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Laws of software evolution revisited [chapter]

M. M. Lehman
1996 Lecture Notes in Computer Science  
Data obtained during a 1968 study of the software process [leh69] led to an investigation of the evolution of OS/360 [leh85] and and, over a period of twenty years, to formulation of eight Laws of Software  ...  listing are reprinted in [leh85]  ...  Figure 1 . 1 The growth of OS/360 Figure 2 . 2 Figure 2 plots system size modules as a function of the RSN.  ... 
doi:10.1007/bfb0017737 fatcat:qwj33pts65gevnqnb4iemz24ka

A model for a generalized data access method

Randall L. Frank, Koichi Yamaguchi
1974 Proceedings of the May 6-10, 1974, national computer conference and exposition on - AFIPS '74  
to this the variations of the above used by various systems that run under the control of OS/360, such as IBM's data base management system IMS/360, there exists almost a countless number of ways to access  ...  In the operating system OS/360 alone there exist multiple ways of accessing sequential data (BSAM, QSAM, BPAM), indexed sequential data (BISAM, QISAM) and directly addressable data (BDAM). 4 If one adds  ... 
doi:10.1145/1500175.1500185 dblp:conf/afips/FrankY74 fatcat:yfxyaol2mzf6hn7c2hyiwl3nva

Do physicists need software engineering?

F. James
1986 Computer Physics Communications  
We attempt to describe the situation in software development which led to the invention of various techniques now known collectively as Software Engineering.  ...  This in turn leads us to consider to what extent real computer users, and in particular computational physicists, could profit from the use of these techniques.  ...  IBM OS/360 cent criticism of the project indicates however that In 1964, Frederick Brooks became project the "chief programmer team" concept is no longer manager for the writing of OS/360, one of the considered  ... 
doi:10.1016/0010-4655(86)90065-2 fatcat:iw5fse6n4jhmjj3x2ujmgs24xu

Penetrating an operating system: a study of VM/370 integrity

C. R. Attanasio, P. W. Markstein, R. J. Phillips
1976 IBM Systems Journal  
The first case concerned the OS/360 use of self-modifying channel programs in its ISAM access method”.  ...  Hence, the support of the OS/360 ISAM access method could be controlled, or, if desired, denied to all users.  ... 
doi:10.1147/sj.151.0102 fatcat:lggagrzisvel7ayhhdyfrnly5i

Enterprise Systems Architecture/370: An architecture for multiple virtual space access and authorization

C. A. Scalzi, A. G. Ganek, R. J. Schmalz
1989 IBM Systems Journal  
He was part of the initial design team for Operating System/360 (OS/360).  ...  He managed the design and development of the Linkage Editor E, the primary control program improvement program, he was OS/360 Scheduler design and development manager, and OS/360 design manager.  ... 
doi:10.1147/sj.281.0015 fatcat:pf5bebf74feipnz555al4wcuqe

Page 340 of IBM Systems Journal Vol. 38, Issue 2-3 [page]

IBM Systems Journal  
REPRINTED FROM IBM SYSTEMS JOURNAL, VOL 12, NO 4, 1973; © 1973, 1999 Presented are early developments of storage management tech- niques, particularly those used in OS/360.  ...  Functional structure of IBM virtual storage operating systems Part |: Influences of dynamic address translation on operating system technology by M. A. Auslander and J. F.  ... 

The Past, Present, and Future for Software Architecture

P. Kruchten, H. Obbink, J. Stafford
2006 IEEE Software  
Acknowledgments We thank our colleagues in IFIP Working Group 2.10 on Software Architecture for their input, particularly those who participated in the discussions at our August 2005 meeting in Krapi,  ...  This is the subject of software architecture. Architecture is different from engineering. As an example of what I mean, take a look at OS/360. Parts of OS/360 are extremely well coded.  ...  What happens is that specifications of software are regarded as functional specifications. We only talk about what it is we want the program to do.  ... 
doi:10.1109/ms.2006.59 fatcat:g37yginxuzfhnio4akbyam45qa

The utility of a digital simulation language for ecological modeling

R. D. Brennan, C. T. de Wit, W. A. Williams, E. V. Quattrin
1970 Oecologia  
The final example considers the management of a postulated buffalo herd in which the dynamics of the herd population and composition by sex and age is combined with various strategies to control its size  ...  This paper illustrates the application of one of these programs, S/360 Continuous System Modeling Program (S/360 CSMP), to four systems of graduated complexity.  ...  by IBM for its System/360 Computer System operating under OS/360 on systems with 128K core memory or larger. 114 1%.  ... 
doi:10.1007/bf00377096 pmid:28309575 fatcat:6l6sgchmqraytdrukue56ff2vy

The evolution of the laws of software evolution

Israel Herraiz, Daniel Rodriguez, Gregorio Robles, Jesus M. Gonzalez-Barahona
2013 ACM Computing Surveys  
We also address the current state of affairs about the validity of the laws, how they are perceived by the research community, and the developments and challenges that are likely to occur in the coming  ...  However, despite such a long history, many research questions still remain open, and controversial studies about the validity of the laws of software evolution are common.  ...  Lehman extracted his conclusions mainly from the IBM OS/360 operating system project [Lehman 1980 ].  ... 
doi:10.1145/2543581.2543595 fatcat:3be3ya67wfhphdkd476yckoh4i

Page 286 of IBM Systems Journal Vol. 16, Issue 3 [page]

IBM Systems Journal  
Conroy, Computer System Performance, McGraw-Hill Book Company, New York (1975), Chapter 8: ‘“‘The IBM OS/360 Operating System.” . M. A. Auslander and J. F.  ...  Birch, “Functional structure of IBM virtual storage operating sys- tems—Part III: Architecture and design of DOS/VS,” /BM Systems Jour- nal 12, No. 4, 401-411 (1973). .  ... 

MARC: MVS archival storage and recovery program

J. P. Considine, J. J. Myers
1977 IBM Systems Journal  
The concept was implemented in OS/360 and formed the basis for the migration scheme.  ...  The OS/360 data migration and staging work was done at the IBM Research Division laboratory at San Jose.  ... 
doi:10.1147/sj.164.0378 fatcat:t4xplvqaevb2jdqsxrv7ckutti

Page 365 of IBM Systems Journal Vol. 22, Issue 4 [page]

IBM Systems Journal  
He worked on graphics application programs for the IBM 1130/2250 and on enhancements to the OS/360 Graphics Access Method.  ...  Weingarten joined IBM in 1969 in the former IBM New York Development Center, where his assignment was on the OS/360 linkage editor. He joined the U.S. Army in 1970.  ... 

A programming process architecture

R. A. Radice, N. K. Roth, A. C. O'Hara, W. A. Ciarfella
1985 IBM Systems Journal  
The code is written either in an in-house high-level language called PLs or in Basic Assembler Language (BAL). A fair amount of the code base has been around since the beginnings of os/360.  ...  Data structures are defined to the lowest level of detail.  ... 
doi:10.1147/sj.242.0079 fatcat:rxgkriapyrbp5ajhnvfpjhaq5a

The Virtual Telecommunications Access Method: A Systems Network Architecture perspective

H. R. Albrecht, K. D. Ryder
1976 IBM Systems Journal  
VTAM initial objectives 54 available on OS/360 as the replacement for QTAM, providing a queued access method with superior performance, function, recovery, and device support, including support for binary  ...  Note that the SNA structure provides for another set of trans- mission control functions called network control.” The VTAM transmission control layer implementation provides no such functions.  ... 
doi:10.1147/sj.151.0053 fatcat:c6d7pqe7zrbjbkmvmkcyoitgtq

Metrics and laws of software evolution-the nineties view

M.M. Lehman, J.F. Ramil, P.D. Wernick, D.E. Perry, W.M. Turski
Proceedings Fourth International Software Metrics Symposium  
Preliminary conclusions based on a study of a financial transaction system, FW, are outlined and compared with those reached during the earlier OS/360 study.  ...  This observation, first recorded in the early 70s during an extended study of OS/360 evolution, was recently captured in a FEAST hypothesis; a hypothesis being studied in on-going twoyear project, FEAST  ...  , investigation of OS/360 not having yet been reopened.  ... 
doi:10.1109/metric.1997.637156 dblp:conf/metrics/LehmanRWPT97 fatcat:5juge3whcba3jc3vqgtn33kkt4
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