检索结果-内蒙古大学图书馆

Schedulability-Driven Frame Packing for Multicluster distributed embedded systems

ACM Transactions on embedded Computing systems 2005年第1期4卷 112-140页

作者： Pop, Paul Eles, Petru Peng, Zebo Department of Computer and Information Science Linköping University Linköping 581 83 Sweden

We present an approach to frame packing for multicluster distributed embedded systems consisting of time-triggered and event-triggered clusters, interconnected via gateways. In our approach, the application messages are packed into frames such that the application is schedulable, thus the end-to-end message communication constraints are satisfied. We have proposed a schedulability analysis for applications consisting of mixed event-triggered and time-triggered processes and messages, and a worst-case queuing delay analysis for the gateways, responsible for routing intercluster traffic. Optimization heuristics for frame packing aiming at producing a schedulable system have been proposed. Extensive experiments and a real-life example show the efficiency of our frame-packing approach. © 2005, ACM. All rights reserved.

关键词： Algorithms Design distributed embedded systems Frame packing Performance schedulability analysis Theory

来源：评论

学校读者我要写书评

暂无评论

Analyzable Modeling of Legacy Communication in Component-Based distributed embedded systems

Analyzable Modeling of Legacy Communication in Component-Bas...

引用

Joint Conference of 14th EUROMICRO Digital systems Design Conference (DSD) / 37th EUROMICRO Conference on Software Engineering and Advanced Applications (SEAA)

作者： Mubeen, Saad Maki-Turja, Jukka Sjodin, Mikael Carlson, Jan Malardalen Univ Malardalen Real Time Res Ctr MRTC Vasteras Sweden Arcticus Syst Jarfalla Sweden

ISBN: (纸本)9780769544885

We present extensions to the existing industrial component model Rubus Component Model (RCM). By introducing special purpose components to encapsulate and abstract the communication protocols in distributed embedded systems we allow use of legacy nodes and legacy protocols in a component-based and model-based software engineering environment. With the addition of these components, RCM will be able to support state-of-the-practice development processes of distributed embedded systems where communication rules are defined early in the development process. The proposed extension also allows model-based and component-based development of new nodes that are deployed in the legacy systems that use predefined communication rules. We also demonstrate how an end-to-end timing model can be extracted from a distributed embedded system modeled with extended RCM. The extracted model is then used to perform an end-to-end timing analysis that we implemented in the Rubus Analysis Framework.

关键词： Model-Based Software Engineering Component-Based Software Engineering distributed embedded systems end-to-end timing analysis

来源：评论

学校读者我要写书评

暂无评论

I/O-aware list scheduling for distributed embedded systems

I/O-aware list scheduling for distributed embedded systems

引用

3rd IEEE Intelligent Data Acquisition and Advanced Computing systems

作者： Karakehayov, Zdravko Univ So Denmark DK-6400 Soderborg Denmark

ISBN: (纸本)9780780394452

This paper discusses list scheduling for distributed real-time embedded systems. The goal is to provide more realistic scheduling, taking into account the actual distribution of sensors and actuators in different locations of the controlled object. We propose an I/O-aware DFG as a suitable replacement for the general DFG. Along with the locations of the peripherals, the bus activity is another issue which is usually ignored We calculate bus activities to assess the power efficiency of the scheduling. The proposed I/O-driven scheduling is a simplified procedure for rapid evaluation of the timing parameters which emerge after scheduling. Finally, we discuss I/O-aware scheduling as a modification of the list scheduling heuristic. The I/O-aware scheduling takes into account the compulation and communication for both intertask and task-to-peripheral links.

关键词： distributed embedded systems real-time embedded systems list scheduling input/output

来源：评论

学校读者我要写书评

暂无评论

Modeling of Legacy distributed embedded systems at Vehicle Abstraction Level 19

Modeling of Legacy Distributed Embedded Systems at Vehicle A...

引用

19th International ACM SIGSOFT Symposium on Component-Based Software Engineering (CBSE)

作者： Mubeen, Saad Nolte, Thomas Sjodin, Mikael Lundback, John Galnander, Mattias Lundback, Kurt-Lennart Malardalen Univ Malardalen Real Time Res Ctr Vasteras Sweden Arcticus Syst AB Jarfalla Sweden

ISBN: (纸本)9781509025695

A large majority of existing software development approaches in the vehicle industrial domain have a limited or no modeling support to fully reuse legacy nodes at the highest abstraction, called the vehicle level. In this paper, we introduce a new technique for model- and component-based development of vehicular distributed embedded systems at the vehicle level. The proposed technique supports not only modeling of crude nodes or Electronic Control Units but also modeling of legacy nodes whose software architectures can be partially or completely reused. As a proof of concept, we implement the modeling technique in an industrial model, the Rubus Component Model. In order to show the usability of our approach, we model a vehicular application using the extended component model and its tool suite.

关键词： component model component-based software engineering distributed embedded systems Vehicular embedded systems

来源：评论

学校读者我要写书评

暂无评论

Online Robustness Testing of distributed embedded systems: an Industrial Approach 39

Online Robustness Testing of Distributed Embedded Systems: a...

引用

39th IEEE/ACM International Conference on Software Engineering: Software Engineering in Practice Track (ICSE-SEIP)

作者： Alnawasreh, Khaled Pelliccione, Patrizio Hao, Zhenxiao Range, Marten Bertolino, Antonia Chalmers Univ Technol Dept Comp Sci & Engn Gothenburg Sweden Univ Gothenburg Dept Comp Sci & Engn Gothenburg Sweden Ericsson AB Gothenburg Sweden CNR ISTI Via G Moruzzi 1 I-56124 Pisa Italy

ISBN: (纸本)9781538627174

Having robust systems that behave properly even in presence of faults is becoming increasingly important. This is the case of the system we investigate in this paper, which is an embedded distributed system consisting of components that communicate with each other via messages exchange in the RBS (Radio Based Station) at Ericsson AB in Gothenburg, Sweden. Specifically, this paper describes a novel fault injection approach for testing the robustness of distributed embedded systems with very limited computation power. The new approach is inspired by Netflix's ChaosMonkey, a fault injection approach that has been developed for testing distributed systems hosted in the cloud. However, ChaosMonkey cannot be used in the context of RBS since the latter consists of small-embedded components with specific requirements of performance, programming language, and communication paradigm. This paper reports about the approach called Postmonkey we developed, illustrates the results of applying it to RBS, and discusses the potential of utilizing fault injection to test complex, embedded, and distributed systems. The approach and tool are now adopted by Ericsson.

关键词： online testing fault injection distributed embedded systems

来源：评论

学校读者我要写书评

暂无评论

On the Schedulability Analysis for Dynamic QoS Management in distributed embedded systems

On the Schedulability Analysis for Dynamic QoS Management in...

引用

8th IFIP Workshop on Software Technologies for embedded and Ubiquitous systems

作者： Almeida, Luis Marau, Ricardo Lakshmanan, Karthik Rajkumar, Raj Univ Porto Fac Engn IEETA IT DEEC Rua Campo Alegre 823 P-4100 Oporto Portugal Carnegie Mellon Univ Real Time & Multimedia Syst Lab Pittsburgh PA USA

ISBN: (纸本)9783642162558

Dynamic Quality-of-Service (QoS) management has been shown to be an effective way to make an efficient use of systems resources, such as computing, communication or energy. This is particularly important in resource-contrained embedded systems, such as vehicles, multimedia devices, etc.. Deploying dynamic QoS management requires using an appropriate schedulability test that is fast enough and ensures continued schedulability while the system adapts its configuration. In this paper we consider four utilization-based tests with release jitter, a particularly relevant feature in distributed systems, three of which were recently proposed and one is added in this work. We carry out an extensive comparison using random task sets to characterize their relative merits and we show a case study where multiple video streams are dynamically managed in a fictitious automotive application using such schedulability bounds.

关键词： Real-time scheduling Quality-of-Service distributed embedded systems

来源：评论

学校读者我要写书评

暂无评论

Visualisation to Support Fault Localisation in distributed embedded systems Within the Automotive Industry 29

Visualisation to Support Fault Localisation in Distributed E...

引用

29th IEEE International Symposium on Software Reliability Engineering (ISSRE)

作者： de Oliveira Neto, Francisco Gomes Jones, Michael Martins, Rafael da Silva Chalmers Univ Gothenburg Gothenburg Sweden Sigma Embedded Engn AB Gothenburg Sweden Zenuity AB Gothenburg Sweden

ISBN: (纸本)9781538694435

This paper presents the design, development and evaluation of a software tool to assist the localisation of root causes of test case failures in distributed embedded systems, specifically vehicle systems controlled by a network of electronic control units (ECUs). We use data visualising to provide sensible information from a large number of test execution logs from large-scale software integration testing under a continuous integration process. Our goal is to allow more efficient root-cause identification of failures and foster a continuous feedback loop in the fault localisation process. We evaluate our solution in-situ at the Research and Development division of Volvo Car Corporation (VCC). Our prototype helps the failure debugging procedures by presenting clear and concise data and by allowing stakeholders to filter and control which information is displayed. Moreover, it encourages a systematic and continuous analysis of the current state of testing by aggregating and categorising historical data from test harnesses to identify patterns and trends in test results.

关键词： Fault localisation Failure data visualisation distributed embedded systems

来源：评论

学校读者我要写书评

暂无评论

On Timing Analysis of Component-based Vehicular distributed embedded systems at Various Abstraction Levels 13

On Timing Analysis of Component-based Vehicular Distributed ...

引用

13th Working IEEE/IFIP Conference on Software Architecture (WICSA)

作者： Mubeen, Saad Nolte, Thomas Malardalen Univ Malardalen Real Time Res Ctr MRTC Vasteras Sweden

ISBN: (纸本)9781509021314

Software development of component-based distributed embedded systems in the vehicle domain can be described at various abstraction levels. One important activity during the development of these systems is to verify their timing requirements by using pre-runtime analysis techniques, e.g., end-to-end timing analysis. There are several models and tools in the vehicle domain that support the timing analysis of these systems. In this paper, we discuss and compare our recent works with the existing techniques that support the end-to-end timing analysis of these systems at each abstraction level.

关键词： CBSE Component-based development distributed embedded systems End-to-end timing analysis vehicular embedded systems

来源：评论

学校读者我要写书评

暂无评论

Design optimization of mixed time/event-triggered distributed embedded systems

Design optimization of mixed time/event-triggered distribute...

引用

1st IEEE/ACM/IFIP International Conference on Hardward/Software Codesign and System Synthesis

作者： Pop, T Eles, P Peng, Z Linkoping Univ Dept Comp & Informat Sci S-58183 Linkoping Sweden

ISBN: (纸本)1581137427

distributed embedded systems implemented with mixed, event-triggered and time-triggered task sets, which communicate over bus protocols consisting of both static and dynamic phases, are emerging as the new standard in application areas such as automotive electronics. In a previous paper we have developed a holistic timing analysis and scheduling approach for this category of systems. Based on this result, in the present paper new design problems are solved, which we identified as characteristic for such hybrid systems: partitioning of the system functionality into time-triggered and event-triggered domains and the optimization of parameters corresponding to the communication protocol. We addressed both problems in the context of a heuristic which performs mapping and scheduling of the system functionality. We demonstrated the efficiency of the proposed technique with extensive experiments.

关键词： distributed embedded systems real-time systems time-triggered event-triggered mixed communication protocols automotive applications

来源：评论

学校读者我要写书评

暂无评论

Object-oriented cosynthesis of distributed embedded systems

引用

ACM Transactions on Design Automation of Electronic systems 1996年第3期1卷 301-314页

作者： Wolf, Wayne Princeton University Department of Electrical Engineering Princeton University Princeton NJ 08544 United States

This article describes a new hardware-software cosynthesis algorithm that takes advantage of the structure inherent in an object-oriented specification. The algorithm creates a distributed system implementation with arbitrary topology, using the object-oriented structure to partition functionality in addition to scheduling and allocating processes. Process partitioning is an especially important optimization for such systems because the specification will not, in general, take into account the process structure required for efficient execution on the distributed engine. The object-oriented specification naturally provides both coarse-grained and fine-grained partitions of the system. Our algorithm uses that multilevel structure to guide synthesis. Experimental results show that our algorithm takes advantage of the object-oriented specification to quickly converge on high-quality implementations. © 1996 ACM.

关键词： distributed embedded systems Hardware-software codesign Object-oriented co-synthesis

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：