The old DC webpage is still available.

ATLAS Data Challenges

ATLAS has committed itself to a set of Data Challenges to validate its software and its Computing Model.

It is understood that they should be of increasing complexity and will use as much as possible the Grid middleware being developed in the context of several Grid projects like LCG (CERN), NorduGrid (Northern European Countries) and Grid2003 (USA). The results of these Data Challenges will be used as input for a Computing Technical Design Report due by mid of 2005, and for preparing a Memorandum of Understanding in due time.

More information can be found in the documents below:

 ATLAS Data Challenges:  Document presented to the ATLAS Executive Board (15th October 2001) (.doc) or (.pdf) format

Draft document (Version 2; April 25, 2003): DC1 Project Report (mainly Phase 1; edited by Alois Putzer) (.doc) or (.pdf) format

Final Draft document (Version 3.0; September 22, 2003): DC1 Project Report (mainly Phase 1; edited by Alois Putzer) (.pdf) format

NIM Paper (Draft version, March 17, 2004): A Step Towards A Computing Grid For the LHC Experiments (DC1 Task Force; editor Alois Putzer) (.pdf) format

Produced Data

• Link to the AMI Search Interface

  Using AMI is the recommended way of searching for datasets, since it will be the only source containing constantly updated information also after DC1 (e.g. about the subsequent production of physics samples for the Athens Physics Workshop in May 2003).

  There are two interfaces, one for an "Easy Search" to get a fast overview of the available samples (providing a search guided by physics keywords, and displaying only the most relevant dataset information), and one for an "Advanced Search" to retrieve all the available information in AMI. Both interfaces allow subsequent refinement of the searches, access to information on partition level (location, number of files, ...), etc.

  The AMI and DC Teams will be happy to take into account users' feedback, in order to improve the user friendliness of the AMI Search Interfaces. If you have comments, suggestions, etc., please contact Solveig Albrand.

  • Solveig's instructions (mail to the DC list) on how to use the Search Interfaces
  
  
  • Use cases:
    • Use case 1: Search for SM Higgs samples (e.g., needed for b-tagging studies)
    • Use case 2: Search for dijet samples with pile-up
    • Use case 3: Search for pile-up production done at a particular site
  
  

• Links to Other Webpages

  The webpages below won't be updated after DC1, and might soon become obsolete.

  • DC1/Phase1 Pages:   (simulation phase; requests by HLT Group)
    • Monika Wielers' collected requests
    • DC1/Phase1 Production Requests Page
  
  
  • DC1/Phase2 Pages:   (re-simulation and pile-up phase; requests by HLT Group)
    • Slides of a presentation by Monika Wielers   ( .ppt,   .pdf)
  
  

• Access to DC1 Data Stored at Outside Institutes:

  Primary data will be stored at nine different sites: Alberta, BNL, CERN, CNAF (Bologna), Karlsruhe, Lyon, Oslo, RAL, Tokyo. Besides, replicae of some datasets, and small sub-samples (ca. 10%; for testing purposes) of each dataset will be available at CERN.

  • Document: Strategy and Rules for the Access to the Large Datasets   (pdf file)
  
  
  • How to Get Accounts at Outside Institutes
  
  

Links to Validation Pages

• DC Physics and Site Validation
  • Link to Jean-Francois Laporte's DC Physics Validation page
  
  

• Physics Software Validation
  • Link to the new ATLAS Software Validation page
  
  

Bookkeeping and Databases

• AMI - ATLAS Metadata Interface
  • AMI Webpage
  
  

• MAGDA - Manager for Grid-based Data
  • MAGDA Webpage
  • Condensed MAGDA Information
  • Wengsheng Deng's instructions on how to register files with MAGDA
  
  

• VDC - Virtual Data Catalog
  • VDC Web Interface
    (use standard ATLAS login and password)
  
  

Production Tools

• AtCom - the Atlas Commander
  • AtCom Website
  
  

• Windmill/Don Quijote - the Atlas automatic production system project
  • Workgroup meetings (agenda)
  
  

Documents and Presentations

To be updated ...

ATLAS Grid & Data Challenges in December 2001 ATLAS Software workshop

Useful Links

Links to LHC Computing Grid Project Information

• SC2   (The Software & Computing Committee)

• PEB   (The Project Executive Board)

Last update:    June 05, 2003    Nektarios Ch. Benekos  -  Armin Nairz