Information Technologies Department. Tour of CERN Computer Center and the Grid at CERN. Welcome!. Computing at CERN. General Purpose Computing Environment Administrative Computing Services Physics and engineering computing
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Tour of CERNComputer Center
and the Grid at CERN
1 Megabyte (1MB)
A digital photo
1 Gigabyte (1GB)
5GB = A DVD movie
1 Terabyte (1TB)
1 Petabyte (1PB)
Annual production of one LHC experiment
1 Exabyte (1EB)
= 1000 PB
3EB = World annual information production
LHC data correspond to about 1000 years ofDVD-quality videoproduced each year
Where will the experiments store all of these data?
LHC data analysis requires a computing power equivalent to~ 100,000
of today's fastest PC cores
Where will the experiments find such a computing power?
Nowhere near enough!
Users of CERN (2012)
Non Members States:
Grid development has been initiated by the academic, scientific and research community, but industry is also interested.
1. Sharing resources on a global scaleMain issues are trust, different management policies, virtual organisations, 24 hour access and support.2. SecurityMain issues are well-defined yet flexible rules, authentication, authorisation, compatibility and standards3. Balancing the loadThis is more than just cycle scavenging, (SETI@home), need middleware to monitor and broker resources4. The death of distanceNetworks delivered 56Kb/s 10 years ago,now we have 155Mb/s,for the LHC anticipate 10 Gb/s5. Open standardsGrid standards are converging, and include Web services, the GlobusToolkit, various protocols
5 big ideas
Access to a production quality GRID will change the way science and much else is done in Europe
This project officially ended on April 2010
An international network of scientists will be able to model a new flood of the Danube in real time, using meteorological and geological data from several centres across Europe.
A team of engineering students will be able to run the latest 3D rendering programs from their laptops using the Grid.
A geneticist at a conference, inspired by a talk she hears, will be able to launch a complex biomolecular simulation from her mobile phone.