Grid Computing and LHC… :)

Today’s a memorable day in the history of science. Be the massive experiment at CERN turns out satisfactory or not, it’ll be a milestone in human scientific and engineering history. All the Works, efforts and the vastness of this project is really mind boggling. The Main LHC team, Building blocks, The Superconductor specialists team, the Indian electronic sensor team, the Cryogenics team handling 170 tonnes of liquified Helium; and lastly but not the least… but more importantly, The Computing Team there at CERN tracking every single piece of data ( alltogether, it’s handling some 15 PetaBytes of data! ) for doing the actual findings.

Cleverly, the system introduced Grid Computing. What is grid computing can be found here. The pictures canbe found here.

The mission of the Worldwide LHC Computing Grid (LCG) project is to build and maintain a data storage and analysis infrastructure for the entire high energy physics community that will use the LHC.

The data from the LHC experiments will be distributed around the globe, according to a four-tiered model. A primary backup will be recorded on tape at CERN, the “Tier-0” centre of LCG. After initial processing, this data will be distributed to a series of Tier-1 centres, large computer centres with sufficient storage capacity and with round-the-clock support for the Grid.

The Tier-1 centres will make data available to Tier-2 centres, each consisting of one or several collaborating computing facilities, which can store sufficient data and provide adequate computing power for specific analysis tasks.

Individual scientists will access these facilities through Tier-3 computing resources, which can consist of local clusters in a University Department or even individual PCs, and which may be allocated to LCG on a regular basis.

For this, a specially designed SunCluster has been appointed (!) and it’s currantly working full fleged at CERN. By the way… 😀 CERN scientists are using VmWare Fusion to share Linux-based computer code on Fusion “virtual machines” running on Macs. The software links the computers to the LHC Computing Grid — a network of about 40,000 CPUs. So.. Linux Linux everywhere… 😀

A note to make : CERN actually invented the World Wide Web alongside with Tim Berners Lee for this type of large data sharing over wide spread areas. 😀 What an Idea, Sirji… 😀


2 thoughts on “Grid Computing and LHC… :)

  1. actually, almost everything runs on Scientific Linux CERN 4
    “Scientific Linux CERN 4 is a Linux distribution build within the framework of Scientific Linux which in turn is rebuilt from the freely available Red Hat Enterprise Linux 4 product sources under terms and conditions of the Red Hat EULA. Scientific Linux CERN is built to integrate into the CERN computing environment but it is not a site-specific product: all CERN site customizations are optional and can be deactivated for external users”.

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