMOS/MP operating system has moved from a supercomputer with a simple addressing structure to a network of microcomputers. This transformation was done without significant changes to the semantics of the original DEMOS, i.e. existing DEMOS programs should run on DEMOS/MP. The changes to DEMOS were simplified by the structure of its primitive objects and the functions over those objects. The structure of DEMOS links and processes were the major contributors to the simplicity. The changes made to produce DEMOS/MP involved the internal structure of link, modification to parts of the kernel, and limited changes to the various system processes.