Ahmed Shiraz Memon

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– In the last couple of years, many e-Science infrastructures have begun to offer production services to e-Scientists with an increasing number of applications that require access to different kinds of computational resources. Within Europe two rather different multinational e-Science infrastructures evolved over time namely Distributed European(More)
In a distributed Grid environment with ambitious service demands the job submission and management interfaces provide functionality of major importance. Emerging e-Science and Grid infrastructures such as EGEE and DEISA rely on highly available services that are capable of managing scientific jobs. It is the adoption of emerging open standard interfaces(More)
In recent years, the Virtual Organization Membership Service (VOMS) emerged within Grid infrastructures providing dynamic, fine-grained, access control needed to enable resource sharing across Virtual Organization (VOs). VOMS allows to manage authorization information in a VO scope to enforce agreements established between VOs and resource owners. VOMS is(More)
The wide variety of scientific user communities work with data since many years and thus have already a wide variety of data infrastructures in production today. The aim of this paper is thus not to create one new general data architecture that would fail to be adopted by each and any individual user community. Instead this contribution aims to design a(More)
The Distributed Computing Infrastructure (DCI) has become an indispensable tool for scientific research. Such infrastructures are composed of many independent services that are managed by autonomous service providers. The discovery of services is therefore a primary function, which is a precursor for enabling efficient workflows that utilise multiple(More)