ARDA Final Report (CERN-LCG-2003-033)
Documents page
Chair: LATBauerdick
Observation:
• Different LHC experiments have developed packages (AliEn, Ganga,
Dirac, Impala,Boss, Grappa, Magda…) that either sit on top, complement,
expand or parallel the functionality of the Grid middleware (VDT, EDG…)
• At this time the LCG is coming to grips with the middleware development requirements
• There is an expectation that an OGSA Services Architecture will be the basis
for future development.
•
The Experiments need to specify in their TDR’s, baselines, fallback and development
strategies
Motivation:
• To agree on requirements as laid out in a first step by recent
work within the GAG and identify commonalities within the current projects which
might allow the LCG (both in the AA and GTA areas) to provide a focus of effort.
• To provide guidance to the LCG on future Middleware development directions
and interfacing work to match the experiment requirements
• To build on the richness of the current technical solutions to avoid duplication
of efforts
• To clearly identify the roles and responsibilities of the components/layers/
services in the experiment DA planning
• To give guidance to the community on the expected division of work
between the experiments, the LCG and the external projects.
Mandate:
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To review the current Distributed Analysis (DA)activities and to capture their architectures in a consistent way |
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To confront these existing projects to the HEPCAL II use cases and the user's potential work environments in order to explore potential shortcomings |
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To consider the interfaces between Grid, LCG and experiment-specific services
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To confront the current projects with critical GRID areas |
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To develop a roadmap specifying wherever possible the architecture, the components and potential sources of deliverables to guide the medium term (2 year) work of the LCG and the DA planning in the experiments |
Schedule
The RTAG shall provide a draft report to the SC2 by September
12.
It should contain initial guidance to the LCG and the experiments to inform
the September LHCC manpower review, in particular on the expected responsibilities
of
The final RTAG report is expected for October 03.
Makeup
The RTAG shall be composed of
If not included above, the RTAG shall co-opt or invite representatives from the major Distributed Analysis projects and non-LHC running experiments with DA experience.
The members are:
Alice: Fons Rademakers and Predrag Buncic, Atlas: Roger Jones and Rob Gardner, CMS: Lothar Bauerdick and Lucia Silvestris, LHCb: Philippe Charpentier and Andrei Tsaregorodtsev; LCG GTA: David Foster, LCG AA: Torre Wenaus, GAG Federico Carminati
