Molecular dynamics simulation of complex multiphase flow on a computer cluster with GPUs |
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Authors: | FeiGuo Chen Wei Ge JingHai Li |
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Affiliation: | (1) State Key Laboratory of Multi-Phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China;(2) Graduate University of Chinese Academy of Sciences, Beijing, 100039, China |
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Abstract: | Compute Unified Device Architecture (CUDA) was used to design and implement molecular dynamics (MD) simulations on graphics processing units (GPU). With an NVIDIA Tesla C870, a 20–60 fold speedup over that of one core of the Intel Xeon 5430 CPU was achieved, reaching up to 150 Gflops. MD simulation of cavity flow and particle-bubble interaction in liquid was implemented on multiple GPUs using a message passing interface (MPI). Up to 200 GPUs were tested on a special network topology, which achieves good scalability. The capability of GPU clusters for large-scale molecular dynamics simulation of meso-scale flow behavior was, therefore, uncovered. Supported by the National Natural Science Foundation of China (Grant Nos. 20336040, 20221603 and 20490201), and the Chinese Academy of Sciences (Grant No. Kgcxz-yw-124) |
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Keywords: | multiphase flow molecular dynamics CUDA GPU parallel computing |
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