|Tuesday, May 8|
|4:00 pm - 5:30 pm|
Dynamic Service Level Agreements (2/2)
Wolfgang Ziegler, Omer Rana, Philipp Weider and Karim Djemame
As the Grid evolves to become an infrastructure for providing and consuming services in research and commercial environments, mechanisms are needed to agree on the objectives and the quality of such service provision. This could be facilitated by means of electronic contracts between service consumers and one or more service provider(s), in order to achieve the necessary reliability and commitment on both sides. Such contracts help to establish a well-defined relationship between a service provider and a client in the context of a particular service provision. This is especially important if the services or resources to be used come from different administrative domains, or if commercial service provision needs to be supported.
Service Level Agreements (SLA) seem to be a promising approach to establishing these kinds of guarantees and relationships. WS-Agreement – a language to define SLAs and a protocol to establish the SLAs defined by the OGF GRAAP-WG - is close to be published as proposed recommendation. As WS-Agreement is already being used in a number of projects new use-cases and requirements for the process of creating an SLA were identified. It turned out that there are a number of use cases where a more sophisticated process for negotiation is required to reach an SLA. Also, once an SLA has been created there are situations, where the SLA has to be modified afterwards to adopt both to changing requirements from the clint or changing capabilities of a service provider. As a solution for these scenarios dynamic SLAs came into discussion.
This workshop addresses the use-cases and requirements as well as current approaches taken in different projects.
This half-day workshop will consist of a set of presentations on ongoing work related to dynamic Service Level Agreements in a single track.
Presentation of different use-cases, requirements, and approaches for the definition and management of dynamic SLAs. A substantial part of the workshop will be dedicated to discussions and a summary session where we will prepare the creation of a document that will be fed into the current discussion on negotiation of agreements in the GRAAP-WP. All presentations as well as the use-case and requirements paper later will be available online.
Session 2: (90 minutes)
5 minutes: Intro
20 minutes: Talk 5: OntoGrid (Shamimabi Paurobally)
20 minutes: Talk 6: NextGRID (Philipp Wieder)
20 minutes: Talk 7: Alcatel-Lucent (Antoine Pichot)
20 minutes: Panel - Chairs: Omer/Wolfgang -- 3 panelists: Toshi Nakata (NEC Japan), Rizos Sakellariou (Manchester), Matthias Hovestadt (TU Berlin)
5 minutes: Concluding remarks + future directions
Location: Charter Suite 2
| Slides: Performance comparison between a 2 phases and a 3 phases Negotiation Protocol|
| Slides: SLAs and Negotiation in Ontogrid: Scenarios and Requirements|
| Slides: Technical Demonstrator SLA-driven Service Management|