Toward Realization of Numerical Towing-Tank Tests by Wall-Resolved Large Eddy Simulation based on 32 Billion Grid Finite-Element Computation
| Autor: | Kiyoshi Kumahata, Katsuhiro Nagano, Chisachi Kato, Kazuo Minami, Yoshinobu Yamade, Tatsuo Nishikawa |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
020303 mechanical engineering & transports
0203 mechanical engineering Computer science 0202 electrical engineering electronic engineering information engineering 02 engineering and technology Grid Throughput (business) Realization (systems) Finite element method Towing 020202 computer hardware & architecture Computational science Large eddy simulation |
| Zdroj: | SC |
| DOI: | 10.1109/sc41405.2020.00007 |
| Popis: | To realize numerical towing-tank tests by substantially shortening the time to the solution, a general-purpose Finite-Element flow solver, named FrontFlow/blue (FFB), has been fully optimized so as to achieve maximum possible sustained memory throughputs with three of its four hot kernels. A single-node sustained performance of 179.0 GFLOPS, which corresponds to 5.3% of the peak performance, has been achieved on Fugaku, the next flagship computer of Japan. A weak-scale benchmark test has confirmed that FFB runs with a parallel efficiency of over 85% up to 5,505,024 compute cores, and an overall sustained performance of16.7 PFLOPS has been achieved. As a result, the time needed for large-eddy simulation using 32 billion grids has been significantly reduced from almost two days to only 37 min., or by a factor of 71. This has clearly indicated that a numerical towing-tank could actually be built for ship hydrodynamics within a few years. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|