Worldwide LHC computing Grid - wikipedia Worldwide LHC computing Grid This article may require cleanup to meet Wikipedia 's quality standards. The specific problem is : Talk : Worldwide LHC Computing Grid # Inconsistences Please help improve this article if you can. ( March 2014 ) The Worldwide LHC Computing Grid ( WLCG ), formerly ( until 2006 ) the LHC Computing Grid ( LCG ), is an international collaborative project that consists of a grid - based computer network infrastructure incorporating over 170 computing centers in 42 countries, as of 2017. It was designed by CERN to handle the prodigious volume of data produced by Large Hadron Collider ( LHC ) experiments. By 2012, data from over 300 trillion ( 3 × 10 ) LHC proton - proton collisions had been analyzed, and LHC collision data was being produced at approximately 25 petabytes per year. As of 2017, The LHC Computing Grid is the world 's largest computing grid comprising over 170 computing facilities in a worldwide network across 42 countries. Contents 1 Background 2 Description 3 See also 4 References 5 External links Background The Large Hadron Collider at CERN was designed to prove or disprove the existence of the Higgs boson, an important but elusive piece of knowledge that had been sought by particle physicists for over 40 years. A very powerful particle accelerator was needed, because Higgs bosons might not be seen in lower energy experiments, and because vast numbers of collisions would need to be studied. Such a collider would also produce unprecedented quantities of collision data requiring analysis. Therefore, advanced computing facilities were needed to process the data. Description A design report was published in 2005. It was announced to be ready for data on 3 October 2008. A popular 2008 press article predicted `` the internet could soon be made obsolete '' by its technology. CERN had to publish its own articles trying to clear up the confusion. It incorporates both private fiber optic cable links and existing high - speed portions of the public Internet. At the end of 2010, the Grid consisted of some 200,000 processing cores and 150 petabytes of disk space, distributed across 34 countries. The data stream from the detectors provides approximately 300 GByte / s of data, which after filtering for `` interesting events '', results in a data stream of about 300 MByte / s. The CERN computer center, considered `` Tier 0 '' of the LHC Computing Grid, has a dedicated 10 Gbit / s connection to the counting room. The project was expected to generate 27 TB of raw data per day, plus 10 TB of `` event summary data '', which represents the output of calculations done by the CPU farm at the CERN data center. This data is sent out from CERN to eleven Tier 1 academic institutions in Europe, Asia, and North America, via dedicated links with 10 Gbit / s or higher of bandwidth. This is called the LHC Optical Private Network. More than 150 Tier 2 institutions are connected to the Tier 1 institutions by general - purpose national research and education networks. The data produced by the LHC on all of its distributed computing grid is expected to add up to 10 -- 15 PB of data each year. In total, the four main detectors at the LHC produced 13 petabytes of data in 2010. The Tier 1 institutions receive specific subsets of the raw data, for which they serve as a backup repository for CERN. They also perform reprocessing when recalibration is necessary. The primary configuration for the computers used in the grid is based on CentOS. In 2015, CERN switched away from Scientific Linux to CentOS. Distributed computing resources for analysis by end - user physicists are provided by the Open Science Grid, Enabling Grids for E-sciencE, and LHC@home projects. See also Book : Large Hadron Collider Openlab ( CERN ) References Jump up ^ Hayes, Jacqui ( 21 December 2011 ). `` Happy 10th Birthday, WLCG ! ''. International Grid Science This Week. Retrieved 2012 - 12 - 20. Jump up ^ Worldwide LHC Computing Grid, CERN, January 2017, retrieved 2017 - 08 - 04 Jump up ^ About, CERN, January 2017, retrieved 2017 - 08 - 04 ^ Jump up to : Hunt for Higgs boson hits key decision point Jump up ^ Worldwide LHC Computing Grid about page 2017 : `` Even after filtering out 99 % of it, in 2017 we 're expecting to gather around 50 petabytes of data. That 's 50 million gigabytes, the equivalent to nearly 15 million high - definition ( HD ) movies. '' Jump up ^ Worldwide LHC Computing Grid main page 2017 : `` 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. '' Jump up ^ LHC Computing Grid : Technical Design Report ( PDF ). document LCG - TDR - 001, CERN - LHCC - 2005 - 024. The LCG TDR Editorial Board. 20 June 2005. ISBN 92 - 9083 - 253 - 3. Retrieved 2 October 2011. Jump up ^ `` LHC GridFest ''. CERN. 2008. Jump up ^ Jonathan Leake ( 6 April 2008 ). `` Coming soon : superfast internet ''. The Times. London. Archived from the original on August 5, 2011. Retrieved 25 January 2013. Jump up ^ `` The Grid : separating fact from fiction ''. CERN. May 2008. Retrieved 25 January 2013. Adapted from an article originally published in Symmetry Breaking. ^ Jump up to : Geoff Brumfiel ( 19 January 2011 ). `` High - energy physics : Down the petabyte highway ''. Nature. 469 : 282 -- 283. Bibcode : 2011Natur. 469... 282B. PMID 21248814. doi : 10.1038 / 469282a. Retrieved 2 October 2011. Jump up ^ `` Network transfer architecture ''. CERN. Retrieved 2 October 2011. ^ Jump up to : final - draft - 4 - key Archived May 26, 2008, at the Wayback Machine. Jump up ^ Brodkin, Jon ( 28 April 2008 ). `` Parallel Internet : Inside the Worldwide LHC computing grid ''. Techworld.com. ^ Jump up to : CERN. `` Linux @ CERN : / linux / nextversion. shtml ''. linux.web.cern.ch. Retrieved 2016 - 02 - 07. External links Official website `` e-Science Talk ''. Supporting grid and high performance computing reporting across Europe `` Grid Café ''. Educational web site. Archived from the original on May 2015. Operational 2010 -- 2015 European Organization for Nuclear Research ( CERN ) Large Hadron Collider ( LHC ) List of LHC experiments ALICE ATLAS CMS LHCb LHCf MoEDAL TOTEM Large Electron -- Positron Collider ( LEP ) List of LEP experiments ALEPH DELPHI OPAL L3 LEP5 LEP6 Super Proton Synchrotron ( SPS ) List of SPS experiments CNGS NA48 NA49 NA58 / COMPASS NA60 NA61 / SHINE NA62 UA1 UA2 Proton Synchrotron ( PS ) PSB LEIR BEBC PS212 / DIRAC PS215 / CLOUD Gargamelle Linear Accelerators AWAKE CTF3 LINAC 1 LINAC 2 LINAC 3 LINAC 4 Other Accelerators AD ISR ISOLDE ISOLTRAP MISTRAL WITCH LEAR PS210 n - TOF Non-Accelerator Experiments CAST OSQAR Future projects High Luminosity Large Hadron Collider Very Large Hadron Collider International Linear Collider Compact Linear Collider Future Circular Collider SHiP Related LHC@home Safety of high - energy particle collision experiments CERN Courier CERN openlab Worldwide LHC Computing Grid Microcosm exhibition Streets in CERN The Globe of Science and Innovation Particle Fever ( 2013 documentary ) Retrieved from `` https://en.wikipedia.org/w/index.php?title=Worldwide_LHC_Computing_Grid&oldid=801287459 '' Categories : Cyberinfrastructure Large Hadron Collider Hidden categories : Webarchive template wayback links Articles needing cleanup from March 2014 All pages needing cleanup Cleanup tagged articles with a reason field from March 2014 Wikipedia pages needing cleanup from March 2014 Articles containing potentially dated statements from 2017 All articles containing potentially dated statements Official website not in Wikidata Talk Contents About Wikipedia Deutsch Ελληνικά Italiano Português Русский Edit links This page was last edited on 18 September 2017, at 20 : 11. Text is available under the Creative Commons Attribution - ShareAlike License ; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia ® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. About Wikipedia

Question: how much data does the large hadron collider produce
Answer: approximately 25 petabytes per year