A PPARC funded project

Architecture Appeal

Guy RixonAstroGrid Consortium meetingApril 2004

2004-04-28 AstroGrid architecture 2

Current stateWe have an architectureIt’s not written down coherentlyWe all know and understand itWe all disagree about detailsDisagreement hampers integrationNeed to document the architecture To focus iteration 6+ To plan AstroGrid 2 To help get the details right To help prove that AstroGrid 1 is a success

2004-04-28 AstroGrid architecture 3

Appeal for help

Church architecture appeal

Please give generously!

We need your help to document the architecture.

(And to keep the description up to date.)

AstroGrid

2004-04-28 AstroGrid architecture 4

Your help neededDone In hand

Required for I5 description

‘Requirements’ Science cases (on wiki already) Use cases (on wiki; may need updating) Implementation cases

‘Architecture’ Component lists (in RUP sense) (published) Java APIs W/S interfaces Deployment diagrams Semantic descriptions of components

2004-04-28 AstroGrid architecture 5

Three kinds of use caseScience case

Little/no (IT) technical detail Experiment leading to scientific publication For strategic planning

Use case More technical detail Meaningful to end user For planning user interactions

Implementation case Full technical detail Opaque to end user For planning development

Science cases contain use cases contain implementation cases

2004-04-28 AstroGrid architecture 6

…and some questionsDo you need an architecture doc to do Itn 6?If so, do you need it before or after planning?Do you need the Itn 6 architecture separately from the as-built description of Itn5?Do you need it for Itn 7 & 8?Current planning is to write up the AG-2 architecture before the current, as-built stuff.

Is this a problem for you?