Architecture: Open Grid Services Architecture OGSA WG

1
Architecture Open Grid Services
Architecture (OGSA) WG

• Co-chairs
• Hiro Kishimoto (Fujitsu), Ian Foster (Argonne
  National Laboratory)
• Secretary
• Andreas Savva (Fujitsu)
• Goals
• OGSA is open service-oriented architecture based
  on Web services for addressing Grid scenarios
• OGSA is GGFs flagship architecture and the
  blueprint for industry standard grid computing
• Support the interoperability of discrete,
  independently developed services
• Define framework for Grid core services
• Show the community clear strategic direction of
  GGF

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What is OGSA

• Open service-oriented architecture based on Web
  services for addressing Grid scenarios
• Resources as First Class Entities
• Dynamic resource creation and destruction
• Component-oriented architecture
• Interchangeable components
• Meta OS functionalities
• Distributed and heterogeneous environment
• A rendering of these functions, based on Web
  service architecture and specifications

3
OGSA Process

• Use Case Driven
• 21 Detailed Use Cases ( 6 pages each)
• Distributed Specification and Standardization
• Identify and/or develop open and accessible
  standard specifications
• Active current work in GGF, OASIS, W3C, and
  DMTF.
• Design Team Working Model
• Facilitate cross fertilization within and outside
  GGF.
• Focus mind share (the most valuable commodity)
• e.g. DAIS-WG and OGSA-Data Design Team
• Iterative Refinement
• Abstract service evolving to concrete
  specifications

4
OGSA Formation

• OGSA-WG
• Designs overall architecture
• Integrates and adjust design-teams output
• OGSA-WG design teams
• Domain expert sub-groups within OGSA
• May include co-chairs of other WG/RGs
• Output is included in OGSA document
• Relation to other WG/RGs
• Explain OGSAs approach and get feedback
• Consign specification design work
• Two way street OGSA-WG willing to receive
  innovative ideas and reflect in OGSA architecture
  
• Take on a recommendation spec development
• Propose to create new WG to spec development

5
OGSA History

• Announced at GGF4 (02/2)
• WG created (02/9)
• GGF events and 12 more interim F2F meetings
• 3 regular weekly teleconferences (M, W 2)
• gt 300 mailing list subscribers
• Declared as GGFs flagship architecture at GGF10
  (04/3)

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OGSA-WG Accomplishments at GGF-13

• One outreach session for activity update
• Nine workshop style design team sessions
• Three WG charter BoF sessions in order to spawn
  new WGs
• Three GGF documents publication
• OGSA profile development
• Joint review session with EGA about OGSA
• Get more supporters and involvements

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OGSA-WG GGF documents publication

• Usecase document (tier 1)
• Open Grid Services Architecture Use Cases
  (GFD.29)
• Architecture documents v1.0
• The Open Grid Services Architecture (GFD.30)
• OGSA glossary v1.0
• OGSA Glossary of Terms (GFD.44)
• Resource management by CMM-WG
• Resource Management in OGSA (GFD.45)

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OGSA-WG Profile Development

• OGSA profile
• Implementable interoperable recommendations
• Normatively refers set of standards specs by
  specific version with explicit limitations and
  requirements
• OGSA basic profile
• Define stable Web Services infrastructure
• OGSA-WG is now working on WSRF-based profile
• Draft spec is published at GGF13

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OGSA document structure
Architecture Glossary
Usecase document
inform and guide
Scenario
Root document
Service Description
feedback
inform and guide
consistent
feedback
Candidate Profile
Profile
informational
OGSA-WG documents
refer
Proposed recomendation
Documents produced By other GGF WGs or Another
SDOs
Actual specs
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OGSA-WG Future Plans

• Three documents to submission for public comment
• OGSA basic profile (recommendation)
• OGSA profile template (informational)
• OGSA roadmap (informational)
• Interim F2F meeting early May
• 3 weekly teleconferences
• Support smooth new 3 WGs launch
• Evangelize OGSA within and outside GGF

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OGSA-WG call to action

• Review OGSA documents and comment
• Input on priorities requirements, ideally based
  on experiences with real implementations
  deployments
• Interoperability experiences
• OGSA basic profile early adopter
• Join OGSA activities
• Visit our website (you can access everything!)
• Subscribe our mailing list
• Join our weekly teleconferences
• Join our interim F2F meeting