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Overview of OGSA-DAI and Its Evolution: Insights from the e-Science All Hands Meeting

This presentation, delivered by Neil Chue Hong at the e-Science All Hands Meeting in September 2005, provides an introduction to Grid Computing and the National Grid Service. It outlines the timeline of OGSA-DAI development from 2003 to 2005, including key releases and their implications for users. The slide deck discusses advancements in data services, the integration of security measures, and ongoing projects utilizing OGSA-DAI. It also highlights support resources, training courses, and the trajectory for future developments within the framework.

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Overview of OGSA-DAI and Its Evolution: Insights from the e-Science All Hands Meeting

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Presentation Transcript

  1. OGSA-DAI Current Version Guy Warner NeSC Training Team

  2. Acknowledgement • These slides were part of a presentation by Neil Chue Hong at the e-Science All Hands Meeting, Nottingham September 2005. Induction to Grid Computing and the National Grid Service

  3. Timeline 2003 2004 2005 OGSA-DAI WSRF 1.0 OGSI Release 6  Release 1 Release 3.1 OGSA-DAI WS-I 1.0/ OGSA-DAI WS-I 1.1 (OMII) Release 1 interim Release 4 Release 2 Release 2 interim Release 5 Release 3

  4. Our stakeholders • OMII • Current version of OGSA-DAI WS-I 1.0 distribution runs on OMII • Release 1.1 due out soon • Issues when security is introduced • Globus • WSRF 0.9.6 distribution bundled with GT4.0 • WSRF 1.0 distribution bundled with GT4.0.1 • Projects • Number of projects have used/use/will use OGSA-DAI

  5. SOAP GDS GDS GDS Out with the old… Client Client Client Toolkit API DAISGR Server GDSF GDSF GDSF Relational XML Files Data

  6. Client Generic Client Toolkit API WSRF WS-I SOAP Data Service Data Service WS-I WSRF DAI Core DSR DSR DSR Relational XML Files … in with the new! Client Server Data

  7. Changes in moving to WSRF/WS-I • Registry component (DAISGR) no longer supported • Hope to leverage of third party registration services • GRIMOIRES (http://www.omii.ac.uk/mp/mp_grimoires.htm) • Others … • GDS/GDSF roles combined • Use data services • Currently static services but • Reconfigurable services • Improvements to the GDS • Data resource abstraction decoupled from the service • Renaming (consistent naming across platform versions) • Ability to enforce control flow constraints (ordering activities) • Refactored exception framework • Temporary set-backs (we promise we’ll fix them) • No security model • No concurrency • Previously used GDSs for concurrency • Support now moving to the engine

  8. Further information • The OGSA-DAI Project Site: • http://www.ogsadai.org.uk • The DAIS-WG site: • http://forge.gridforum.org/projects/dais-wg/ • OGSA-DAI Users Mailing list • users@ogsadai.org.uk • General discussion on grid DAI matters • Formal support for OGSA-DAI releases • http://www.ogsadai.org.uk/support • support@ogsadai.org.uk • OGSA-DAI training courses

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