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IBM Journal of Research and Development

Issue 6 • Date Nov. 2000

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Displaying Results 1 - 12 of 12
  • Custom circuit design as a driver of microprocessor performance

    Publication Year: 2000, Page(s):799 - 822
    Cited by:  Papers (14)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1331 KB)

    This paper presents a survey of some of the most aggressive custom designs for CMOS processor products and prototypes in IBM. We argue that microprocessor performance growth, which has traditionally been driven primarily by CMOS technology and microarchitectural improvements, can receive a substantial contribution from improvements in circuit design and physical organization. We predict that in fu... View full abstract»

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  • Minimal-storage high-performance Cholesky factorization via blocking and recursion

    Publication Year: 2000, Page(s):823 - 850
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (516 KB)

    We present a novel practical algorithm for Cholesky factorization when the matrix is stored in packed format by combining blocking and recursion. The algorithm simultaneously obtains Level 3 performance, conserves about half the storage, and avoids the production of Level 3 BLAS for packed format. We use recursive packed format, which was first described by Andersen et al. [1] . Our algorithm uses... View full abstract»

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  • A performance methodology for commercial servers

    Publication Year: 2000, Page(s):851 - 872
    Cited by:  Papers (17)  |  Patents (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (148 KB)

    This paper discusses a methodology for analyzing and optimizing the performance of commercial servers. Commercial server workloads are shown to have unique characteristics which expand the elements that must be optimized to achieve good performance and require a unique performance methodology. The steps in the process of server performance optimization are described and include the following: 1. S... View full abstract»

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  • POWER3: The next generation of PowerPC processors

    Publication Year: 2000, Page(s):873 - 884
    Cited by:  Papers (17)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (230 KB)

    The POWER3 processor is a high-performance microprocessor which excels at technical computing. Designed by IBM and deployed in various IBM RS/6000® systems, the superscalar RISC POWER3 processor boasts many advanced features which give it exceptional performance on challenging applications from the workstation to the supercomputer level. In this paper, we describe the microarchitectural fea... View full abstract»

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  • A multithreaded PowerPC processor for commercial servers

    Publication Year: 2000, Page(s):885 - 898
    Cited by:  Papers (18)  |  Patents (18)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (298 KB)

    This paper describes the microarchitecture of the RS64 IV, a multithreaded PowerPC® processor, and its memory system. Because this processor is used only in IBM iSeries™ and pSeries™ commercial servers, it is optimized solely for commercial server workloads. Increasing miss rates because of trends in commercial server applications and increasing latency of cache misses because... View full abstract»

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  • S/390 microprocessor design

    Publication Year: 2000, Page(s):899 - 907
    Cited by:  Papers (3)  |  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (85 KB)

    The technical, business, and market requirements for large enterprise servers (“mainframes”) strongly influence the design of microprocessors for these systems. Specific characteristics of the ESA/390 and z/Architecture instruction set architectures lead to different pipeline and branch prediction strategies than are found in most other microprocessors. The requirements for robust, s... View full abstract»

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  • An SXGA reflective liquid crystal projection light valve incorporating inversion by pixel bootstrapping

    Publication Year: 2000, Page(s):909 - 918
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (200 KB)

    A new experimental SXGA liquid-crystal-on-silicon reflective projection light valve is described. It incorporates a novel inversion scheme, the bootstrapped pixel method, which extends the available pixel voltage range with lower applied voltages from the external data driver. This can enable the use of liquid crystal modes and performance-enhancing pixel structures which increase the pixel voltag... View full abstract»

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  • Bandwidth problems in high-speed networks

    Publication Year: 2000, Page(s):919 - 938
    Cited by:  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (188 KB)

    High-speed networks are capable of carrying many types of services such as voice, data, images, and video. These services have different requirements in terms of bandwidth, cell loss, delay, etc. The goal is to maximize the quality of service offered during periods of stress, as viewed by both the network provider and the customer. Many problems are created by these different requirements. This pa... View full abstract»

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  • Recent publications by IBM authors

    Publication Year: 2000, Page(s):939 - 952
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (103 KB)

    The information listed here is supplied by the Institute for Scientific Information and other outside sources. Reprints of the papers may be obtained by writing directly to the first author cited. Journals are listed alphabetically by title; papers are listed sequentially for each journal. View full abstract»

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  • Recent IBM patents

    Publication Year: 2000, Page(s):953 - 962
    IEEE is not the copyright holder of this material | PDF file iconPDF (59 KB)
    Freely Available from IEEE
  • Author index for papers in Volume 44

    Publication Year: 2000, Page(s):963 - 966
    IEEE is not the copyright holder of this material | PDF file iconPDF (42 KB)
    Freely Available from IEEE
  • Subject index for papers in Volume 44

    Publication Year: 2000, Page(s):967 - 972
    IEEE is not the copyright holder of this material | PDF file iconPDF (45 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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Meet Our Editors

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