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Proceedings. Sixth International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (Cat. No.98TB100247)

24-24 July 1998

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  • Proceedings. Sixth International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (Cat. No.98TB100247)

    Publication Year: 1998
    Request permission for commercial reuse | PDF file iconPDF (269 KB)
    Freely Available from IEEE
  • Index of authors

    Publication Year: 1998, Page(s):315 - 316
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    Freely Available from IEEE
  • Performance analysis of cellular mobile communication networks supporting multimedia services

    Publication Year: 1998, Page(s):274 - 281
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB)

    This paper illustrates the development of an approximate analytical model for a communication network providing integrated services to a population of mobile users, and presents performance results to both validate the analytical approach, and assess the quality of the services offered to the end users. The analytical model is based on continuous-time multidimensional birth-death processes, and it... View full abstract»

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  • Simulation of self-organizing spectrum management in wireless networks

    Publication Year: 1998, Page(s):268 - 273
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (84 KB)

    We describe the simulation of a new dynamic channel assignment algorithm in FDMA/TDMA wireless networks. The algorithm relies on periodic interference measurements by each of the base stations on the inactive frequencies, so as to identify appropriate candidate channels. The adaptive nature provides automatic configuration at the time of system initialization and adaptation to system expansion and... View full abstract»

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  • Improving lookahead in parallel wireless network simulation

    Publication Year: 1998, Page(s):262 - 267
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (48 KB)

    Simulation of large sets of mobile computers or other wireless communication devices is difficult because of the computationally intensive models of wireless channels. Parallel simulation would seem to be applicable here because of the large computation granularity, but the location based communication topology makes conservative methods difficult to implement. This paper considers a novel approac... View full abstract»

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  • A measurement methodology to calibrate analytical models including operating system overhead

    Publication Year: 1998, Page(s):255 - 260
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (60 KB)

    The paper focuses on reducing completion time in large simulation models by replacing some of their elements with analytically determined solutions. In particular, we study realistic analytical server models that include operating system overhead. This overhead will be determined by measuring the behaviour of a representative workload. We propose a methodology to reduce the number of measurements ... View full abstract»

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  • Performance analysis of an end-to-end bandwidth regulation scheme

    Publication Year: 1998, Page(s):133 - 138
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (72 KB)

    The inclusion of integrated quality of service (QoS) support in existing and future networking technologies and protocols has become a highly relevant area of research. But the variety and heterogeneity of different approaches for QoS support on different protocol layers result in the need of a solution with an end-to-end overview and regulation of data flows in a controllable subnetwork. The ROBI... View full abstract»

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  • An on-line simulator for wormhole routing networks

    Publication Year: 1998, Page(s):249 - 254
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (52 KB)

    We present the design and implementation of an efficient online simulator for wormhole routing networks, which is an important part of the Concordia Parallel Systems Simulator (CPSS), a simulator for wormhole routed multicomputers. The ultimate purpose of the CPSS is to provide a parallel programming environment which allows users to study impacts of system and software factors on program performa... View full abstract»

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  • Efficient broadcasting protocols for video on demand

    Publication Year: 1998, Page(s):127 - 132
    Cited by:  Papers (68)  |  Patents (37)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (100 KB)

    Broadcasting protocols can improve the efficiency of video on demand services by reducing the bandwidth required to transmit videos that are simultaneously watched by many viewers. We present two broadcasting protocols that achieve nearly the same low bandwidth as the best extant broadcasting protocol while guaranteeing a lower maximum access time. Our first protocol, cautious harmonic broadcastin... View full abstract»

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  • Enabling large-scale simulations: selective abstraction approach to the study of multicast protocols

    Publication Year: 1998, Page(s):241 - 248
    Cited by:  Papers (24)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (72 KB)

    Due to the complexity and scale of the current Internet, large scale simulation is an increasingly important tool to evaluate network protocol design. Parallel and distributed simulation is one appropriate approach to the simulation scalability problem, but it can require expensive hardware and have high overhead. We investigate a complementary solution-simulation abstraction. Just as a custom sim... View full abstract»

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  • Statistical multiplexing of self-similar video streams: simulation study and performance results

    Publication Year: 1998, Page(s):119 - 126
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB)

    Achieving statistical gains when multiplexing video streams, as in a video-on-demand (VOD) scenario, is difficult because of the stringent QOS demands and the self-similar nature of the traffic. This paper explores, through empirical simulation, the QOS, network utilization, and statistical characteristics of the aggregate traffic resulting from multiple independent MPEG video streams. In addition... View full abstract»

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  • Effect of gateway buffer management policies on TCP over ATM performance

    Publication Year: 1998, Page(s):63 - 68
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (136 KB)

    In this paper, we examine the effect of the buffer management policies, used at the IP/ATM gateway, on the end-to-end performance seen by IP traffic when using the ATM ABR service class. The ABR service class uses feedback-based flow control at the ATM layer to dynamically partition bandwidth among active ABR virtual circuits. It is likely that the ABR service will be operated in a manner designed... View full abstract»

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  • IDES: a Java-based distributed simulation engine

    Publication Year: 1998, Page(s):233 - 240
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (88 KB)

    The paper describes the design and performance of IDES, a Java based distributed simulation engine being developed at Sandia National Laboratories. The feasibility of using Java is demonstrated by achieving order of magnitude speedup gains, on a model with three quarters of a million simulated entities, on an “off-the-shelf” system of 56 PentiumPro processors View full abstract»

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  • A binary feedback flow control scheme using system sensitivity derivatives for congestion detection

    Publication Year: 1998, Page(s):112 - 117
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (104 KB)

    This paper presents a binary feedback flow control scheme which uses the gradient of the system performance function to generate feedback from the network to the data sources. The setting of the single bit congestion indication communicated back to the users is based upon the sign of the gradient of the system performance function. The proposed scheme uses a simple gradient optimization method and... View full abstract»

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  • A general methodology for characterizing access patterns and analyzing Web server performance

    Publication Year: 1998, Page(s):167 - 174
    Cited by:  Papers (3)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (168 KB)

    We develop a general methodology for characterizing Web server access patterns based on a spectral analysis of finite collections of observed data from real systems. Our approach is used together with the access logs from the IBM Web site for the 1996 Olympic Games to demonstrate some of its advantages over previous methods and to analyze certain aspects of large-scale Web server performance View full abstract»

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  • Cost-delay path selection function for real-time multicast routing

    Publication Year: 1998, Page(s):56 - 61
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (108 KB)

    A critical requirement for multi-party multimedia applications is to generate a multicast tree that has minimal overall network cost and acceptable end-to-end network delay in every path. These two features of the multicast tree are often conflicting in nature and the problem of minimizing the overall network cost in multicast routing is a Steiner tree problem which is known to be NP-complete. Mos... View full abstract»

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  • Distributed-shared-memory support on the Simultaneous Optical Multiprocessor Exchange Bus

    Publication Year: 1998, Page(s):192 - 197
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (224 KB)

    This paper examines the performance of distributed-shared-memory systems based on the Simultaneous Optical Multiprocessor Exchange Bus (SOME-Bus) using queueing network models and develops theoretical results which predict processor utilization, message latency and other useful measures. It also presents simulation results which compare the performance of the SOME-Bus, the mesh and the torus. The ... View full abstract»

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  • Modeling node architectures

    Publication Year: 1998, Page(s):226 - 231
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (64 KB)

    This paper presents a modeling approach based on deterministic and stochastic Petri nets (DSPN) for analyzing the performance of node architectures for MIMD multiprocessor systems with distributed memory. DSPN are a numerically solvable modeling formalism with a graphical representation. The modeling approach supports design decisions for node architectures by providing quantitative results concer... View full abstract»

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  • Real time resource allocation in an ATM network

    Publication Year: 1998, Page(s):107 - 111
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (100 KB)

    At the input of an ATM network are present some different types of sources with different characteristics, particularly as the bandwidth concern. This paper presents a very efficient method for the real time allocation of resources in ATM networks with a prescribed grade of quality of service. It is known that the exact solution of this problem is quite cumbersome so it is impossible use it in a r... View full abstract»

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  • Performance modeling and measurement of parallelized code for distributed shared memory multiprocessors

    Publication Year: 1998, Page(s):161 - 166
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (36 KB)

    This paper presents a model to evaluate the performance and overhead of parallelizing sequential code using compiler directives for multiprocessing on distributed shared memory (DSM) systems. We parallelized the sequential implementation of NAS benchmarks using native Fortran77 compiler directives on an Origin2000, which is a DSM system. We report measurement based performance of these parallelize... View full abstract»

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  • Multicast in deflection networks

    Publication Year: 1998, Page(s):50 - 55
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (76 KB)

    Multicasting in deflection networks is more difficult than in store-and-forward networks, because of the difficulties in sending multiple copies of the same packet on several output ports. On the other hand, deflected packets stray from their optimal paths and may visit the multicast recipients “accidentally”, not necessary in the order envisioned by the sender. We compare a number of ... View full abstract»

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  • An efficient strategy for developing a simulator for a novel concurrent multithreaded processor architecture

    Publication Year: 1998, Page(s):185 - 191
    Cited by:  Papers (5)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (76 KB)

    In developing a simulator for a new processor architecture, it often is not clear whether it is more efficient to write a new simulator or to modify an existing simulator. Writing a new simulator forces the processor architect to develop or adapt all of the related software tools. However, modifying an existing simulator and related tools, which are usually not well-documented, can be time-consumi... View full abstract»

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  • QoS management: a model-based approach

    Publication Year: 1998, Page(s):205 - 210
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (104 KB)

    Quality of service (QoS) management is an important issue in today's high-speed distributed systems supporting multimedia applications. Most existing QoS management schemes usually just cope with technical issues of resource reservations and QoS guarantees, often completely neglecting revenue issues which are especially important for service providers in order to maximize their profit. The revenue... View full abstract»

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  • Delay and queue size analysis of TDMA with general traffic

    Publication Year: 1998, Page(s):217 - 225
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (156 KB)

    In TDMA (time division multiple access), stations transmit their messages on a shared communication channel using their dedicated time slots. All the previous delay analyses of TDMA have been based on the assumption that either the interarrival times of the traffic is exponential or the message lengths are geometrically distributed. This paper presents a generalized model in which the above assump... View full abstract»

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  • An empirical comparison of diffusion approximations and simulation in ATM networks

    Publication Year: 1998, Page(s):101 - 106
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB)

    We consider an ATM switch model, in which each of N sources is a Markov modulated rate process. We look at some approximations that have been proposed for p, the probability that in steady-state conditions, the buffer content exceeds x. These approximations are compared with the simulation results for p and the cell-loss ratio View full abstract»

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