SunwayLB: Enabling Extreme-Scale Lattice Boltzmann Method Based Computing Fluid Dynamics Simulations on Advanced Heterogeneous Supercomputers

The Lattice Boltzmann Method (LBM) is a class of Computational Fluid Dynamics methods which models the fluid as fictive particles. In this paper, we report our work on SunwayLB, which enables LBM based solutions aiming for industrial applications using advanced heterogeneous systems such as the Sunw...

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Veröffentlicht in:IEEE transactions on parallel and distributed systems Jg. 35; H. 2; S. 324 - 337
Hauptverfasser: Liu, Zhao, Chu, Xuesen, Lv, Xiaojing, Meng, Hongsong, Liu, Hanyue, Zhu, Guanghui, Fu, Haohuan, Yang, Guangwen
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York IEEE 01.02.2024
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:
Bandwidth
Bandwidths
Clusters
Codes
Computational fluid dynamics
Computational modeling
Domain decomposition methods
Fluid dynamics
Fluid flow
Graphics processing units
heterogeneous (hybrid) systems
Industrial applications
lattice boltzmann method
Lattice Boltzmann methods
Mathematical models
Modeling
numerical algorithms and problems
Optimization
Optimization techniques
Simulation
Sunway supercomputers
Supercomputers
Utilization
Workload
ISSN:1045-9219, 1558-2183
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Abstract The Lattice Boltzmann Method (LBM) is a class of Computational Fluid Dynamics methods which models the fluid as fictive particles. In this paper, we report our work on SunwayLB, which enables LBM based solutions aiming for industrial applications using advanced heterogeneous systems such as the Sunway supercomputers. We propose several techniques to boost the simulation speed and improve the scalability of SunwayLB, including a customized multi-level domain decomposition and data sharing scheme, a carefully orchestrated strategy to fuse kernels with different performance constraints for a more balanced workload, and optimization strategies for assembly code. Based on these optimization schemes, we manage to scale SunwayLB on three advanced supercomputers: Sunway TaihuLight, the new Sunway Supercomputer and a GPU cluster. On Sunway TaihuLight, our largest simulation involves up to 5.6 trillion lattice cells, achieving 11,245 billion cell updates per second (GLUPS), 77% memory bandwidth utilization and a sustained performance of 4.7 PFlops. We further improve the memory bandwidth utilization and computational efficiency using the unique features of a new generation of Sunway supercomputer. On the new Sunway Supercomputer, the largest simulation contains over 4.2 trillion lattice cells, resulting in 6,583 GLUPS, 81% memory bandwidth utilization and a sustained performance of 2.76 PFlops. To evaluate the portability of our code, we also adapt our code to a GPU cluster with tailored optimization techniques, resulting in 191x speedup and 83.8% memory bandwidth utilization. We demonstrate a series of computational experiments for extreme-large scale fluid flow, as examples of real-world applications, to check the validity and performance of our work. The results show that our implementation is competent to be a highly scalable and efficient solution for large-scale CFD problems on heterogeneous systems.
AbstractList The Lattice Boltzmann Method (LBM) is a class of Computational Fluid Dynamics methods which models the fluid as fictive particles. In this paper, we report our work on SunwayLB, which enables LBM based solutions aiming for industrial applications using advanced heterogeneous systems such as the Sunway supercomputers. We propose several techniques to boost the simulation speed and improve the scalability of SunwayLB, including a customized multi-level domain decomposition and data sharing scheme, a carefully orchestrated strategy to fuse kernels with different performance constraints for a more balanced workload, and optimization strategies for assembly code. Based on these optimization schemes, we manage to scale SunwayLB on three advanced supercomputers: Sunway TaihuLight, the new Sunway Supercomputer and a GPU cluster. On Sunway TaihuLight, our largest simulation involves up to 5.6 trillion lattice cells, achieving 11,245 billion cell updates per second (GLUPS), 77% memory bandwidth utilization and a sustained performance of 4.7 PFlops. We further improve the memory bandwidth utilization and computational efficiency using the unique features of a new generation of Sunway supercomputer. On the new Sunway Supercomputer, the largest simulation contains over 4.2 trillion lattice cells, resulting in 6,583 GLUPS, 81% memory bandwidth utilization and a sustained performance of 2.76 PFlops. To evaluate the portability of our code, we also adapt our code to a GPU cluster with tailored optimization techniques, resulting in 191x speedup and 83.8% memory bandwidth utilization. We demonstrate a series of computational experiments for extreme-large scale fluid flow, as examples of real-world applications, to check the validity and performance of our work. The results show that our implementation is competent to be a highly scalable and efficient solution for large-scale CFD problems on heterogeneous systems.
Author Liu, Zhao
Yang, Guangwen
Zhu, Guanghui
Chu, Xuesen
Meng, Hongsong
Lv, Xiaojing
Fu, Haohuan
Liu, Hanyue
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  email: jn_zgh@126.com
  organization: Institute of Electronics and Information Technology, Zhengzhou University of Technology, Zhengzhou, China
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  organization: Department of Computer Science and Technology, Tsinghua University, Beijing, China
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Snippet The Lattice Boltzmann Method (LBM) is a class of Computational Fluid Dynamics methods which models the fluid as fictive particles. In this paper, we report our...
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SubjectTerms Bandwidth
Bandwidths
Clusters
Codes
Computational fluid dynamics
Computational modeling
Domain decomposition methods
Fluid dynamics
Fluid flow
Graphics processing units
heterogeneous (hybrid) systems
Industrial applications
lattice boltzmann method
Lattice Boltzmann methods
Mathematical models
Modeling
numerical algorithms and problems
Optimization
Optimization techniques
Simulation
Sunway supercomputers
Supercomputers
Utilization
Workload
Title SunwayLB: Enabling Extreme-Scale Lattice Boltzmann Method Based Computing Fluid Dynamics Simulations on Advanced Heterogeneous Supercomputers
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