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IBM Journal of Research and Development

Issue 6 • Date Nov. 1986

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Displaying Results 1 - 12 of 12
  • Microtasking on IBM multiprocessors

    Publication Year: 1986, Page(s):574 - 582
    Cited by:  Papers (1)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (895 KB)

    The demand for very high computing performance has become increasingly common in many scientific and engineering environments. In addition to vector processing, parallel computing is now considered a useful way to enhance performance. However, parallel computing tends to be unpopular among users because, with presently available technology and software, it requires explicit programmer intervention... View full abstract»

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  • Compiling APL: The Yorktown APL Translator

    Publication Year: 1986, Page(s):583 - 593
    Cited by:  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (948 KB)

    The Yorktown APL Translator (YAT) permits functions written in APL to be compiled using an existing compiler for part of the process. It also creates tables that allow the APL2 Release 2 interpreter to call the compiled code. The code can also be called from a Fortran main routine. This paper outlines the history of APL compilation, the motivation for producing YAT, the design choices that were ma... View full abstract»

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  • Program analysis and code generation in an APL/370 compiler

    Publication Year: 1986, Page(s):594 - 602
    Cited by:  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (744 KB)

    We have implemented an APL/370 compiler which accepts a subset of APL that includes most language features and a majority of APL primitive functions. It produces System/370 assembly code directly to be run independently of an interpreter. The compiler does not require variable declarations. Its front end, which is machine-independent, employs extensive type-shape analysis based on a type-shape cal... View full abstract»

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  • An automatic overlay generator

    Publication Year: 1986, Page(s):603 - 608
    Cited by:  Papers (2)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (508 KB)

    We present an algorithm for automatically generating an overlay structure for a program, with the goal of reducing the primary storage requirements of that program. Subject to the constraints of intermodule dependences, the algorithm can either find a maximal overlay structure or find an overlay structure that, where possible, restricts the program to a specified amount of primary storage. Results... View full abstract»

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  • An execution architecture for FP

    Publication Year: 1986, Page(s):609 - 616
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (538 KB)

    FP is a functional programming language proposed by John Backus to liberate programming from the “von Neumann Style.” We define here an architecture (FP machine model) that is intended to allow easy and efficient implementation of FP on a conventional von Neumann machine. We present a new execution architecture for FP based on Johnston's contour model and on Hoevel and Flynn's notion... View full abstract»

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  • Early error detection in syntax-driven parsers

    Publication Year: 1986, Page(s):617 - 626
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (832 KB)

    The early error detection capabilities of syntax-driven parsers are studied. The classes of weak precedence and simple mixed-strategy precedence parsers are chosen as the object of study. Very similar techniques could be used to obtain related results for other classes of syntax-driven parsers. We investigate whether the correct-prefix and the viable-prefix properties can be enforced within these ... View full abstract»

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  • A computerized autoradiographic technique for the simultaneous high-resolution mapping of myocardial blood flow and metabolism

    Publication Year: 1986, Page(s):627 - 634
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (729 KB)

    By using both radioactive particulate and diffusible tracers, combined with computerized processing and analysis of generated autoradiographs, a new technique for the high-resolution mapping of organ blood flow and metabolism has been developed. In this paper the technique has been evaluated for the myocardium. View full abstract»

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  • Mechanical design of the cartridge and transport for the IBM 3480 Magnetic Tape Subsystem

    Publication Year: 1986, Page(s):635 - 644
    Cited by:  Papers (2)  |  Patents (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (873 KB)

    The IBM 3480 Magnetic Tape Subsystem has achieved significant improvements over its predecessor, the 3420, in speed, data density, and floor-space requirements. The 3-megabyte-per-second data rate of the 3480, which is 2.4 times that of the 3420, was accomplished through the use of chromium-dioxide tape stored in a compact, single-reel cartridge threaded to a take-up reel. A sixfold increase in da... View full abstract»

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  • Recent papers by IBM authors

    Publication Year: 1986, Page(s):645 - 657
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1048 KB)

    The information listed here is supplied by the Institute for Scientific Information. Reprints of the papers may be obtained by writing directly to the first author cited. Papers are listed alphabetically by author. View full abstract»

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  • Recent IBM patents

    Publication Year: 1986, Page(s):658 - 661
    IEEE is not the copyright holder of this material | PDF file iconPDF (255 KB)
    Freely Available from IEEE
  • Author index for papers in Volume 30

    Publication Year: 1986, Page(s):662 - 665
    IEEE is not the copyright holder of this material | PDF file iconPDF (233 KB)
    Freely Available from IEEE
  • Subject index for papers in Volume 30

    Publication Year: 1986, Page(s):666 - 671
    IEEE is not the copyright holder of this material | PDF file iconPDF (401 KB)
    Freely Available from IEEE

Aims & Scope

The IBM Journal of Research and Development is a peer-reviewed technical journal, published bimonthly, which features the work of authors in the science, technology and engineering of information systems.

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Editor-in-Chief
Clifford A. Pickover
IBM T. J. Watson Research Center