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PrimeurWeekly 20 September 2010
>Special
>Large number of Grid adepts to attend BiG Grid User Day
>International Desktop Grid Federation will assist to get millions of volunteers at home donating computing time to science
>AMC moving from Black Windows to applications
>Transcriptomics application very responsive on the HPC Cloud
>Making the Grid more accessible to non-computer-minded people
>The importance of getting the e-Infrastructure in place
>How do we teach biologists to handle the Grid?
>Digital Agenda: EU Grid project unlocks processing power of 200,000 desktop computers for European researchers
>Ornithologen to fall from their chairs when they see FlySafe
>EGI-InSPIRE project brings together European e-Infrastructure community
>Userfriendly e-NMR web portals thanks to BiG Grid
>WLCG working hard to make the Higgs particle theory come true
>LOFAR hightly flexible instrument to detect cosmic rays
>Delft Life Science Grid cluster makes researchers familiar with Grid computing
>Leiden Grid Initiative can handle jobs that traditional Grid middleware is struggling with
>Grid at Erasmus works to compute and visualize an ageing brain from 55 to 85 years old
>EuroFlash
>AMS-IX doubles network capacity and paves way to 100 GbE with Brocade
>T-Platforms to unveil TB2-TL, new Tesla GPU-based HPC blade system, at NVIDIA GPU Technology Conference
>GridKa boosts data centre performance with Brocade SAN switches and HBAs
>How supermassive black holes were formed
>Industry leaders to present latest simulation trends at Altair's 4th European HyperWorks Technology Conference
>Evidian unveils Identity & Access Manager 9, a major release for business oriented administration of access rights
>Getronics and Cordys to innovate hosting market with Cloud platform
>USFlash
>New supercomputer 'sees' well enough to drive a car someday
>Orbit@home enters production mode
>Campus-wide roll-out of Avizo software at Penn State University
>LSU professors receive $1 million in federal funding to advance digital media and computational science research
>Trusted Computing Group extends trust-based security to Cloud computing and announces updates to IF-MAP for security information-sharing
>Cisco evolves data centre architectural strategy to deliver distinct business advantage
>Novell delivers first solution for comprehensive Cloud management
>IDT voltage regulator modules power the world's fastest supercomputer
>SGI announces support for NVIDIA Tesla with high performance GPU computing solutions
>Brocade delivers on Brocade One promise with world's most powerful 100 Gigabit Ethernet router
>Nemertes Research names IBM top provider for Cloud computing
>UT's Remote Data Analysis and Visualization Center enters full production
WLCG working hard to make the Higgs particle theory come true
Amsterdam 13 September 2010 Frank Linde elaborated on the Worldwide LHC Computing Grid (WLCG) at the BiG Grid User Day. The WLCG is a global collaboration of more than 170 computing centres in 34 countries, the 4 LHC experiments, and several national and international Grid projects. The mission of the WLCG project is to build and maintain a data storage and analysis infrastructure for the entire high energy physics community that will use the Large Hadron Collider at CERN. CERN is the world's largest physics laboratory where the World Wide Web was born.
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The Worldwide LHC Computing Grid involves data from Large Hadron Collider (LHC) collisions at CERN to physics results. One such event includes 1.6 MB, that is a hell of a lot of data, explained Frank Linde. Therefore, the data has to be filtered and selected. We are talking of a speed of 500 MB/s here.

It is in the ATLAS experiment that the Grid comes in. The Tier 0 is located at CERN and 3500 CPUs are constantly cranking on this data. Furthermore, there are 11 Tier 1 sites involving 60 PB and 150.000 CPUs. The Netherlands has one of these Tier 1 sites which is supported by BiG Grid and housed at SARA and NIKHEF, Frank Linde told the audience. In addition, there are also 140 Tier 2 sites. The Netherlands has the second largest density thanks to SURFnet and BiG Grid.

The WLCG started in the nineties, with 10.000 CPUs in 2007 and 100.000 CPUs in 2009. In 2008 the Common Computing Readiness Challenge took place and in 2009 there was the Scale Testing Experiment Programme, called STEP'09.

The WLCG has to solve questions like 'What is the Universe made of?' and 'How does the Universe work?' The researchers are investigating the smallest building blocks of matter, following the track of the Big Bang towards the state of the Universe 14 billion years later. By letting particles collide the researchers try to understand the evolution in the Universe. Barely 4 percent of the building blocks in the Universe is known. The researchers study the dark matter and ask themselves where all the antimatter is. The Universe ought to be symmetric. Frank Linde noted that Einstein's e=mc2 is how it all works.

The particle accelerator in Geneva records the measurement of events. Scientists are in search of the Higgs particle. They watch the colliding proton beams at 2835 bunches per beam to try and find the new signatures out of an enormous amount of events.

For the Higgs particle research, Grid computing is needed and it already works. The number of users is increasing who are analyzing data on the Grid. The work amounts to 100.000 CPUs today. BiG Grid provides the Dutch Tier 1 to the LCG.

In 2010 the first "European" top-quarks have been observed. European scientists rediscovered a particle that was at that time only observed before in the United States. By 2015 they hope to discover the Higgs particle. This can be predicted because of the underlying theory. The observation of a mini-black hole will follow in the future hopefully. In 2025 a new accelerator will be built.

The principle is to start from an underlying theory, explained Frank Linde, and base observations on that theory. You cannot investigate things out of the blue because there is too much money involved. First scientists have to think about what they want to discover in reality. All things discovered which are not based on the theory should be considered as a bonus on top of that.

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Leslie Versweyveld

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