CERN 1 DataGrid Architecture Group Bob Jones CERN.

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Presentation transcript:

CERN 1 DataGrid Architecture Group Bob Jones CERN

Jan EU DataGrid - Architecture Group 2 Background l Architecture Task Force (ATF) German Cancio, CERN Steve M. Fisher, RAL (chair) Tim Folkes, RAL Francesco Giacomini, INFN Wolfgang Hoschek, CERN Dave Kelsey, RAL Brian L. Tierney, LBL/CERN 2 versions ( March & July 2001) of the architecture document drafted active until PM9 - emphasis then shifted to testbed 1 l D12.4 deliverable (PM12) New architecture document written based on ATFv2 and individual WP architecture/design documents

CERN Jan EU DataGrid - Architecture Group 3 Some Lessons learnt from testbed 1 & D12.4 l Some concepts remain vague e.g. what do we really mean by interactive jobs? l Some boundaries are unclear Between components and between work-packages e.g. are we certain about the scope/functionality of a Storage Element? l Some requirements are not addressed e.g. anonymous users l The various software components are not yet fully integrated e.g. do the Storage Elements, Computing Elements & Information System work in unison? l Need better links with the application groups and sw integrators Ensure priorities are addressed and a deployable architecture is defined l Short term/ Long term trade-offs Need to satisfy the short-term needs of the testbed without jeopardizing future directions e.g. do we patch code now that we know will be replaced in the next release?

CERN Jan EU DataGrid - Architecture Group 4 Mandate Modify D12.4 to clarify then rationalise the interfaces & dependencies of the different components with a view to the requirements for testbed 2 Take into account: Reviewers comments We currently don’t have answers to all the questions asked Experiences from testbed 1 Applications (D8.2) & integrators (D6.4) Future directions in underlying toolkits e.g. Globus developments, & Grid Open Services Architecture Changing requirements from the Application Groups e.g. move towards common higher-level interface Look for convergence with architectures being proposed for other related Grid projects e.g. PPDG/GriPhyN to enable inter-operability

CERN Jan EU DataGrid - Architecture Group 5 Proposed Composition Technical coordinator (chair) Middleware: WP1, WP2, WP3, WP4, WP5 Networking: WP7 Integration & deployment: WP6 Security: AAA Applications: WP8, WP9, WP10 Consultants grid gurus and architects from related Grid projects Total: ~15 members

CERN Jan EU DataGrid - Architecture Group 6 Organisation l Members names to be finalised this week l First meeting on Thursday 7 th March in Paris l Subsequent meetings approximately 1 per month l Participants will be expected to work outside the meetings Consult with WP colleagues to assure information flow Prepare material for the meetings and D12.4 document Discuss with architecture group colleagues