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SC2004 Pittsburgh, PA November 2004. Guy Rixon AstroGrid Technical Architect University of Cambridge. AstroGrid: new technology for the virtual observatory. But first. ...What is a Virtual Observatory? - PowerPoint PPT Presentation
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A PPARC funded project
AstroGrid: new technology for the virtual observatory
SC2004
Pittsburgh, PA
November 2004
Guy RixonAstroGrid Technical
ArchitectUniversity of Cambridge
2004-11-12 AstroGrid: new technology for the VO; SC2004, Pittsburgh PA Slide 2
But first...
...What is a Virtual Observatory?
Dynamic collection of hardware, data and software working in harmony to solve arbitrarily large and complex astromonical problems.
2004-11-12 AstroGrid: new technology for the VO; SC2004, Pittsburgh PA Slide 3
Virtual Observatories: Unlocking new Virtual Observatories: Unlocking new sciencescience Federating multi-λ data: Deep Federating multi-λ data: Deep
Field SurveysField Surveys
Nik Szymanek
D. Ducros, ESA
Link the X-ray and Opt/IR to understand energetic galaxies at the edge of the Universe
NEP J1716.6+6708: an X-ray cluster at z=0.81: Chandra X-ray image (C. Mullis) overlaid on a deep BRI image (D. Clowe & G. Luppino).
2004-11-12 AstroGrid: new technology for the VO; SC2004, Pittsburgh PA Slide 4
Bridging communities
Virtual observatory(VO)
Virtual observatory(VO)
Desktop astronomy
Web archivesin astronomy
Semantic web/grid
HPC
2004-11-12 AstroGrid: new technology for the VO; SC2004, Pittsburgh PA Slide 5
AstroGrid’s position within VO
VO
Interactive exploration/Experiment design
Interactive exploration/Experiment design
Bulk processing/Experiment execution
Bulk processing/Experiment execution
AstroGrid’s emphasis
2004-11-12 AstroGrid: new technology for the VO; SC2004, Pittsburgh PA Slide 6
Bulk processing workflow
Hands-off operation
Reproducible experiments
Common, reusable procedures
Everything is recorded
Integrated with interactive system
“Virtual grad student”
2004-11-12 AstroGrid: new technology for the VO; SC2004, Pittsburgh PA Slide 7
Components within AstroGrid
Data gridData gridCompute gridCompute grid
WorkflowSystem
WorkflowSystem
Web portalWeb portal
ResourceRegistryResourceRegistry
2004-11-12 AstroGrid: new technology for the VO; SC2004, Pittsburgh PA Slide 8
Web portal
Basic controls in web browser…
…linked to traditional displays on desktop.
2004-11-12 AstroGrid: new technology for the VO; SC2004, Pittsburgh PA Slide 9
Resource registry
Description of all accessible resources:ServicesApplicationsArchive data-sets
Follows IVOA standardsStandard interface for queriesStandard XML schemata for resource entriesStandard “harvesting” between registries
Metadata for:HumansSoftware agents
2004-11-12 AstroGrid: new technology for the VO; SC2004, Pittsburgh PA Slide 10
Workflow: Job Execution System
2004-11-12 AstroGrid: new technology for the VO; SC2004, Pittsburgh PA Slide 11
Data grid: DSA and MySpace
Archive
Data-selectionService
User-writeable storage
Processing 1 Processing 2
Desktop
2004-11-12 AstroGrid: new technology for the VO; SC2004, Pittsburgh PA Slide 12
Compute grid: Common Execution Architecture
CommonExecutionConnector
CommonExecutionConnector
Application as.exe file (local)Application as.exe file (local)
Application as.exe file (grid)Application as.exe file (grid)
CommonExecutionConnector
CommonExecutionConnector
Application asHTTP serviceApplication asHTTP service
CommonExecutionConnector
CommonExecutionConnector
Application asJava class
Application asJava class
CommonExecutionConnector
CommonExecutionConnector
Web services Legacy/situated s/w
JESJES
RegistryRegistry
2004-11-12 AstroGrid: new technology for the VO; SC2004, Pittsburgh PA Slide 13
What you get
AstroGrid makes Java software for others to run.
All our software is server-sideWe recommend other s/w suppliers for desktop components, e.g. Starlink, SAO
Our services are web servicesBuilt with Apache Axis
Run in Jakarta-Tomcat
Delivered as web-archive (WAR) files.
No user coding needed!AstroGrid software adapts to your legacy archive/application
Highly configurable
2004-11-12 AstroGrid: new technology for the VO; SC2004, Pittsburgh PA Slide 14
Follow-upOur web site: http://www.astrogrid.org/Beta testing
Contact Nic Walton ([email protected])
Component DeploymentData CentreMySpaceLocal RegistryCommunity
Contact Nic Walton
Software cooperationMySpaceWorkflowData CentreRegistry metadata updating
Contact Tony Linde ([email protected]), Keith Noddle ([email protected])
