Group 1 Presentation

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Group 1 Presentation

• Mauro Barbieri
• Rabih Bashroush
• Mauro Cancian
• Giacinto Donvito
• Sven Hermann
• Rainer Schmidt
• Peter Turner

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Cross-matching Astronomical Catalogues

• Cross Matching (CM) of astronomical sources
  detected at different wavelenghts and present in
  differents catalogs (or images)
• Why need the GRID?
• CE Splitting the CM in various parallels tasks
  reduce the execution time
• SE The catalogs considered contains few
  billions of sources each
• GDSE / OGSA-DAI The catalogs are stored in
  differents relational databases

• At present the work is done using ad hoc written
  program running on 1 machine
• CM for an area of 5x10-4 of the total sky need
  about 2 hours of CPU time on a P4 2.8GHz, this
  translate to about 170 day of CPU
• Applications
• GAIA ESA astrometric mission data validation
• OMEGATRANS RATS survey for detection of
  extrasolar planets
• on flight image reduction for the instruments of
  second generation mounted on VLT at ESO

3
Grid Technology Solution

• GLite/MW
• High-Throughput / Access more CPUs
• DAG-Man
• Dependencies of Jobs (Pixels)
• Condor
• Scheduling Jobs
• GDSE / OGSA-DAI
• Accessing astronomical databases
• JAM / Webservices
• Job Monitoring Application

4
DAG-man
4
5
6
3
7
1
8
2
9
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Accessing Databases
RB
UI
WN
6
Prog. Exercise Status 1/2

• Java Service -gt Web Service
• GT4 (WSRF) Random Case Impl.
• Gilda Submission (security no certificates
  installed)
• OGSA-DAI
• Pillar Search
• Region
• Pillar
• Plaque
• Text

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Prog. Exercise Status 2/2

• java -classpath CLASSPATH Regular -8922.635
  -9908.625 -8922.515 -9908.55 2000 probe26.eps
  http//server5.gs.unina.it8080/PillarsOfWisdom/su
  rface

java -classpath CLASSPATH Regular -8922.635
-9908.625 -8922.515 -9908.55 2000 probe27.eps
http//server6.gs.unina.it8080/PillarsOfWisdom/su
rface
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Contribution of Group Members

• All participants in our group contributed equally
  to the various tasks
• Java/Detection/Grid-Scheduling
• Web and Grid Services
• OGSA-DAI
• Presentation

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Feedback to GS

• Not enough 'free' time e.g. for progessive
  exercise ,to absorb material, and for life
  outside School.
• Make Java ex. available before School start.
• Short notice changes, some poor coordination and
  'goal' shifting.
• Last minute implementation (eg Web Service
  exercise, GT4).

• No hard copies of material. Presentations not
  on-line ahead of time.
• Some leading experts did not present as
  advertised (Foster, De Roure).
• Some poor presentations (SOAP, XML, GT4 (low
  content)).
• Reluctance to accept and accommodate feedback in
  first week.

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Feedback to GS

• Hands on intro to variety of Grid and WS
  middleware technologies.
• Presentations by leading Grid developers and
  users. Some excellent.
• Interesting progressive ex. culminating in
  transition to Grid Services.
• Working and collaborating with a diverse yet
  cohesive group.
• Considerable and impressive effort in tutorial
  material preparation.

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und lass ihn fliegen! and set it free!
The knowledge
GGFISSGC05
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