2. Final Exercise Group 9 Daniel Tiggemann Carlos Borrego Shiv Kaushal Luigi Dini Oisin Curran Eleana Asimakopoulou The 3 rd International Summer School on Grid Computing Vico Equense 22 July 2005

3. Earth Observation y=f(x 1,x 2,x 3,...,x 11 ) Parameters estimation

4. Inversion Algorithm-2C LUT (look-up table) using RRMSE (relative mean square error) +55 +36 0 -36 -55 +55 +36 0 -36 -55 (Privette, 1994) Vegetation Parameters Estimate

5. The Current Approach Large demand for information from other bodies Not enough storage Too much information Not enough time Need help Earth observation centre Space observation centre No communication Need help Many images to process Civil Protection Need information Need for image No real time image Parameter Combination Parameter Combination (1-n) database Serial Computing Image Abstraction of the problem:

6. The Proposed Solution How to use grid to solve our problem: grid Site CE SE Parameter Combination Parameter Combination (1-n) Info Site CE SEInfo Site CE SEInfo Events db Vo Not necessary to define a Web-Service architecture since other technologies provide all our needs Condor – meant just for computing. No solution for Storage Ogsa-dai – Our atomic instance is a file. Too much overhead. Relational DBMS not needed Globus would be also useful but we need more functionallity

7. What g-lite is providing us: Job management Services Workload Management Computing Element Logging and Bookkeeping Data management Services File and Replica catalog File Transfer and Placement Services gLite I/O Information Services R-GMA Service Discovery Security Grid Access Service API Access Services Job Provenance Job Management Services Computing Element Workload Management Package Manager Metadata Catalog Data Services Storage Element Data Management File & Replica Catalog Authorization Security Services Authentication Auditing Information & Monitoring Information & Monitoring Services Application Monitoring Site Proxy Accounting gLite

8. The Progressive Exercise “Search for Knowledge” Three pillars found (Gilda, Globus & Fab Gagliardi) Based on the provided started points Reading off co-ordinates from output EPS files Adjusting arguments to the program to produce next EPS file

9. The Progressive Exercise An animated version can be found at: http://tinyurl.com/9s689http://tinyurl.com/9s689 Progress of discovery and… if regaining the task: Rewrite Scanner client - it was not producing results even when used at points where there was a pillar Automate using Scanner’s program output as Regular program’s input: less time at the command line simply starting the process running and coming back later to review a bunch of graphs in the EPS files Investigate using UNICORE to look at the surface Try the surface provided by the UNICORE system. Especially since it was not limited to 20 results per query

10. Team Contribution ● Project coordinator ● Eleana Asimakopoulou ● gLite experts ● Daniel Tiggemann, Carlos Borrego ● Master of Pillars! ● Shiv Kaushal ● Description of “real-world” reseach problem ● Luigi Dini ● This’n’that ● Oisin Curran

11. Feedback on the School ● We missed more security talks! ● Practical exercise was a bit chaotic! ● Talks get too much into the detail and less general information ● Good social networking! ● Good logistical organisation (...excellent food!) Grazie!