Abstract
The D-Grid is a German national academic Grid initiative, which has been established in 2004. Since then, a variety of resource providers offer resources and services to a large and heterogeneous group of user communities. First, this chapter describes in detail the D-Grid e-Infrastructure as it is operated today. Apart from a brief historical digression, D-Grid’s organizational structure and its infrastructure are introduced, complemented by the description of two example user communities. Based on the current state, this chapter then provides a discussion on how D-Grid’s future may look like with virtualization and Cloud computing striding ahead. To this end, a prototype system with coexisting Grid and Cloud middleware is introduced, challenges at resource level are identified, and possible solutions are highlighted. Furthermore, the integration of state-of-the-art service level management, which enables D-Grid providers to guarantee distinct service levels, is discussed.
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A gGmbH is a nonprofit company with limited liability.
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A combination of compute, network, and storage resources including Grid middleware layers and value-added services.
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http://www.bw-grid.de/, a regional Grid in Baden-Württemberg, Germany.
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VO Membership Registration Service, see http://www.fnal.gov/docs/products/vomrs/.
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Required for gLite services and periodically synchronized with VOMRS.
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Experiences at the TU Dortmund University have shown that of the proposed setup for reference systems scales up to 2,000 cores.
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Grid security infrastructure-enabled SSH.
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DGRZR commenced operations in April 2008 and currently offers ∼2,000 compute cores and 125 Terabyte of mass storage to D-Grid users.
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All information about users, execution hosts, and virtual machines is stored in a single database.
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The Distinguished Name (DN) of the X.509 certificate is used.
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Freitag, S., Wieder, P. (2011). The German Grid Initiative D-Grid: Current State and Future Perspectives. In: Yang, X., Wang, L., Jie, W. (eds) Guide to e-Science. Computer Communications and Networks. Springer, London. https://doi.org/10.1007/978-0-85729-439-5_2
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DOI: https://doi.org/10.1007/978-0-85729-439-5_2
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