Giuseppe Avellino

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In the first phase of the European DataGrid project, the 'workload management' package (WP1) implemented a working prototype, providing users with an environment allowing to define and submit jobs to the Grid, and able to find and use the " best " resources for these jobs. Application users have now been experiencing for about a year with this first release(More)
Application users have now been experiencing for about a year with the standardized resource brokering services provided by the 'workload management' package of the EU DataGrid project (WP1). Understanding, shaping and pushing the limits of the system has provided valuable feedback on both its design and implementation. A digest of the lessons, and " better(More)
Contemporary Grids are characterized by a middleware that provides the necessary virtualization of computation and data resources for the shared working environment of the Grid. In a large-scale view, different middleware technologies and implementations have to coexist. The SOA approach provides the needed architectural backbone for interoperable(More)
Workflows have an increasing role in scientific applications programming and business environment development because they are an effective technology to define composition of different pieces of knowledge, both in the application domain and in the business context. However, workflows are addressed in a number of different perspectives and no consensus has(More)
Internet has allowed the exponential growing of the information available in all knowledge domains. This information is published in a non-coordinated way using different standards and formats. Traditional search engines solve with relative success the needs of most Internet users searching for general purpose information. However, specific users like(More)
Society and business are demanding systems that can securely and cost-effectively exploit opportunities presented by an Internet of Services. To achieve this goal a system must dynamically adapt to its environment and consider multiple and shifting stakeholder concerns such as application functionality, policies and business processes. In this paper we(More)
In the last years we have seen the release of huge amount of resources in the environmental domain. The use of non-formal tags for annotating resources allows simple categorization and search capabilities, but it does not provide the means to create cross-domain annotation and discovery. On the other hand, ontologies are a shared and formal(More)
The growing emergence of large scale distributed computing environments such as computational or data grids, presents new challenges to resource management, which cannot be met by conventional systems that employ relatively static resource models and centralised allocators. A principal consideration of resource management systems is the efficient assignment(More)
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