The research project SLA4D-Grid aims to realize a Service Level Agreement (SLA) layer for the D-Grid. This layer will, as shown in the figure, reside between the D-Grid middleware (gLite, Globus, UNICORE) and user level and will be integrated with the already existing infrastructure (e.g. by connecting to selected D-Grid core services). Communities can use the SLA layer either with specific clients or via API. It is a value-added service which has no impact on the present D-Grid utilization, does not interfere with its operation for communities having no SLA needs and thus enables a seamless transition of SLA4D-Grid results into normal operation.

The SLA layer guarantees individual users, entire D-Grid communities and D-Grid ressource providers cost-effectiv ressource use. For this purpose, QoS requests and corresponding offers are brought together mandatory by SLAs. Using the SLA layer and additional D-Grid services like Monitoring or Accounting, SLAs can be created automatically, negotiated and monitored regarding their adherence. In that way, academic as well as industrial users can use D-Grid efficiently according to their business model.

• Bayerische Akademie der Wissenschaften – Leibniz-Rechenzentrum
• con terra – Gesellschaft für Angewandte Informationstechnologie mbH
• Forschungszentrum Jülich GmbH, Jülich Supercomputing Centre
• Forschungszentrum Karlsruhe GmbH, Steinbuch Centre for Computing
• Fraunhofer Gesellschaft zur Förderung der angewandten Forschung e.V., Institut SCAI, Abteilung Bioinformatik
• Leibniz Universität Hannover, Regionales Rechenzentrum für Niedersachsen
• Rheinische Friedrich-Wilhelms-Universität Bonn, Institut für Informatik IV
• Sun Microsystems GmbH, Eco and Virtualization Services
• Technische Universität Berlin (TUB), Fachbereich Komplexe und Verteilte IT-Systeme
• Technische Universität Dortmund, IT und Medien Centrum (Konsortialführer)
• Universität Stuttgart, Höchstleistungsrechenzentrum Stuttgart
• NEC Europe Ltd.

• Duration: June 2009 to May 2012
• Website: http://www.sla4d-grid.de/ [1]
• Förderkennziffer 01IG09013E des BMBF