IEE Proceedings - Software

Grid computing is a computational concept based on an infrastructure that integrates and collaborates the use of high end computers, networks, databases and scientific instruments owned and managed by several organisations. It involves large amounts of data and computing which require secure and reliable resource sharing across organisational domains. Despite its high computing performance orienta... View full abstract»

The authors take a broad view that ultimately Grid- or Web-services must be located via personalised, semantic-rich discovery processes. They argue that such processes must rely on the storage of arbitrary metadata about services that originates from both service providers and service users. Examples of such metadata are reliability metrics, quality of service data or semantic service description ... View full abstract»

Performance modelling can be used throughout the development, deployment and maintenance of system hardware and application software. In this work the authors illustrate three uses of performance modelling on large-scale systems: the verification of performance during system installation, the comparison of two large-scale systems, and the prediction of performance on possible future architectures.... View full abstract»

The Grid Information Service (GIS) is one of the Grid Common Services which make up the basic functions belonging to Grids. This service offers a resource discovery mechanism, of which an implementation is provided by the Monitoring and Discovery Service (MDS-2), which is part of the Globus Toolkit®. Grid applications are typically the users of this resource discovery mechanism; knowledge is t... View full abstract»

The author looks at trends in software and systems, and the current and likely implications of these trends on the discipline of performance engineering. In particular, he examines software complexity growth and its consequences for performance engineering for enhanced understanding, more efficient analysis and effective performance improvement. The pressures for adaptive and autonomous systems in... View full abstract»

Mobile ad hoc networks (MANETs) have dynamic irregular topologies by nature, and suffer from inherent limitations such as limited bandwidth and power. A number of routing protocols have been proposed in the past few years to deal with these issues efficiently. The paper proposes and evaluates a new routing protocol, referred to here as the vector routing protocol (VRP). One of the main features of... View full abstract»

The authors have developed a prototype tool that supports instrumentation of distributed Java applications by on-the-fly deployment of interposition code at user-selectable program points. The paper explores the idea, originated in the Paradyn Performance Consultant, of systematically searching for performance bottlenecks by progressive refinement. They present the callgraph search algorithm in de... View full abstract»