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Service Oriented Collaboration and Community Grids

This symposium discusses the philosophy and implementation of collaborative grid services for service-oriented collaboration and community grids. Topics include the role of services, data transformation, metadata, filter services, agent systems, and collaboration through message replication.

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Service Oriented Collaboration and Community Grids

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  1. Service Oriented Collaboration and Community Grids CTS2006 May 17 2006 2006 International Symposium on Collaborative Technologies and Systems http://www.engr.udayton.edu/faculty/wsmari/cts06/ Las Vegas NV Geoffrey Fox Anabas Inc. and Computer Science, Informatics, Physics Pervasive Technology Laboratories Indiana University Bloomington IN 47401 gcf@indiana.edu http://www.infomall.org

  2. SS Database SS SS SS SS SS SS SS Raw Data  Data  Information  Knowledge  Wisdom AnotherGrid Decisions AnotherGrid SS SS SS SS FS FS OS MD MD FS Portal Portal OS OS FS OS SOAP Messages OS FS FS FS AnotherService FS FS MD MD OS MD OS OS FS Other Service FS FS FS FS MD OS OS OS FS FS FS MD MD FS Filter Service OS AnotherGrid FS MetaData FS FS FS MD Sensor Service SS SS SS SS SS SS SS SS SS SS AnotherService

  3. Grid Service Philosophy I • Services receive data in SOAP messages, manipulate it and produce transformed data as further messages • Knowledge is created from information by services • Information is created from data by services • Semantic Grid comesfrom building metadata rich systems of services • Meta-data is carried in SOAP messages • The Grid enhances Web services with semantically rich system and application specific management • One must exploit and work around the different approaches to meta-data (state) and their manipulation in Web Services

  4. Grid Service Philosophy II • There are a horde of support services supplying security, collaboration, database access, user interfaces • The support services are either associated with system or application where the former are WS-* and GS-* which implicitly or explicitly define many support services • There are generalized filter services which are applications that accept messages and produce new messages with some data derived from that in input • Simulations (including PDE’s and reactive systems) • Data-mining • Transformations • Agents • Reasoning are all termed filters here • Agent Systems are a special case of Grids • Peer-to-peer systems can be built as a Grid with particular discovery and messaging strategies

  5. Grid Service Philosophy III • Filters can be a workflow which means they are “just collections of other simpler services” • Grids are distributed systems that accept distributed messages and produce distributed result messages • A service or a workflow is a special case of a Grid • A collection of services on a multi-core chip is a Grid • Sensors or Instruments are “managed” by services; they may accept non SOAP control messages and produce data as messages (that are not usually SOAP) • Collaborative services share either input (replicated model) or output ports • Collaboration involves a sharing messaging system (naturally publish-subscribe) and a control formalism (XGSP is SOAP compatible H323/SIP)

  6. SS Database SS SS SS SS Portal SS SS SS Raw Data  Data  Information  Knowledge  Wisdom AnotherGrid Decisions AnotherGrid SS SS SS SS FS FS OS MD MD FS Portal Portal OS OS OS FS SOAP Messages OS FS FS FS AnotherService FS FS MD MD OS OS OS FS MD Other Service FS FS FS FS FS MD OS OS OS FS FS FS FS MD FS Filter Service OS AnotherGrid FS MetaData FS FS FS MD Sensor Service SS SS SS SS SS SS SS SS SS Collaboration by Message Replication AnotherService

  7. S S S U U U WSViewer WSDisplay F F F F F F I I I I I I WebService WebService WebService O O O O O O WS Viewer WS Display WS Viewer WSDisplay Master Event(Message)Service OtherParticipants Shared Input Port (Replicated WS) Collaboration with UFIOas User Facing and SFIO as Service Facing Ports

  8. WSDL S U Application orContent source F F WSViewer WSDisplay I I O O Web Service Master WS Viewer WS Display Event(Message)Service OtherParticipants WS Viewer WSDisplay Shared Output Port (Single WS) Collaboration that Can be shared at any point on visualization pipeline

  9. SS Database SS SS SS SS SS SS SS Raw Data  Data  Information  Knowledge  Wisdom AnotherGrid Decisions AnotherGrid SS SS SS SS FS FS OS MD MD FS Portal Portal OS OS FS OS SOAP Messages OS FS FS FS AnotherService FS FS MD MD OS OS FS Other Service FS FS FS FS MD MD OS OS Portal OS FS FS MD MD FS Filter Service OS AnotherGrid FS MetaData FS FS FS MD Sensor Service SS SS SS SS SS SS SS SS SS Collaboration by Message Replication at any point infilter chain SS Shared Display is the “last” filter AnotherService

  10. Video Performance Multiple sessions One session Latency ms 30 frames/sec # Receivers

  11. The Grid and Web Service Institutional Hierarchy 4: Application or Community of Interest (CoI)Specific Services such as “Map Services”, “Run BLAST” or “Simulate a Missile” XBMLXTCE VOTABLE CML CellML 3: Generally Useful Services and Features (OGSA and other GGF, W3C) Such as “Collaborate”, “Access a Database” or “Submit a Job” OGSA GS-*and some WS-* GGF/W3C/….XGSP (Collab) 2: System Services and Features (WS-* from OASIS/W3C/Industry) Handlers like WS-RM, Security, UDDI Registry WS-* fromOASIS/W3C/Industry 1: Container and Run Time (Hosting) Environment (Apache Axis, .NET etc.) Apache Axis.NET etc. Must set standards to get interoperability

  12. The Ten areas covered by the 60 core WS-* Specifications RTI and NCOW needs all of these?

  13. Activities in Global Grid Forum Working Groups RTI and NCOW/NCE needs all of these?

  14. The Global Information Grid Core Enterprise Services

  15. The Core Service Areas I

  16. The Core Service Areas II

  17. BioInformatics Grid Chemical Informatics Grid … … 15: Application Services Sequencing Tools Biocomplexity Simulations 15: Application Services Screening Tools Quantum Calculations Domain Specific Grids/Services 14: Information Instrument/Sensor 11: Portals Services 13: Data Access/Storage 17: Collaboration 12: Computing 9: Management 18: Scheduling 10: Policy 4: Notification 8:Metadata 7: Discovery Core Low Level Grid Services 5: Workflow 6: Security 3: Messaging 9: Management Physical Network (monitored by FS16) Using the Grid of Grids and Core Services of previous table to build Multiple application grids re-using common components

  18. Some Conclusions I • One can map 7.5 out of 9 NCOW/NCE and GiG core capabilities into Web Service (WS-*) and Grid (GS-*) architecture and core services • Analysis of Grids in NCOW/NCE document inaccurate (confuse Grids and Globus and only consider early activities) • Some “mismatches” on both NCOW and Grid sides • GS-*/WS-* do not have collaboration and miss some messaging • NCOW does not have at core level system metadata and resource/service scheduling and matching • Higher level services of importance include GIS (Geographical Information Systems), Sensors and data-mining

  19. Some Conclusions II • Criticisms of Web services in a paper by Birman seem to be addressed by Grids or reflect immaturity of initial technology implementations • NCOW/NCE does not seem to have any analysis of how to build their systems on WS-*/GS-* technologies in a layered fashion; they do have a layered service architecture so this can be done • They agree with service oriented architecture • They seem to have no process for agreeing to WS-* GS-* or setting other standards for CES • Grid of Grids allows modular architectures and natural treatment of legacy systems • Note Grids, Services and Handlers are all “just” entities with distributed message-based input and output interfaces

  20. Some Next Steps • Anabas Phase II SBIR: • Produce a Grid-based implementation for 9 CES for NCOW adding ECS (Environmental Control Services) and Metadata support (UDDI and WS-Context for C2IEDM etc.) • Produce typical Collaboration, Sensor, Datamining and GIS Grids • Produce a Tool to allow composition of services and grids into (larger) Grids (Systems of Systems) • Community Grids Laboratory: • Continue Grids for Earth Science and Sensors with JPL • Build a “Complete Scientific Method” Grid covering data through wisdom (instrument through publication) and integration of “Web 2.0” tools like del.icio.us

  21. MyResearchDatabase Bibliographic Database Web serviceWrappers Document-enhanced Research Grid Del.icio.us Windows Live Academic Search TraditionalCyberinfrastructure Export:RSS, BibtexEndnote etc. CiteULike Google Scholar Connotea Citeseer Bibsonomy Science.gov Biolicious PubChem Generic Document Tools CMT ConferenceManagement PubMed Manuscript Central Community Tools Integration/Enhancement User Interface etc. Existing User Interface New Document-enhanced Research Tools Existing Document-basedResearch Tools

  22. Location of software for Grid Projects in Community Grids Laboratory • htpp://www.naradabrokering.org provides Web service (and JMS) compliant distributed publish-subscribe messaging (software overlay network) • htpp://www.globlmmcs.org is a service oriented (Grid) collaboration environment (audio-video conferencing) • http://www.crisisgrid.org is an OGC (open geospatial consortium) Geographical Information System (GIS) compliant GIS and Sensor Grid (with POLIS center) • http://www.opengrids.org has WS-Context, Extended UDDI etc. • The work is still in progress but NaradaBrokering is quite mature • All software is open source and freely available

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