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Heterogeneous real-time services in high-performance system area networks - application demands and case study definitions
Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE).
Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE).ORCID iD: 0000-0002-6526-3931
SUNET/KTH-NOC.
Ericsson Microwave Systems.
2002 (English)Report (Other academic)
Abstract [en]

To be able to verify the feasibility of high-performance networks, it is essential to evaluate them according to specific application requirements. At the same time, specifications of quite general, or understandable, application requirements are needed for the ability to make repeated analyses on different networks. Especially, heterogeneous real-time requirements must be defined to be able to analyze networks to be used in future applications. In this report, we introduce two application fields where system area networks (SANs) supporting heterogeneous real-time services are highly desirable if not required: radar signal processing and large IP routers. For each application field, a case study with heterogeneous real-time communication requirements is defined. No case studies are presented in this report. Instead, they are defined for later evaluations to determine how suitable networks are for applications with heterogeneous real-time communication requirements.

Place, publisher, year, edition, pages
Halmstad: School of Information Science, Computer and Electrical Engineering (IDE), Halmstad University , 2002. , 10 p.
Series
Technical Report, IDE - 0254
Keyword [en]
Embedded systems, interconnection networks
National Category
Computer Engineering
Identifiers
URN: urn:nbn:se:hh:diva-51OAI: oai:DiVA.org:hh-51DiVA: diva2:232642
Available from: 2009-08-25 Created: 2009-08-24 Last updated: 2017-02-08Bibliographically approved
In thesis
1. Protocols with Heterogeneous Real-Time Services for High-Performance Embedded Networks
Open this publication in new window or tab >>Protocols with Heterogeneous Real-Time Services for High-Performance Embedded Networks
2002 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Network protocols for applications that demand high performance and heterogeneous real-time services are presented. These protocols control the medium access to the network and offer additional features to the user, both different user services for traffic and services for parallel and distributed real-time processing. The network architecture assumed is a unidirectional pipelined optical ring.

Radar Signal Processing (RSP) is a typical application area. Such a system contains many computation nodes that are interconnected in order to co-operate and thereby achieve higher performance. The computing performance of the whole system is greatly affected by the choice of network. Computing nodes in a parallel computer for RSP should be tightly coupled, i.e., communications cost (e.g. latency) between nodes should be small, so that the whole system can be perceived as a single unit. This is possible if a suitable network with an efficient protocol is used.

There is an industrial need for new high-performance networks with support for the, often heterogeneous, real-time requirements found in (often embedded) applications such as RSP and other areas such as multimedia. The traffic this kind of network can be classified according to its requirements. The proposed protocols partition the traffic into three classes with distinctly different qualities. These classes are traffic with hard real-time demands, such as mission critical commands, traffic with soft real-time demands, such as process data (a deadline miss here only leads to decreased performance) and, finally, traffic with no real-time constraints at all. The contributions of the present thesis are protocols that integrate heterogeneous real-time services for the three traffic classes.

The performance of the proposed protocols is evaluated through simulations and analysis. It is shown that the protocol is an efficient choice for RSP systems. A brief survey of related technologies is included in the thesis. These are studied from the perspectives of application, architecture and user service.

Place, publisher, year, edition, pages
Göteborg: Chalmers tekniska högskola, 2002. x, 26 p.
Series
Technical report. L, 14
Keyword
Optical, Ring, Pipeline, Distributed, Parallel-Processing, Real-time, SAN, System Area Network, Heterogeneous, Service
Identifiers
urn:nbn:se:hh:diva-376 (URN)2082/700 (Local ID)2082/700 (Archive number)2082/700 (OAI)
Presentation
(English)
Available from: 2007-01-10 Created: 2007-01-10 Last updated: 2010-02-11Bibliographically approved

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Jonsson, MagnusÅhlander, Anders
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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
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  • sv-SE
  • Other locale
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Output format
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