Objectives Implementation Partnership Way ahead

1. Wide Area Grid Task team(WGISS-20, Kiev )jean-pierre.antikidis@cnes.frCentre Nationa d'Etdudes Spatiales,Programme & Strategy directorate,"Space Information Systesms" • Objectives • Implementation • Partnership • Way ahead Beijing 6th Sept 2004, CNES/J.P.Antikidis

2. Quote: WGISS user chair report, Kiev, Sept 2005 !! • Quote: EC report early 2005, • Software & Services info day,Brussels: • how to deal with the complexity wall ? • How to deal wih the Babel syndrome ? Beijing 6th Sept 2004, CNES/J.P.Antikidis

3. Classical GRID based GRID Beijing 6th Sept 2004, CNES/J.P.Antikidis

4. To day EO large scale objectives World-wide follow-on ozone World-wide follow-on of sea state (MERCATOR) World-wide follow-on of vegetation index World-wide follow-on of crop and food resources GMES programme GEO endeavour .... Can we afford on the long run to pile-up investments as we do today

5. WAG-Objectives WAG stand for Wide Area Grid is in fact nothing new with respect to GRID technology apart from the fact it deals with a particular type of GRID system implementation. In fact GRID concept as derived from Ian foster ideas is basically a set of hardware machines being connected together with basically no pre-specified implementation topology.The major difference in between a “distributed system” and a GRID lies in the fact the hardware organisation and the job handling is not anymore carried out by the application software itself but by a suitable MiddleWare supposed in theory to hide the actual hardware arrangement specificity. =>> WAG experiments should enable testing a Widely shared GRID implementation carrying several EO Applications in a concurent way May prefigure GMES or GEO up-coming generic technical architectures

6. Induced conceptual changes • No more knowledge of information or/and data-bank physical location (an archive is just known to be accessible trough its naming) • No more need to describe the physical connections in between different locations (since fully supported by the underlying GRID) making in theory any world-wide distributed systems easy to implement. • No more physical handling of information sets. This could trigger completly new merchandising concepts (for ex. come close to Telecomm recharge) • No need to know the mapping of user ’software enabling virtual service to be easily created and offered to any-one on an autonomous fashion (virtual stores/services) Beijing 6th Sept 2004, CNES/J.P.Antikidis

7. WAG Data providers User Apl. Data User data WAGApplication GRID Application System designer GRID Beijing 6th Sept 2004, CNES/J.P.Antikidis

8. WGISS WAG Experiments • Archives are not "physically" but logically" described • Processes are described as "Private applications" • The underlying HW layout is managed by an underlying Middleware/Upperware …… …… fMODIS MERIS Experiment Virtual Factory Experiment Beijing 6th Sept 2004, CNES/J.P.Antikidis

9. Beijing 6th Sept 2004, CNES/J.P.Antikidis

10. WAG IMPLEMENTION RULES 1/2 • Each of the partners is bringing some Hw facilities of his own • The partners facilities are patched together and operates as a unique GRID system relying on a suitable (but common) MiddleWare layer • Each of the partner will make use of this “pooled GRID” to develop a given application of his own       Beijing 6th Sept 2004, CNES/J.P.Antikidis

11. WAG IMPLEMENTION RULES 2/2 • Each of the experienced application will make use of the MiddleWare layer but not require any specific GRID tuning or adjustment • Each of the application will be free to decide whether they share the same data with others or not and will not induce any special requirement or “warning” to the other partners to be run • Any of the applications can be submitted to the WAG without a priori knowledge or compatibility requirement with the other tasks (since it is experimental , could happen that resources limitations lead to practical constrains but only with respect to the timing for obtained results. Beijing 6th Sept 2004, CNES/J.P.Antikidis

12. WAG Experiment The Virtual Factory Connect several resource center in a WAG Make Process server available Create a virtual distribution scheme Allow the projection by users of needed process Potential partners: Remote job submitters and users (DC representatives like FAO and UNEP , discussions are taking place with Chinese partners R & D WAG task already engaged at CNES level

13. WAG Experiment ESA-NASA MERIS–MODIS data integration The application should access data available online for integration, using alternative user environments (user interface, processing enviorment …, one defined / operated by NASA, the other defined / operated by ESA) to integrate MERIS/MODIS data. Both application have access to a the MERIS and MODIS “Storage Elements” on the WAG, using secure protocols (e.g. GRIDFTP).)

14. Already engaged: • Concept presentation at WGISS18 => identification as an Application oriented activity to be conducted in close relation with Grid task team • Generation of Task template and overall objectives during 2005 • First discussions having taken place with FAO and ESA WAG Experiment (Action status) Way ahead: Consolidate WAG as a WGISS Task in the frame of thePROJECTS & APPLICATIONS SUB-GROUP Complement the list of potential WAG partners and experiments (CNES, ESA, FAO etc…) Consolidated proposals with respect to the two first experiments headed by ESA (MME) and CNES (VFC) to be established during WGISS21/22 time frame Work out first co-ordination telecons end this year

15. Wide Area Grids is certainly promising ways to integrate heterogeneous resources in a World-wide base fashion , Among potential subjects: # "virtual data bases", # Developing countries applications, # Simple distribution systems etc.. the more players, the more interesting becomes the demonstration ! Beijing 6th Sept 2004, CNES/J.P.Antikidis