Difference: TiersAtRAL (1 vs. 2)

Revision 22009-10-09 - AlastairDewhurst

  META TOPICPARENT 
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 Introduction
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+This page briefly explains what the ATLAS computing model is, what facilities are avaliable at RAL and how ATLAS users can access them.
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+ 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
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+Tier 0 This is CERN where the raw data will be produced. This is archived at CERN before being distributed to the Tier 1s.
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+Tier 0 This is CERN where the raw data will be produced.  This is archived at CERN before being distributed to the Tier 1s.
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+Tier 1 There are 10 Tier 1s serving ATLAS.  RAL is the UK Tier 1 and is expected to recieve 10% of the raw data from CERN.  Tier 1
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+Tier 1 There are around 10 Tier 1s serving ATLAS.
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+Tier 2
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+Tier 2
 Tier 3

This page explains the computing model and the hardware that is avaliable at RAL.

 Tier 1
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+The Tier 1 for the UK cloud is based at RAL.  The Tier 1 is in the machine room in building R89.
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+ The Tier 1 for the UK cloud is based at RAL. The Tier 1 is in the machine room in building R89.
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+ 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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+In order to run at the Tier 1 you grid certificate must be either:
/atlas/uk/Role=production
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+/atlas/uk/Role=poweruser0

 Tier 2 
 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.

 Tier 3 
The Tier 3 is actually part of the Tier 2 that has been reserved for use by RAL staff.
 -- AlastairDewhurst - 2009-10-09

Revision 12009-10-09 - AlastairDewhurst

META TOPICPARENT	name="WebHome"

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.

-- AlastairDewhurst - 2009-10-09

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