Introduction

• Aim of the working group
  -
  - Link with EuroVO DCA WP5
  - ...
  

Presentations

• EuroVO DCA WP5, Giuliano Taffoni
  - cf. slides
  

• EGEE, Johan Montagnat
  - it is possible to execute parametric tasks
  - it is now possible to submit small tasks (> 5 minutes) with a high priority (but the number of small tasks is limited)
  - better robustness
  - Pierre : Are the material ressources dedicated to EGEE ?
  -> EGEE own no ressources but associated laboratories offer dedicated ressources for EGEE
  Which means to participate as computing center ?
  -> example : at IN2P3, 10 persons
  Which investment at the user level ?
  -> easy, tutorials are organised frequently
  - André : could you recall us how to access to EGEE ?
  - cf. slides
  

• Grid5k, Olivier Richard
  - Horizon (ANR LEGO), Eddy Caron, cosmological simulation, March/April 2007 : challenge, possible feedback in a next meeting
  Pierre : and the localisation of the data
  - March : school about grids
  - cf. slides
  

• Some comments, Pierre Valiron
  Olivier : Grid5k will be more open to other communities in the future
  Pierre : research of clusters accepting VO requests
  - cf. slides
  

• Galaxy simulations, Annie Robin
  Pierre : you have internal and external needs, perhaps duplication the services
  Giuliano : which size ?
  small to big (needs a lot of ressources in this case)
  Pierre : some simulations could be archived to gain time but it is not possible for all
  Andre : which is the entry ticket to become a Grid5k node ?
  Olivier : at least 128 processors because human ressources are also needed and there are too high (many problems to resolve) for a small number of processors
  - cf. slides
  

• "Portail numérique, VO Paris datacenter", Fabrice Roy
  Pierre : How to regulate the needs ? How to manage the scalability ?
  Jean-Yves : we double every year the computing power
  - common problem : how to limit the use of some people
  - cf. slides
  

• Use case and Horizon project, Hervé Wozniak
  - cf. slides
  

• VO Paris Data Center, Pierre Le Sidaner
  - cf. slides
  

• Interest of computing grid in the frame of VO projects, Jérôme Berthier and Frédéric Vachier
  Jean Yves : SRB, distribution on different sites
  

- cf. slides

• Grid Technology and Cosmological Simulations, Dominique Aubert
  - cf. slides
  

• Grid use at CDS, André Schaaff
  - cf. slides
  

Final discussion