Introduction
This page briefly explains what the ATLAS computing model is, what facilities are avaliable at RAL and how ATLAS users can access them.
The ATLAS computing Model
Tier 0 This is CERN where the raw data will be produced. This is archived at CERN before being distributed to the Tier 1s.
Tier 1 There are around 10 Tier 1s serving ATLAS.
Tier 2
Tier 3
This page explains the computing model and the hardware that is avaliable at RAL.
Tier 1
The Tier 1 for the UK cloud is based at RAL. The Tier 1 is in the machine room in building R89.
Tier 2/3
As well as the Tier 1 there is a Tier 2 cluster also based at RAL however it is in a different building from the Tier 1 and run by different people.
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AlastairDewhurst - 2009-10-09