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The Kepler scientific workflow system enables creation, execution and sharing of work-flows across a broad range of scientific and engineering disciplines while also facilitating remote and distributed execution of workflows. In this paper, we present and compare different approaches to distributed execution of workflows using the Kepler environment,(More)
This paper describes the " Fusion Plasma Application " which is developed within the " Interactive European Grid " (int.eu.grid), making use of its architecture to produce interactive visualisation of a distributed simulation executing on the grid. In properly combining and, where necessary , adopting the building blocks " Migrating Desktop " (MD), "(More)
In this paper we describe the architecture of a Platform as a Service (PaaS) oriented to computing and data analysis. In order to clarify the choices we made, we explain the features using practical examples, applied to several known usage patterns in the area of HEP computing. The proposed architecture is devised to provide researchers with a unified view(More)