PMO OpenIR  > 分子云与恒星形成研究团组
Acceleration of solving non-equilibrium ionization via tracer particles and mapreduce on eulerian mesh
Alternative Title15
Xiao, Jian; Xu, Xingyu; Sun, Jizhou; Zhou, Xin; Ji, Li
2014
Source PublicationLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics),
ISSN0302-9743
Volume8631Issue:0Pages:29-42
AbstractNon-equilibrium ionization (NEI) is an important phenomenon related to many astrophysical processes, but the traditional method, which tightly couples the NEI solver with Eulerian mesh infrastructure, introduced high overhead on computing, memory and communication. In order to overcome the shortcomings of the pure Eulerian scheme, a new approach employing tracer particles and MapReduce model to solve the NEI problem was proposed. We introduce (1) a particle-dumping scheme for tackling the problem of large amounts of small particle snapshots continuously generated at each evolution step, (2) a parallel method based on the MapReduce model to solve the NEI equations along the particle trajectories. Both post-processing and nonintrusive in-situ schemes are supported in the paper's approach. The approach was prototyped and tested based on the FLASH multiphysics simulation framework, and it is easily adapted to other simulations modeling reactive flow on Eulerian mesh. Evaluations on up to 192 cores show that our approach can improve the end-to-end performance of a real world simulation by 3-fold above. © 2014 Springer International Publishing Switzerland.(18 refs)
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/10575
Collection分子云与恒星形成研究团组
Recommended Citation
GB/T 7714
Xiao, Jian,Xu, Xingyu,Sun, Jizhou,et al. Acceleration of solving non-equilibrium ionization via tracer particles and mapreduce on eulerian mesh[J]. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics),,2014,8631(0):29-42.
APA Xiao, Jian,Xu, Xingyu,Sun, Jizhou,Zhou, Xin,&Ji, Li.(2014).Acceleration of solving non-equilibrium ionization via tracer particles and mapreduce on eulerian mesh.Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics),,8631(0),29-42.
MLA Xiao, Jian,et al."Acceleration of solving non-equilibrium ionization via tracer particles and mapreduce on eulerian mesh".Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 8631.0(2014):29-42.
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