Data query services: ADQL applicable ? ⢠UCDs relevant. ⢠Registry: How to describe theory datasets ? ⢠Datamodel for similar datasets may be unified in IVOA ...
Why this workshop? • growing interest by French numerical community • Historically, first VO projects were mostly driven by data centers and/or observational surveys.
• Theoretical VO developments are most often a subproject inside wider numerical projects ⇒ need to identify eligible numerical projects • VO-France in charge of promoting VO projects • ASSNA (Action Spécifique pour la Simulation Numérique en Astrophysique) responsible for promoting numerical simulations • Interface problem!
2006/05/15
H. Wozniak / Victoria INTEROP, 14-19 may 2006
2
VO-France working groups • • • •
Spectral data (Ph. Prugniel, CRAL, Lyons) Workflows (A. Schaaf, CDS, Strasbourg) Images (E. Slezak, OCA, Nice) Theory (H. Wozniak, CRAL, Lyons) • Needs: • • •
Explain what is [not] Virtual Observatory Understand/summarize numerical simulations/codes specificities Explain/show how a VO-compliant theoretical service could run and help to make science
• Meetings: • Presentation of VO-France at ASSNA meeting (December 2003) • First WG meeting just after the founding VO-France workshop (4-6 April 2005) • Parallel session during Obernai winter school (5-7 November 2005) • Paris Workshop: first joined ASSNA+VO-France workshop dedicated to TVO
2006/05/15
H. Wozniak / Victoria INTEROP, 14-19 may 2006
3
Presentations/Projects •
General presentations • • •
•
The Meudon PDR code in the VO BASECOL / ASAP Model of the Galaxy and VO (Besancon’s model) Galics Theory in GAVO: Cosmological simulations in a database HORIZON
F. Le Petit M.-L. Dubernet A. Robin/B. Debray B. Guiderdoni G. Lemson H. Wozniak
Future possible services/data in the VO • • • • 9 •
2006/05/15
G. Lemson S. Derrière A . Schaaf
Progress in ‘virtualization of theoretical data/codes’ 9 9 9 9 9 9
•
Theory in the VO: the IVOA approach Metadata, UCD, semantics in the VO Workflow
Modeling exoplanets Lorene (numerical lib. for computation in general relativity) Stellar models Solar MHD Titan & Arty MHD-shock models of protostellar dense cores
H. Wozniak / Victoria INTEROP, 14-19 may 2006
F. Roy Ph. Grandclément A. Palacios R. Grappin L. Chevallier/A. Gonçalves P. Hennebelle
4
Some issues/points discussed •
Registries: • • •
•
Two ways (complementary) to publish in the VO: •
• •
•
• • • •
Not only for short CPU needs (asynchronous services) Range of parameters could be constrained/checked by the interface interface Defaults values for some parameters Should (the experts/developers) mask some less important parameters parameters ?
• •
database/catalogues (but storage/huge SQL requests issues) Solve CPU time issues (e.g. cosmo) cosmo)
Grid of models (sampling parameter space) ⇒ Combination of both
redundant or complementary? Issue on parameters with various definition (e.g. χ)
Binary data: • • •
2006/05/15
Services: alternative to source distribution (e.g. TITAN)
UCD/utype: • •
•
easy-to-use ? Even non-VO services could registered (right?) Detailed description of all parameters But still no theoretical service registered
base64 encoding encapsulated in XML/VOTable? FITS files… Input reading routines associated to data H. Wozniak / Victoria INTEROP, 14-19 may 2006
5
First conclusions (by Gerard) •
Simulator services: register as generic service with interface definition (we‘ll ask Registry WG how) •
•
Data query services: ADQL applicable ? • • • • •
2006/05/15
Once registered (as non-beta) web app can not be changed, only new versions possibly plus deprecation UCDs relevant Registry: How to describe theory datasets ? Datamodel for similar datasets may be unified in IVOA standard model Is data applicable for a SxxP standardization ? Is there an existing one applicable (eg SSAP for theory spectra) Standardized simpledb like webapplication for quick startup of a web based RDB interface
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