Ahmed Shiraz Memon

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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 provision and processing of information in an e- Science environment are essential tasks. For this purpose, most environments provide information services which aggregate data from different information sources and make it available to users and other services. In this paper we present CIS, an extensible information service with an underlying unified(More)
The term `big data analytics' emerged in order to engage in the ever increasing amount of scientific and engineering data with general analytics techniques that support the often more domain-specific data analysis process. It is recognized that the big data challenge can only be adequately addressed when knowledge of various different fields such as data(More)
In the last couple of years, many e-Science infrastructures have begun to offer production services to eScientists with an increasing number of applications that require access to different kinds of computational resources. Within Europe two rather different multi-national e-Science infrastructures evolved over time namely Distributed European(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)