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Archive for the ‘University of Zurich’ Category

Swiss TV SF DRS Reporting About ERIS Simulation of the Birth of Milky Way

Monday, January 9th, 2012

The Swiss German television SF DRS reported in the transmission Einstein about the research results of Prof. Lucio Mayer of the University of Zurich about the first realistic simulation of the birth of a galaxy similar to our Milky Way.

Have a look at the movie (in German)

Einstein vom 22.12.2011

Interview with George Lake, University of Zurich about HPC, Astrophysics and Switzerland

Thursday, December 8th, 2011

George Lake is professor for astrophysics at the University of Zurich (UZH). At his visit to the hpc-ch booth at SC11 we interviewed him about his research activities. George told us that at UZH there are different research groups working on dark matter, large scale structure of the universe and galaxy and clusters of galaxies. Most of the matter in the universe is dark matter, a mysterious component we still do not understand but it drives the process of galaxies formation and evolution. The researchers at UZH recently discovered that dark matter is clustered in little lumps that are present even in the disk of our galaxy. Currently they are studying both novel observational approaches to detect these lumps and their theoretical consequences on the process of galaxy and galaxy cluster formation.

For many years George has been involved in supercomputing . He was first one of the leading scientists for a large NASA program, HPCC/ESS (High Performance Computing and Communications for Earth and Space Sciences), then he was chief scientist at the ARSC supercomputing center.  The NASA was the one where Tom Sterling initiated the Beowulf cluster project. Originally the Beowulf was a gigaflop workstation. The idea was to create a personal supercomputer setup on your desk. George was the first to say “workstations heck, I’m building a server”.

George also boosted the research and supercomputing environment in Switzerland. The general envornment in Switzerland has very balanced investments. We have a national supercomputing centre in Manno (Ticino)  and the university has an own cluster. There are good investments in research groups to develop next generation software to use next generation systems (HP2C initiative). It is a confluence of things that the US is tried to achieve for many years and the Swiss have accomplished.

CSCS User Day – Video “A new understanding of galaxy formation” by Lucio Mayer

Friday, November 4th, 2011

We continue the series of videos about the CSCS User Day 2011 with the keynote presentation of Lucio Mayer, professor at the University of Zurich about “A new understanding of galaxy formation from the latest generation of supercomputer simulations“.

Lucio Mayer presented his latest research work, in which he and his team succeeded for the first time in achieving a detailed simulation of the origin of the Milky Way. The visualisation of the simulation published on YouTube attracted a level of attention previously unsurpassed in the field of astrophysics simulations, registering more than 228,000 clicks.

CP2K is 10 Years Old – A Computer Program for the Future

Tuesday, October 25th, 2011

The molecular scientist Jürg Hutter, Professor at the University of Zurich, began developing CP2K about ten years ago in collaboration with the research group led by Michele Parrinello, Professor of Computational Science at ETH Zurich and the Università della Svizzera italiana.

The CP2K program now consists of nearly a million lines of code and is continuously being developed by international teams. It uses many different algorithms and complex numerical structures. It is hard to target these to current computer architectures, so in the last two years Hutter and his team have been focussing on optimising the program for use on the still new computer architectures that are based on multicore processors, where there are several processors on one chip, or graphic processors (GPUs).

A structured two-dimensional surface. These so-called nanomeshes can be used as a type of template for developing new materials.

CSCS dedicates a longer article to CP2K with an interview with Jürg Hutter and Joost VandeVondele, senior research assistant in Hutter´s team. Hutter and VandeVondele explain the many-sided applications of CP2K in science and industry like, the exploration of new energy sources as the solar cells known as Grätzel cells.

Read the article published by CSCS »

Q&A with Lucio Mayer about ERIS, the first simulation of the birth of the Milky Way

Wednesday, September 14th, 2011

Lucio Mayer and his team simulated for the first time worldwide the birth of the Milky Way. The results stimulated many discussions in online forums. Lucio answers our questions.

  • Lucio, this is the first simulation that allows reproducing the birth and evolution of a Milky Way-like galaxy. What are the main difficulties and challenges in achieving such results? Why couldn´t we get to this point before?
  • How can we be confident that this is the way things actually took place? Can we compare to real objects that we observe in the sky?
  • You spoke about the key-role of Dark Matter in the simulation. What is Dark Matter? Which are the evidences that it exists?
  • Many viewers complained about the low resolution of the movie. Wouldn´t it have been possible to produce a HD movie?
  • The costs of this simulation, in terms of computing systems, power, and work is very high. What´s the return of this effort and its impact on society?
  • What are the main challenges in astrophysics currently studied with the help of the supercomputers?
  • What are the perspectives for this kind of research? What´s still missing in your model? How will you improve it in the future?
  • You stopped your simulation after 13 billion of years. What will happen if you would continue? What will happen in the end?