Remote job entry and on-line reactivation of a suspended program

Innes, Donald R (1969) Remote job entry and on-line reactivation of a suspended program. MSc(R) thesis, University of Glasgow.

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The thesis describes certain facilities which have been provided to offer computer users new ways of developing and executing programs. They have been implemented in the RODON 3 operating system for the KDF 9 computer which is based on a segmented supervisor and incorporates a file storage system. An on-line system, created by allowing certain of the supervisor segments to be activated from the KDF 9 console, was extended to form the COTAN multi-access system by connecting the KDF 9 to a PDP 8 computer and a graphical display. In the multi-access system there were facilities for inputting data and manipulating and editing files. Although these facilities could be used to construct the text of a program, it could only be compiled and executed by entering a job in the batch processing stream of the background system. Now the user, from an on-line teletype, is able to insert an entry into a job queue which is ordered so that the shortest jobs have the highest priority. The job scheduler of the background system was modified to alternately run one job from the batch input and one from the job queue. When required compilation may be semi-conversational with success message being returned to the teletype. If the user wishes to interact with a program while it is being run, its execution in batch processing mode is suspended and it is written to disc in a standard manner. At any time following this action it can be reactivated and its execution continued in a fully conversational mode. These innovations are facilitated by two supervisor segments which perform the functions of remote job entry and on-line reactivation of a suspended program.

Item Type: Thesis (MSc(R))
Qualification Level: Masters
Additional Information: Adviser: D C Gilles
Keywords: Computer science
Date of Award: 1969
Depositing User: Enlighten Team
Unique ID: glathesis:1969-73891
Copyright: Copyright of this thesis is held by the author.
Date Deposited: 14 Jun 2019 08:56
Last Modified: 14 Jun 2019 08:56

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