Hokkaido University and Riken Japanese Computing Center come to reveal some figures on the use of the K supercomputer by the Japanese automobile industry.
13 builders and manufacturers in the sector have access to the most powerful computer in the archipelago in order to improve their digital simulation results. Their goal is to develop more efficient vehicles from an aerodynamic point of view and so in terms of consumption.
More power for more accurate simulations
First calculator to pass the bar of 10 Petaflops, the K is the most powerful computer in the Japan and it still points in 4th place in the world ranking. This machine and its 88.128 processor SPARC64 VIIIfx including operated by a consortium of 13 manufacturers and Japanese manufacturers in the automotive industry, including Honda, Suzuki.
Makoto Tsubokura, professeur associé de l’école d’engineering de l’université d’Hokkaido milite pour la montée en puissance des supercalculateur pour améliorer les simulations des constructeurs automobiles.
Makoto Tsubokura, Associate Professor of the school of engineering of the University of Hokkaido, notes that thanks to access to a machine of the petaflops-scale, the resolution of the models tested 3D class reached now the millimeter, and the number of calculation cell has now reached 20 billion. By comparison, with a Teraflopique machine, the resolution is only 10 mm and the number of cell of the order of a few hundreds of thousands of cell, up to 1 million.
New phenomena can now be simulated
The power available to reduce the margin of error between the calculation and the actual data. Of the order of 5% would be lowered to 2% only. In addition, the researcher says developed techniques of mesh models, a necessary step to the numerical simulation that allow multiply by 100 the speed of the simulation.
This calculation “high-resolution” to increase the number of phenomena it is possible to simulate numerically. Aerodynamic calculations will be more reliable, but it will be possible to simulate the behaviour of the vehicle facing gale-force winds, side winds or aerodynamic noise, cooling the engine and brakes, and even traces of dirt.
The power of the supercomputers race is far from being only a matter of prestige between superpowers, is a very direct factor of competitiveness for their industry.
Translation: Bing Translator
Source : “Automotive Aerodynamics Simulation Using a Supercomputer”, Diginfo, October 24, 2014