Systems architecture

About: Systems architecture is a research topic. Over the lifetime, 17612 publications have been published within this topic receiving 283719 citations. The topic is also known as: system architecture.

Unity: experiences with a prototype autonomic computing system

Abstract: The behavior of a system results from the behaviors of its components, and from the interactions and relationships among them. In order to create computing systems that manage themselves, we will need to design both the behaviors of the individual elements, and the relationships that are formed among them. This paper describes a research project called Unity, carried out at IBM's Thomas J. Watson Research Center, in which we explore some of the behaviors and relationships that will allow complex computing systems to manage themselves; to be self-configuring, self-optimizing, self-protecting, and self-healing. The four principle aspects of Unity that we examine are the overall architecture of the system, the role of utility functions in decision-making within the system, the way the system uses goal-driven self-assembly to configure itself, and the design patterns that enable self-healing within the system.

Development of the CODER system: a testbed for artificial intelligence methods in information retrieval

Abstract: The CODER ( Co mposite D ocument E xpert/Extended/Effective R etrieval) system is a testbed for investigating the application of artificial intelligence methods to increase the effectiveness of information retrieval systems. Particular attention is being given to analysis and representation of heterogeneous documents, such as electronic mail digests or messages, which vary widely in style, length, topic, and structure. Since handling passages of various types in these collections is difficult even for experimental systems like SMART, it is necessary to turn to other techniques being explored by information retrieval and artificial intelligence researchers. The CODER system architecture involves communities of experts around active blackboards, accessing knowledge bases that describe users, documents, and lexical items of various types. The initial lexical knowledge base construction work is now complete, and experts for search and time/date handling can perform a variety of processing tasks. User information and queries are being gathered, and a simple distributed skeletal system is operational. It appears that a number of artificial intelligence techniques are needed to best handle such common but complex document analysis and retrieval tasks.

Cheops: a reconfigurable data-flow system for video processing

Abstract: The Cheops Imaging System is a compact, modular platform for acquisition, processing, and display of digital video sequences and model-based representations of moving scenes, and is intended as both a laboratory tool and a prototype architecture for future programmable video decoders. Rather than using a large number of general-purpose processors and dividing up image processing tasks spatially, Cheops abstracts out a set of basic, computationally intensive stream operations that may be performed in parallel and embodies them in specialized hardware. We review the Cheops architecture, describe the software system that has been developed to perform resource management, and present the results of some performance tests. >

The Delta-4 extra performance architecture (XPA)

Abstract: The design of an extra performance architecture for Delta-4, which explicitly supports the requirements of real-time systems with respect to throughput and response, is presented. The Delta-4 approach to fault tolerance is based on the replication of software components on distinct host computers using a range of different replication strategies. The problems of replicate divergence are discussed, and a solution based on message selection and preemption synchronization messages is proposed. A description of the ongoing implementation of such a system within the overall Delta-4 framework is included. >