August 2017. This shows information covering data movement for both Monte Carlo production and Tier0 export, and additional information about running jobs on the ATLAS, CMS, LHCb and Alice (jobs only) grids. (Video: CERN)

Worldwide LHC Computing Grid

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A key tool for physics

The most sophisticated data-taking & analysis system ever built for science, providing near real-time access to LHC data.

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Seamless access


Computing resources which include data storage capacity, processing power, sensors, visualization tools and more. 

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Global collaboration

42 countries
170 computing centres
Over 1 million computer cores
2 exabytes of storage

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Enabling discovery

WLCG computing enabled physicists to announce the discovery of the Higgs Boson on 4 July 2012.


The Worldwide LHC Computing Grid (WLCG) is a global computing infrastructure whose mission is to provide computing resources to store, distribute and analyse the data generated by the Large Hadron Collider (LHC), making the data equally available to all partners, regardless of their physical location.

WLCG is the world's largest computing grid. It is supported by many associated national and international grids across the world, such as European Grid Initiative (Europe-based) and Open Science Grid (US-based), as well as many other regional grids.

WLCG is co-ordinated by CERN. It is managed and operated by a worldwide collaboration between the experiments (ALICE, ATLAS, CMS and LHCb) and the participating computer centres. It is reviewed by a board of delegates from partner country funding agencies, and scientifically reviewed by the LHC Experiments Committee.