Atlas:3T1

Introduction

This section contains information on the common activities of the Atlas peer tier-1 associated to the LCG-France tier-1, namely the US Atlas computing facility and GridKa.

Meetings

• The first face-to-face meeting of representatives of the 3 Atlas tier-1 sites was hosted by CC-IN2P3 on May 22nd-23rd 2007. The agenda of the meeting can be found at [1]. At the end of this meeting a set of possible common activities were identified (see below).

Common activities

• Modify the network routing

  Goal: use the LHCOPN for data exchanges between the 3 sites

  Status: Done on early June 2007.

• Exercise disk-to-disk data exchanges between the 3 sites:

  Goal: exercise the disk-based data exchange infrastructure between the 3 sites and make sure the required data rates are reached.

  Contact persons: Ghita Rahal (CC-IN2P3), Hironori Ito (US Atlas), Cédric Serfon and John Kennedy (GridKa).

  Coordinator: Hironori Ito (US Atlas)

  Estimated timeframe: end of june, so that the results of this exercise can be used as an input for the Full Dress Rehearsal

  Status:

• Reconstruction exercise (after the previous disk-to-disk exercise is performed)

  Goal: Tape-to-disk data staging and distribution to other sites

  Contact persons: Ghita Rahal (CC-IN2P3), TBD (US Atlas), TBD (GridKa).

  Coordinator: to be identified (Eric Lançon is in charge of this).

  Estimated timeframe: September-October 2007

  Status:

• Common activities related to the Analysis Farm

  Goal: identify the required services and infrastructure needs for setting up an Atlas analysis farm

  Contact persons: Ghita Rahal (CC-IN2P3)

  Estimated timeframe: Atlas-France has no plans for doing this before summer

  Status:

Communication channel

A mail distribution list was setup with representatives of the sites and the Atlas experiments. If you are interested in subscribing to lcg-atlas-3t1-l@in2p3.fr please send an e-mail to. Note that you need to be a subscriber to be allowed to post messages to this list.