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#394 Erkenningsnummer P708816

august 26, 2015 \ newsweekly - € 0,75 \ read more at www.flanderstoday.eu current affairs \ p2

politics \ p4

Gunman stopped

BUSiNESS \ p6

Safe cycling

A man who pulled out an automatic weapon on a highspeed train between Brussels and Paris was tackled by passengers

Antwerp province has awarded grants to schools to give kids lessons in safe cycling and other road dangers

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innovation \ p7

education \ p9

art & living \ p10

Straight outta Asia

Nature organisations explain how the Taiwanese rat snake got into Flanders and how it is surviving the cold \ 10

Three billion unknowns

© Mischa Keijser/Corbis

Supercomputers allow Flemish researchers to achieve the unthinkable Senne Starckx More articles by Senne \ flanderstoday.eu

The supercomputer Tier-1 has been pushing scientists in Flanders to new frontiers, from predicting weather patterns in deep space to solving complex mathematical equations. But according to analysts, the powerful machine is underused by industry

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or much of human history, the scientific method has been the building block of science. Scientists would perform experiments in their labs to explore the laws of the universe and test their hypotheses. But there was only so much they could do with limited resources and time. In the 21st century, another way to investigate scientific phenomena has originated: the computer simulation run on powerful processing machines called supercomputers. Supercomputers have allowed scientists to take their research to the next level, enabling them to carry out projects that used to be unaffordable because of the huge computing power and data storage capacity they required. The machines have been around since the 1960s, but, for a

long time, Flanders neglected its computing infrastructure. The region had to wait until 2013 to see its first supercomputer installed: Tier-1, housed at Ghent University (UGent). At the time of its inauguration, Tier-1 ranked 118th in the global top-500 list of supercomputers. The computer, which, unlike your PC, is a combination of many processing cores, has a peak performance of 175 teraflops – that is 175 trillion calculations per second. One year after that installation, the region’s computing capacity was increased with the launch of Tier-2, a network of local computing clusters from Antwerp University, the Free University of Brussels (VUB), the University of Leuven (KU Leuven) and UGent. Now Flanders can boast a total computing capacity of 613 teraflops. All of that computing power is managed by the Flemish Supercomputer Centre (VSC), which allocates “computer time” to researchers working at the five universities. “Researchers can submit applications which are then evaluated by a panel of experts,” says Marc Luwel, director of the

Hercules Foundation, which co-ordinates VSC. If their own software is not sufficient, lecturers and postgraduate students from the associated universities can request access to the network. But researchers working for Flemish public institutions, businesses and non-profits are also encouraged to apply. Jan Fostier is with the IBCN research group at UGent. Together with his colleagues, he used Tier-1’s computing power to study the interaction of electromechanical waves, such as GSM, Wi-Fi and Bluetooth, with large objects like airplanes, antennas and telescopes. “We essentially solved Maxwell’s equations for these objects,” Fostier explains, referring to the set equations that show how energy and information can be transmitted through the air. “The bigger the object those waves interact with, the more unknown variables there are.” To calculate these unknowns, the team needed processing power. A lot of it. “We once did a simulation with more than three billion unknowns, which means you would need at continued on page 5


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