Showing papers on "Design tool published in 1979"
23 Apr 1979
TL;DR: A methodology based on simulation models for predicting the performance of central processors with instruction execution that occurs in distinct and separable phases is described.
Abstract: As CPUs have become larger and more complex, it has become increasingly more difficult during hardware design and implementation to predict how well a CPU will perform. Furthermore, buyers of such machines have a similar problem in evaluating CPU performance among a diverse selection of computers, since MIP rates quoted by manufacturers may be misleading.This paper describes a methodology based on simulation models for predicting the performance of central processors with instruction execution that occurs in distinct and separable phases. The basic components of the model have been designed to allow a functional representation of the instruction execution path. This provides a natural mapping of the instruction set onto the architecture in a manner familiar to the designer. The model has been verified for existing computers using actual trace data from these machines. Novel aspects of the model and its use in CPU design are discussed.
10 citations
TL;DR: Simulations are tools of major importance in the design of solar energy systems and are used both for systems research and for large, one-of-a-kind systems using programs such as TRNSYS.
9 citations
01 Dec 1979
TL;DR: In this article, the authors present a simple tool and method of analysis to aid practitioners in the planning and implementation of solar energy systems, and a simple design tool for sizing solar ponds should aid analysts and planners in assessing the feasibility of solar ponds for any specified application.
Abstract: This report presents a simple tool and method of analysis to aid practitioners in the planning and implementation of solar energy systems. This simple design tool for sizing solar ponds should aid analysts and planners in assessing the feasibility of solar ponds for any specified application, and in drawing up a preliminary plan for their implementation.
7 citations
TL;DR: In this paper, preliminary propeller design is formulated by considering the interactions of the engine, the hull, the wake and the propeller, while the fuel consumption is established as the optimization criterion.
Abstract: Preliminary propeller design is formulated by considering the interactions of the engine, the hull, the wake and the propeller, while the fuel consumption is established as the optimization criterion. The purpose of this study is to formulate the problem in a clear manner, illustrated by examples, in order to develop an efficient design tool which will be used to deal with the complex problem of evaluating the performance of a ship on a specific sea route, given the weather statistics. The optimization procedure is developed in a mathematical form for fuel consumption minimization and then applied in conjunction with the B-Series, whose value is generally recognized. A critical-analysis of the B-Series data showed the need for a laminar flow correction. A method has been implemented and the corrected data have shown excellent agreement with experimental data. Finally, a simplified example is worked out to demonstrate the optimization of the performance of a vessel on a specific sea route.
3 citations
13 Aug 1979
TL;DR: Criteria which a design methodology for parallel systems should satisfy is formulated and the use of various models as the basis for such a design tool is explored.
Abstract: The problem of designing a properly functioning parallel hardware or software system is considerably more difficult than that of designing a similar sequential system. In this paper we formulate criteria which a design methodology for parallel systems should satisfy and explore the use of various models as the basis for such a design tool.
2 citations
TL;DR: An interactive approach to a powerful analysis procedure, aided by graphic interpretation of input and analysis results, provides a practical design tool.
Abstract: The purpose of this paper is to describe an interactive computer graphics approach to the analysis and design of structures exhibiting nonlinear structural behavior. A general procedure for the nonlinear analysis of planar frame structures, which accounts for member yielding, is described. In addition, the graphics programs required to input an arbitrary planar structure, monitor the analytical procedure, and aid in evaluating the results of the incremental analysis are presented. A procedure for generating a color image of the deflected structure, where the color indicates the proximity to yield, is also presented. This interactive approach to a powerful analysis procedure, aided by graphic interpretation of input and analysis results, provides a practical design tool.
2 citations
08 Oct 1979
TL;DR: In this article, the authors describe their personal experience applying net-based descriptive techniques to the design of computer hardware/software systems, and a hypothetical Automated Design Tool is described.
Abstract: The author describes his personal experience applying net-based descriptive techniques to the design of computer hardware/software systems. A hypothetical Automated Design Tool is described.
1 citations
Journal Article•
1 citations
23 Apr 1979
TL;DR: The design of a dynamically adaptive system, and the use of performance evaluation methods as a design tool are discussed, which is intended to serve as a support for education in computer architecture and operating systems.
Abstract: ARCADE is a research project in computer architecture. We first discuss its motivations and goals, wich are primarily the design of a dynamically adaptive system, and the use of performance evaluation methods as a design tool. The resulting system is intended to serve as a support for education in computer architecture and operating systems. Then, we present the overall structure of the system, and finally, we consider in more detail hardware tools that will be provided for the dynamic adaptation to varying load conditions.
1 citations
TL;DR: Although the effort necessary to develop an effective bit-slice-microprocessor microprogrammed design initially seems significant, the benefits far outweigh the investment and after microprogramming techniques are developed, new applications become much easier to accomplish.
Abstract: Although the effort necessary to develop an effective bit-slice-microprocessor microprogrammed design initially seems significant, the benefits far outweigh the investment. After microprogramming techniques are developed, new applications become much easier to accomplish. Although a designer may have to learn new methods, once mastered, a very powerful design tool can be applied to solving complex data processing or control communication systems
14 Mar 1979
TL;DR: Quasi-real simulation appears as a design tool insuring the cooperation between a simulated part of a system and its wired parts, in such a manner that its constructor may have an idea of the quasi-real machine during all the steps of its realization.
Abstract: As a result of the appearance of microprocessors, one of the important trends in actual computer architecture is the breakage of computer systems into special function processors. Accordingly, new methods and tools are developed to design and realize these systems.Quasi-real simulation appears as a design tool insuring the cooperation between a simulated part of a system and its wired parts, in such a manner that its constructor may have an idea of the quasi-real machine during all the steps of its realization.