1993 4th Workshop on Future Trends of Distributed Computing Systems

22-24 Sept. 1993

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  • 1993 4th Workshop on Future Trends of Distributed Computing Systems

    Publication Year: 1993
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    Freely Available from IEEE
  • A fail-safe architecture of service control and management system for intelligent networks

    Publication Year: 1993, Page(s):69 - 73
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    The authors propose a fail-safe architecture of a network information control system (NICS) and fault handling mechanisms for highly available NICSs. The NICS consists of seven processors, including duplicated common channel signaling processors (CCPS), duplicated service logic processors (SLPs), a service management processor (SMP), duplicated operations and administrations processors (OAPs), and... View full abstract»

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  • Congestion avoidance is interconnected local area networks

    Publication Year: 1993, Page(s):262 - 268
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    The interconnection of dissimilar LANs and devices over a high-speed backbone network can create congestion at a destination LAN (output) gateway when more than one device or LAN attempts to simultaneously communicate with the same device or LAN. The authors address the issue of congestion avoidance in LANs interconnected by a high speed backbone. A congestion-avoidance scheme that requires input ... View full abstract»

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  • XTP versus TCP/IP in a UNIX/Streams environment

    Publication Year: 1993, Page(s):76 - 82
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    Discusses whether XTP is a good replacement for TCP. The two are compared based on standard data transfers between UNIX systems using a Streams environment. The authors first modified the KRM implementation of XTP to port it to the Streams. Performance comparisons with TCP showed no significant differences. They modified XTP's acknowledgement strategy to reduce the number of control packets meant ... View full abstract»

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  • Schedulability analysis of multi-access protocols for distributed real-time systems

    Publication Year: 1993, Page(s):332 - 338
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    The class of online protocols which exhibit deterministic properties in spite of a lack of global knowledge are considered. Such protocols (e.g. tree protocols) yield computable bounds on the duration of collision resolution. The authors show that combining such deterministic properties with feasibility tests, such as those developed in real-time scheduling, permits the design of provably correct ... View full abstract»

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  • Parallel programming on reconfigurable meshes with buses

    Publication Year: 1993, Page(s):188 - 193
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    Several mesh-like architectures have been proposed to support parallel computing. These connect the processor mesh with a system of reconfigurable buses. In this work, the authors present several examples to illustrate the ease with which efficient (in fact, constant time) programs can be developed for the weakest of these architectures. The examples are from computational geometry View full abstract»

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  • Blocking probability and convergence analysis of an adaptive DQDB bandwidth balancing mechanism

    Publication Year: 1993, Page(s):269 - 275
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB)

    The authors present a distributed realization of an adaptive load-based bandwidth balancing mechanism (APR, adaptive proportional) for improving DQDB (distributed queue dual bus), fairness and performance. Under the APR strategy, bandwidth is assigned distributedly and dynamically to each station according to the current offered load distribution in the system. The major significance of the method... View full abstract»

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  • Towards multimedia communication services

    Publication Year: 1993, Page(s):83 - 89
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    A set of basic synchronization facilities is identified that can be expected from a general-purpose, multimedia communication service. Formalization relies on the concept of temporal signature previously introduced for characterizing the temporal properties of multimedia streams. The authors discuss several mechanisms related to temporal signature preservation. Dependency relationships among the d... View full abstract»

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  • Constructing a distributed multimedia joint viewing and tele-operation service for heterogeneous workstation environments

    Publication Year: 1993, Page(s):8 - 15
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (696 KB)

    JVTOS (joint viewing and tele-operation service) is an advanced teleservice to support cooperative work over distance which allows distributed users to work in a collaborative fashion with multimedia. JVTOS comprises facilities for session management, floor control, multimedia application sharing, telephoning, and audio/video communication. It provides generic support for cooperation-aware multime... View full abstract»

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  • How to find his way in the jungle of consistency criteria for distributed shared memories (or how to escape from Minos' labyrinth)

    Publication Year: 1993, Page(s):340 - 346
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    Surveys consistency criteria that have been proposed, and sometimes implemented, for distributed shared objects and memories. Linearizability, sequential consistency, hybrid consistency and causal consistency are particularly emphasized. These criteria are precisely analyzed and protocols that implement them are described. It is suggested that the hybrid consistency, introduced by Attiya and Fried... View full abstract»

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  • On the co-operative management of domains in open distributed systems

    Publication Year: 1993, Page(s):47 - 53
    Cited by:  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    The authors describe the need for collaboration of managers in co-operative applications where federative operational structures must be harmonized with the hierarchical organizational environment. A federation concept is introduced which augments existing hierarchical domain management policies and procedures. The concept includes proposals for federative domains, manager domains, and collaborati... View full abstract»

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  • On the integration of model-based performance optimization and program implementation

    Publication Year: 1993, Page(s):196 - 202
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (604 KB)

    The author describes an approach to integrate system design and implementation of embedded parallel systems into a programming environment. The computation of the design decisions is based on the branch-and-bound-with-underestimate technique, previously applied to compute the optimal schedule for precedence constraint task graphs in the presence of communication cost. The authors have extended thi... View full abstract»

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  • An efficient circuit-switching mechanism for interprocess communication in a transputer network

    Publication Year: 1993, Page(s):215 - 220
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (516 KB)

    Distributed real time system require interprocess communication (IPC) services to be not only reliable and efficient but also predictable. In such dynamic systems, predictability can only be achieved by proper architectural support that embodies adequate mechanisms and policies within the operating system. The authors present the design and implementation of predictable transport level communicati... View full abstract»

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  • An Ethernet performance model with Nu users simultaneously accessing Ns servers

    Publication Year: 1993, Page(s):276 - 282
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    A previously published LAN performance model had two user response time components that involved transmission on the LAN: simultaneous input requests for Nu users for service from one of Ns servers transmitted over a broadband Ethernet; and transmission of the requested information over the Ethernet to the Nu user RAMs. The purpose of the model was to predict user... View full abstract»

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  • OPERA: storage, programming and display of multimedia objects

    Publication Year: 1993, Page(s):442 - 448
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    The OPERA project seeks to support the interactive display of synchronized multiple types of media on workstations. This style of application needs high speed ATM (asynchronous transfer mode) networks and suitable protocols and operating systems, which exist at the University of Cambridge computer laboratory. Above this infrastructure, the authors have designed and are building a multiple-service ... View full abstract»

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  • Quality of service based transport architecture using XTP

    Publication Year: 1993, Page(s):90 - 96
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (624 KB)

    The RACE 2060 project CIO (Coordination, Implementation and Operation) uses a quality of service (QoS) based multimedia architecture supported by XTP (Xpress Transfer Protocol) XTP covers the OSI transport and network layer and is designed for high-speed communication. It has flexible mechanisms, such as connection-oriented mechanisms and selective retransmission, for QoS provision of multimedia a... View full abstract»

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  • Conception of a multimedia electronic mail based on standards

    Publication Year: 1993, Page(s):16 - 22
    Cited by:  Papers (1)  |  Patents (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    The authors study multimedia electronic mail together with the issues of concern surrounding it and give an overview of a user-friendly multimedia electronic mail. Based on this study, the authors present a multimedia electronic system that allows the originator to write a scenario to coordinate the parts it sends and to adapt the message restitution to the receiver messaging system View full abstract»

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  • Distributed computing with parallel networking

    Publication Year: 1993, Page(s):375 - 379
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    For many large scientific applications, computing on a cluster is a viable, economical alternative to a dedicated parallel machine. Application performance on a cluster is largely determined by the speed of the underlying communication network. The authors use a parallel network approach to improve the communication network performance. More specifically, they use multiple networks based on Ethern... View full abstract»

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  • R-linearizability: an extension of linearizability to replicated objects

    Publication Year: 1993, Page(s):347 - 353
    Cited by:  Papers (3)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    The authors extend linearizability, a consistency criterion for concurrent systems, to the replicated context, where availability and performance are enhanced by using redundant objects. The mode of operation on sets of replicas and the consistency criterion of R-linearizability are defined. An implementation of R-linearizable replicated atoms (on which only read and write operations are defined) ... View full abstract»

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  • Replicated object management using group technology

    Publication Year: 1993, Page(s):54 - 61
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (784 KB)

    The authors detail the goals of the ROMANCE (replicated object management configurable environment) project and present its software architecture and current status. A fundamental goal of the project is to experiment with group technology. In ROMANCE, distribution and replication are implemented using underlying group communication and membership services. The authors also describe how these tools... View full abstract»

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  • A distributed object-oriented system with multi-threads of services

    Publication Year: 1993, Page(s):247 - 254
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (684 KB)

    Distributed computing systems are becoming more and more popular. Most developing tools and environments for distributed systems were developed with structured programming languages and remote procedure calls (RPCs). The authors present an approach to construct a network-based distributed system, of which each subsystem is object-oriented and supports multiple threads of control. The remote servic... View full abstract»

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  • Fair distribution of concerns in design and evaluation of fault-tolerant distributed computer systems

    Publication Year: 1993, Page(s):173 - 180
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    In literature dealing with fault-tolerant computer systems, the replaceable components are most often modeled as one of the two extreme types with respect to their faulty output behavior: the fail-silent unit (FSU) model at the simplest end and the malicious unit (MaU) model, also called the Byzantine unit model, at the other end. The basic weaknesses of these models for use in practical system de... View full abstract»

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  • Hierarchical decision structure for distributed algorithms

    Publication Year: 1993, Page(s):203 - 207
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    When the number of nodes in a distributed system becomes very large, neither a fully centralized algorithm nor a fully distributed algorithm is suitable for implementation. The number of messages exchanged in most distributed algorithms becomes too large to make them practical, while the system with a fully centralized algorithm is vulnerable to failure of the control node. The authors propose ano... View full abstract»

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  • Using the object space: a distributed parallel make

    Publication Year: 1993, Page(s):234 - 239
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    The author presents the object space approach to distributed computation. It allows for decoupled communication between program components by providing a shared data space of objects. The object space approach extends the sequential language C++ with coordination and communication primitives, such as those in Linda. It integrates inheritance into the associative addressing scheme and facilitates p... View full abstract»

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  • Cooperative access to relational and object-oriented federated databases

    Publication Year: 1993, Page(s):222 - 227
    Cited by:  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    Much work has been done in the field of heterogeneous federated database systems (FDBSs), but almost all this work deals with relational systems or, eventually, with the integration of hierarchical and network models and the relational model. The authors present a prototype that allows access to relational (INGRES) and object-oriented (O2) database systems composing a federation. They assume that ... View full abstract»

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