Data on the GRID

The vast amount of data that result from the proton-proton collisions are used to study a large number of processes, and the ATLAS Collaboration has already published 300 papers. 

While the collaboration is large, it succeeds by splitting the work into smaller projects in which smaller groups can make substantial contributions. The simulation effort, in particular, is spread among various computing centres located in universities and labs representing all continents : this is what we call "Distributed Production", a genuine world wide effort for which we are permanently looking for resources. About 150.000 tasks are constantly running on the WLCG computing GRID, half of them related to simulation, and the sun never sets on the ATLAS computing effort : scientists from the European, American and East Asian time zones take turns to check the production status and transfer files to the sites where they are needed. The volunteers of the atlas at home project appear to them as a new production center.


As seen by ATLAS scientists :


More general links :

  • A nice cartoon on the history of CERN and Big Data [by TED-Ed]
  • Today's LHC data processing summarised [by WLCG, the World wide LHC computing grid].
  • Maps of the world wide computing centres used by the LHC collaborations.


Figure caption: 
countries where ATLAS collaboration institutes are to be found

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