Savas Parastatidis

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The UK e-Science Programme is a £250M, 5 year initiative which has funded over 100 projects. These application-led projects are underpinned by an emerging set of core middleware services that allow the coordinated, collaborative use of distributed resources. This set of middleware services runs on top of the research network and beneath the applications we(More)
There has been a lot of discussion in the community concerning the relationship between Web and Grid Services. This document presents an analysis of the Grid architecture and its relationship to the Web Services Architecture. It presents our views on the current version of the OGSI specification and then goes on to propose a different mapping of the Grid(More)
The SOAP Service Description Language (SSDL) is a SOAP-centric contract definition language for Web Services. SSDL provides the base framework for a range of protocol description frameworks which at one end of the spectrum can be a simpler, SOAP-focussed, direct replacement for WSDL while at the other end of the spectrum a more expressive contract(More)
Dynasoar is an infrastructure for dynamically deploying Web services over a grid or the Internet. It enables an approach to grid computing in which distributed applications are built around services instead of jobs. Dynasoar automatically deploys a service on an available host if no existing deployments exist, or if performance requirements cannot be met by(More)
NaradaBrokering provides a messaging abstraction that allows it to provide message-related capabilities in a transparent fashion. These capabilities include message-based security, time and causal ordering, compression, virtualization of transport protocol and addressing, and fault tolerance related functionalities. NaradaBrokering – combined with further(More)