scispace - formally typeset
Search or ask a question

Showing papers on "Database-centric architecture published in 1984"


Journal ArticleDOI
Hennessy1
TL;DR: In a VLSI implementation of an architecture, many problems can arise from the base technology and its limitations, so the architects must be aware of these limitations and understand their implications at the instruction set level.
Abstract: A processor architecture attempts to compromise between the needs of programs hosted on the architecture and the performance attainable in implementing the architecture. The needs of programs are most accurately reflected by the dynamic use of the instruction set as the target for a high level language compiler. In VLSI, the issue of implementation of an instruction set architecture is significant in determining the features of the architecture. Recent processor architectures have focused on two major trends: large microcoded instruction sets and simplified, or reduced, instruction sets. The attractiveness of these two approaches is affected by the choice of a single-chip implementation. The two different styles require different tradeoffs to attain an implementation in silicon with a reasonable area. The two styles consume the chip area for different purposes, thus achieving performance by different strategies. In a VLSI implementation of an architecture, many problems can arise from the base technology and its limitations. Although circuit design techniques can help alleviate many of these problems, the architects must be aware of these limitations and understand their implications at the instruction set level.

216 citations


Proceedings ArticleDOI
25 Jun 1984
TL;DR: An architecture for application of artificial intelligence to engineering design places emphasis on evaluation and redesign, thus reflecting the iterative nature of the design process.
Abstract: An architecture for application of artificial intelligence to engineering design is presented and discussed. The architecture places emphasis on evaluation and redesign, thus reflecting the iterative nature of the design process. Six independent knowledge sources are included having the following functions: initial design, evaluation, acceptability decisions, redesign, user-designer input, and flow of control. A "blackboard" is used to store and exchange information among the knowledge sources. The implementation of the architecture is illustrated with two examples from the mechanical design domain: v-belt drives and extruded aluminum shapes.

41 citations



Journal ArticleDOI
TL;DR: Power of the methodology will lie in its generality, i.e. it could be used to design an architecture for practically any arbitrary computing environment.
Abstract: To design a computer architecture for a class of computations (algorithms), systematically and in a top-down fashion, a general and uniform methodology should be developed. For a given class, there exists an information structure of the architecture such that efficient performance can be achieved for the given class. The methodology is used to find such an information structure and then, to define the control structure of the architecture at functional level. The control structure itself can be treated as another architecture (with a different computing environment), and therefore, again, its Information Structure and then Control Structure (at a lower level) could be found using the same methodology. This recursive application of the methodology to define and design Information Structures and Control Structures terminates when the Control Structure can be trivially 'hard-wired'. Power of the methodology will lie in its generality, i.e. it could be used to design an architecture for practically any arbitrary computing environment.