1. 1 OGSA-WG Use Cases Editor: Jeffrin J. Von Reich Hewlett Packard

2. 2 Outline Introduction Use cases for OGSA OGSA requirements Next steps

3. 3 OGSA-WG Use Case Scope To produce and document the use cases that drive the definition and prioritization of OGSA components, as well as document the rationale for our choices. We want to use this to To identify requirements and prioritize OGSA ( services, hosting environments,protocol bindings,interoperability …) To define standard OGSA profiles ( i.e., sets of OGSA components that meet specific set of requirements. ) To define relationships between GGF and other standards

4. 4 How use cases were/will be used Commercial Data Center Data Sharing Data Management Analyze & Extract Evaluate & Prioritize OGSA-DAI OGSA-WG Existing or new WGs Dispatch Use cases Requirements (Functions) Mechanism (Services) DAIS-WG interface OGSA Usecase OGSA Architecture OGSA roadmap

5. 5 How are use cases submitted Preliminary review by OGSA-WG Detailed Review for Content, Language and Format Contributors submit use cases to OGSA mailing list or OGSA use case editor - New use cases Use Cases entered to the second tier use case document - Raw use cases Use Cases entered into the main use case document - Reviewed use cases

6. 6 Outline Introduction Use cases for OGSA Reviewed use cases Second Tier use cases New use cases OGSA requirements Next steps

7. 7 Reviewed Use Cases - I Document : GWD-I (draft-ggf-ogsa-usecase-2.0), Open Grid Services Architecture Use Cases Science Grid Use Cases Severe Storm Modeling (Dennis Gannon) National Fusion Collaboratory ( Kate Keahey ) Commercial Grid Use Cases Commercial Data Center ( Hiro Kishimoto, Andreas Savva, David Snelling ) Online Media and Entertainment (Tan Lu, Boas Betzler ) Grid Resource Reseller ( Jon MacLaren, William Lee ) Inter Grid ( Jeffrin J. Von Reich )

8. 8 Reviewed Use Cases – II Document : GWD-I (draft-ggf-ogsa-usecase-2.0), Open Grid Services Architecture Use Cases Grid Technology Use Cases Service-Based Distributed Query Processing ( Nedim Alpdemir, Norman Paton ) Grid Workflow ( Takuya Araki) Interactive Grids ( Jeffrin J. Von Reich) Grid Lite (Jeffrin J. Von Reich ) WG use cases Persistent archives (PA RG) Mutual Authorisation (SAAA WG ) Resource Usage Service ( RUS WG )

9. 9 Second Tier Use Cases Document : GWD-I (draft-ggf-ogsa-tier2-usecase-2), OGSA Second Tier Use Cases Science Grid Use Cases HLA-based Distributed Simulation Usecase ( Pierluigi Ritrovato ) Grid Monitoring Architecture Use Case - ( Abdeslem Djaoui & Steve Fisher ( RAL), James Magowan & Paul Taylor (IBM UK ), Brian Tierney ( LBNL ) ) Commercial Grid Use Cases IT Infrastructure and Management ( Ravi Subramaniam ) The Learning GRID ( Pierluigi Ritrovato ) GRID based ASP for Business ( Pierluigi Ritrovato ) WG Use Cases Application Use Cases (P2P WG) Reality Grid ( GRAAP WG)

10. 10 New Use Cases HLA-based Distributed Simulation Usecase Grid Monitoring Architecture Use Case (from EU grid ) The Learning GRID GRID based ASP for Business

11. 11 Outline Introduction Use cases for OGSA OGSA requirements Examples of functionality required by use cases Examples of services not currently explored yet Next steps

12. 12 E.g. OGSA Functions from use cases Metering and accounting ( for e.g.from RUS requirements ) Discovery, Name Resolution and brokering Scheduling and Reservation Virtual organizations Monitoring Security Collaboration Policy Program execution standards Content Caching and synchronisation Logging Proxy clients Transport Management Grid interoperability Maintainability Life cycle manageability Data management Service orchestration Administration Fault handling Session management Bulk Operations with Minimal commands

13. 13 E.g. of largely unexplored OGSA Services Web-service access interfaces (for e.g. Virtual Portal use case req.) Proxy client services( Grid lite) Content Caching and synchronisation ( P2P) Session management ( Interactive grid) Transport Management ( Interactive grid) Grid interoperability ( Inter grids ) Maintainability ( Inter grid) Life cycle manageability ( Commercial Data Center )

14. 14 Outline Introduction Use cases for OGSA OGSA requirements Next steps

15. 15 Next Steps Use cases First draft enters 30 day public comment period Review and complete the second tier use cases Analyze and extract requirements (functions/services) from use cases Compare and evaluate with the current architecture to understand unsatisfied requirements and unexplored functions/services Start of architecture work around unexplored functions Information for use case contributors. Weekly tele-conferences on Monday and Thursday (may change) Interim F2F meeting (April or May) Use the use case template to give use cases