IBM Systems Journal

Issue 3 • 1972

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Displaying Results 1 - 7 of 7
  • Channel and direct access device architecture

    Publication Year: 1972, Page(s):186 - 199
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1661 KB)

    The effective use of direct access devices in System/360 was limited by channel and device architecture. Because System/370 was expected to continue with the same dependence on DASD, the problems were defined and solutions were developed. With the assistance of a simulator used during evaluation, the block multiplexer channel proposal was selected. This effort thus provided the basis of the block ... View full abstract»

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  • Uses of virtual storage systems in a scientific environment

    Publication Year: 1972, Page(s):200 - 218
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1819 KB)

    This paper described some of the uses to which the virtual storage systems are being put at the IBM Thomas J. Watson Research Center. In addition to these relatively large-scale uses of the systems, a number of people are using the systems primarily, or even exclusively, for editing and document preparation. The interactive nature of these systems commends them to this application, and the presenc... View full abstract»

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  • Cost-benefit evaluation of scientific computing services

    Publication Year: 1972, Page(s):219 - 233
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1654 KB)

    Evaluation techniques for measuring computing system efficiency continue to be refined as the variety of systems and their applications expand. System measures often tacitly assume that the highest overall efficiency is achieved when a certain critical system parameter, such as throughput, is optimized. Recognizing that these measures may be quite valid when the computing system essentially models... View full abstract»

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  • A guide to programming tools and techniques

    Publication Year: 1972, Page(s):234 - 254
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1759 KB)

    Programming has become a major concern within corporate organizations because programs and programming systems now assist in the day-to-day conduct and management of most corporate activities. Common to all programming departments or groups is the rising cost of program development and maintenance. As a result of this increasing concern, programs and techniques have been formulated to facilitate d... View full abstract»

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  • Queuing simulation using a random number generator

    Publication Year: 1972, Page(s):255 - 271
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1610 KB)

    Partly by tutorial and partly by example, the use of random number generator techniques for system simulation has been introduced. To gain confidence and to validate results of simulations, comparisons have been made with analytical system performance evaluations. A test of reasonableness and a variation of the problem as a result of the test also illustrate some principles underlying the random n... View full abstract»

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  • Authors

    Publication Year: 1972, Page(s):272 - 273
    IEEE is not the copyright holder of this material | PDF file iconPDF (1070 KB)
    Freely Available from IEEE
  • Abstracts

    Publication Year: 1972, Page(s):274 - 275
    IEEE is not the copyright holder of this material | PDF file iconPDF (868 KB)
    Freely Available from IEEE

Aims & Scope

Throughout its history, the IBM Systems Journal has been devoted to software, software systems, and services, focusing on concepts, architectures, and the uses of software.

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Editor-in-Chief
John J. Ritsko
IBM T. J. Watson Research Center5