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Hierarchical approach to computer system integrity

J. J. Donovan, S. E. Madnick
1975 IBM Systems Journal  
In this paper, we show that a hierarchically structured operating system, such as produced by a virtual machine system, that combines a virtual machine monitor with several independent operating systems  ...  ( V M M~O S ) , provides substantially better software security than a conventional two-level multiprogramming operating system approach.  ...  ACKNOWLEDGMENT The authors wish to acknowledge the suggestions offered by the reviewers of this paper.  ... 
doi:10.1147/sj.142.0188 fatcat:mqjux7hykzhspjih3sjllmvlki

Functional structure of IBM virtual storage operating systems, Part III: Architecture and design of DOS/VS

J. P. Birch
1973 IBM Systems Journal  
Where re-entrance is rot practical, a gating-locking structure is used to lock a specific, portion of the Supervisor while paging is in progress.  ...  The DOS/VS method is based on studies showing that, with this method, the total number of Supervisor instruc- tions required to execute a job stream in a multiprogramming environment is lower than the  ... 
doi:10.1147/sj.124.0401 fatcat:2yg2dlyx2zbbfiyf6lgjphmpje

Virtual storage and virtual machine concepts

R. P. Parmelee, T. I. Peterson, C. C. Tillman, D. J. Hatfield
1972 IBM Systems Journal  
Describes the structure of the supervisor programs of four time-sharing systems employing relocation: UMMPS, CP-67, TSS/360, and MULTICS.  ...  Defines a virtual machine in terms of minimal criteria: (1) the method of execution of nonprivileged in- structions in supervisor and problem state must be roughly equivalent for a large subset of the  ... 
doi:10.1147/sj.112.0099 fatcat:peys2o3jyvcgvjb62erlopcczy

A real time executive system for manned spaceflight

J. L. Johnstone
1967 Proceedings of the November 14-16, 1967, fall joint computer conference on - AFIPS '67 (Fall)  
The second level of the two-level mUltiprogramming structure discussed in the Introduction of the paper is found in the functions of supervisors.  ...  A supervisor further inhances multiprogramming in that it consists of one or more programming elements, called functions.  ... 
doi:10.1145/1465611.1465640 dblp:conf/afips/Johnstone67 fatcat:6yb3iyxjdbfopg23okcbsdptzi

A nuclear data system

D. A. Bromley, M. W. Sachs, J. S. Birnbaum
1969 Revue de Physique Appliquée  
A multiprogramming supervisor enables several independent jobs to be run simultaneously, with inter-job communication facilities to enable analysis of data to be carried out concurrently with its acquisition  ...  The software system makes possible the processing of all incoming events by Fortran programs.  ...  A multiprogramming supervisor enables several independent jobs to be run simultaneously, with inter-job communication facilities to enable analysis of data to be carried out concurrently with its acquisition  ... 
doi:10.1051/rphysap:0196900402011600 fatcat:fexeap3swjfo3amnommig3omeq

Multiprogramming

Thomas B. Steel
1968 Proceedings of the December 9-11, 1968, fall joint computer conference, part I on - AFIPS '68 (Fall, part I)  
It is likely that use of a firmware approach to multiprogramming supervisors by placing them in read-fast, write-slow storage units will provide the last big reduction in overhead cost.  ...  INTRODUCTION "Multiprogramming'! is the label given to the concept of a dynamic sharing of the resources of a given computer system among two or more programs.  ... 
doi:10.1145/1476589.1476607 dblp:conf/afips/Steel68 fatcat:joimon6wzna3fiefzldvqsbdwm

Time-sharing in the IBM system/360

Charles T. Gibson
1966 Proceedings of the April 26-28, 1966, Spring joint computer conference on XX - AFIPS '66 (Spring)  
ACKNOWLEDGMENTS The author wishes to recognize the original logical and systems design work on the Model 67 and  ...  CONFIGURATION Bus Structure A sample configuration is shown in Fig. 1 . The most significant part of the equipment is the shared memories.  ...  An ability on the part of the control program to put a problem program in ready status without honoring the complete storage claims and without the necessity of altering the addressing structure of the  ... 
doi:10.1145/1464182.1464190 dblp:conf/afips/Gibson66 fatcat:ctyd4lhkjbaozhz5eqqotv74p4

Page 27 of Journal of Research and Practice in Information Technology Vol. 10, Issue 1 [page]

1978 Journal of Research and Practice in Information Technology  
DIJKSTRA, E.W. (1968b), “The Structure of theTHE’ - Multiprogramming System”, Comm. A.C.M., Vol. 11, No. 3, 1 p 341.  ...  In the 1971 November issue of ACJ I wrote a review of the book by A.T. Berztiss (“Data Structures: Theory and Practice’’) which I found at the time overly theoretical.  ... 

Virtualization Effects on The Security

2020 Journal of science and technolgy  
Virtualization is a technology which provides the efficient and effective usage of computing system .the computing system is not only a single personnel system but also a system consisting of multiprocessors  ...  same resources with the existing infra structure.  ...  Using the same rationale as In A above, the smaller the degree of multiprogramming (I.e., k<m), the smaller the probability of a security violation.  ... 
doi:10.46243/jst.2020.v6.i1.pp01-08 fatcat:uuhpdjnwvbed7i37gxeuttnrry

The design of IBM OS/VS2 release 2

A. L. Scherr
1973 Proceedings of the June 4-8, 1973, national computer conference and exposition on - AFIPS '73  
Overlay structures have been eliminated, and the use of the Overlay Supervisor, LINK, and XCTL services has been removed with a decrease in I/O activity as well as CPU time.  ...  In the performance area, the complexity of a multiprogramming system is generally increased in the MP environment; however, the facilities for increased multiprogramming efficiency in Release 2 go a long  ... 
doi:10.1145/1499586.1499686 dblp:conf/afips/Scherr73 fatcat:u5qvesxsy5aepe2leasn6vwrjq

The instrumentation of multics

Jerome H. Saltzer, John W. Gintell
1970 Communications of the ACM  
The specific goals of Multics are described in a series of papers written in 1965 1 ; briefly, the objective is to create a computer operating system centered around the ability to share information in  ...  This paper reports an array of measuring tools devised to aid in the implementa tion of a prototypE' computer utility.  ...  Acknowledgements Almost everyone who contributed to the design of Multics has contributed at least one suggestion toward its instrumentation.  ... 
doi:10.1145/362705.362711 fatcat:7pdy2s55w5fa7gwgu5gs5n26du

The instrumentation of multics

Jerome H. Saltzer, John W. Gintell
1969 Proceedings of the second symposium on Operating systems principles - SOSP '69  
The specific goals of Multics are described in a series of papers written in 1965 1 ; briefly, the objective is to create a computer operating system centered around the ability to share information in  ...  This paper reports an array of measuring tools devised to aid in the implementa tion of a prototypE' computer utility.  ...  Acknowledgements Almost everyone who contributed to the design of Multics has contributed at least one suggestion toward its instrumentation.  ... 
doi:10.1145/961053.961104 dblp:conf/sosp/SaltzerG69 fatcat:kyidfpv33redxmm3nqf565nm4u

The instrumentation of multics

Jerome H. Saltzer, John W. Gintell
1969 Proceedings of the second symposium on Operating systems principles - SOSP '69  
The specific goals of Multics are described in a series of papers written in 1965 1 ; briefly, the objective is to create a computer operating system centered around the ability to share information in  ...  This paper reports an array of measuring tools devised to aid in the implementa tion of a prototypE' computer utility.  ...  Acknowledgements Almost everyone who contributed to the design of Multics has contributed at least one suggestion toward its instrumentation.  ... 
doi:10.1145/961100.961104 fatcat:rmnxqiqanfhpdaj2an67cgtq4u

Interactive Saturn flight program simulator

J. H. Jacobs, T. J. Dillon
1970 IBM Systems Journal  
Because the graphics program is based ona iree-structure organi- zation, the analyst has available at each stage of the simulation a hierarchy of options that he selects either through light pen or the  ...  Modularly structured, the mission program consists of two basic program packages totaling about 28K words in the flight computer: application modules and a control program.  ... 
doi:10.1147/sj.92.0145 fatcat:ygw2k7t4h5c4jgk3etpj4xq4hi

Page 2 of Boondocks Vol. 2, Issue 43 [page]

1973 Boondocks  
The detailed strategy of this record structure has been published [19, 20).  ...  Major costs, at present, are center- ed around the large amount of memory needed to run a multiprogram system and the large amount of disk space needed for over one million medical records.  ... 
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