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AstroGrid Oversight Committee
MRC, London30 July, 2002
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30.07.2002 AstroGrid Oversight Committee
AstroGrid and the Unified Software Development Process
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30.07.2002 AstroGrid Oversight Committee
Options
Work Package Traditional Grand design Integrate at end
Unified Process ‘Agile’ process Iterative Multiple releases
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30.07.2002 AstroGrid Oversight Committee
Work Package approach: Pros
Institute ‘ownership’Component supportEasier to focus on R&D
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30.07.2002 AstroGrid Oversight Committee
Work Package approach: Cons
Development out of sequenceMid-term integration/release difficult User does not see whole product until
end
Development not risk-basedLess knowledge spreadDifficult to change direction Or to see the need for a change
~50% more resources needed
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30.07.2002 AstroGrid Oversight Committee
Unified ProcessArchitecture-centricUse-case drivenIterative
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30.07.2002 AstroGrid Oversight Committee
Overview
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30.07.2002 AstroGrid Oversight Committee
Iterative
~3 month iterationsFull life-cycle each iteration Inception planning Elaboration design Construction code Transition release
Working product release each iteration
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30.07.2002 AstroGrid Oversight Committee
Unified Process: Pros
Iterations Multiple releasesKnowledge spreadWhole-project ‘ownership’Easier to change direction Critical for leading-edge project
‘Right’ software built Right
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30.07.2002 AstroGrid Oversight Committee
Unified Process: Cons
Where is support?More management effort owing to distributed project
Difficult to set targets up front Targets reviewed each iteration
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30.07.2002 AstroGrid Oversight Committee
AstroGrid
AGLI commitment to Unified ProcessConsortium buy-inFocus on delivery of VO
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30.07.2002 AstroGrid Oversight Committee
AstroGrid Personnel
Technical Lead focus on delivery
Project Manager focus on team building, R&D,
interactions
Developers flexible team deployment mixed development and R&D work