Distributed operating system: Difference between revisions

Revision as of 06:09, 24 March 2010

Revision as of 01:05, 25 March 2010

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==== Aboriginal Distributed Computing ====

'''The DYSEAC'''<ref>Leiner, A. L. 1954. System Specifications for the DYSEAC. J. ACM 1, 2 (Apr. 1954), 57-81.</ref> (1954)

One of the first solutions to these new questions was the [[DYSEAC]], a self-described general-purpose [[Synchronization (computer science)|synchronous]] computer; but at this point in history, exhibited signs of being much more than general-purpose. In one of the earliest publications of the [[ACM]], in April of 1954, a researcher at the [[National Bureau of Standards]] – now the National [[nist|Institute of Standards and Technology]] ([[nist|NIST]]) – presented a detailed implementation design specification of the DYSEAC. Without carefully reading the entire specification, one could be misled by summary language in the introduction, as to the nature of this machine. The initial section of the introduction advises that major emphasis will be focused upon the requirements of the intended applications, and these applications would require flexible communication. However, suggesting the external devices could be typewriters, [[Magnetic storage|magnetic medium]], and [[Cathode ray tube|CRTs]], and with the term “[[Input/output|input-output operation]]” used more than once, could quickly limit any paradigm of this system to a complex centralized “ensemble.” Seemingly, saving the best for last, the author eventually describes the true nature of the system.

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==== Multi-programming abstraction ====

'''The Lincoln TX-2'''<ref>Forgie, J. W. 1957. The Lincoln TX-2 input-output system. In Papers Presented At the February 26-28, 1957, Western Joint Computer Conference: Techniques For Reliability (Los Angeles, California, February 26 - 28, 1957). IRE-AIEE-ACM '57 (Western). ACM, New York, NY, 156-160.</ref> (1957)

Described as an input-output system of experimental nature, the Lincoln TX-2 placed a premium on flexibility in its association of simultaneously operational input-output devices. The design of the TX-2 was modular, supporting a high degree of modification and expansion, as well as flexibility in operating and programming of its devices. The system employed The Multiple-Sequence Program Technique.