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| Presentation | 2011-10-21 14:15 A Multi-Scale Electromagnetic Particle Code with Adaptive Mesh Refinement and Its Parallelization Hideyuki Usui (Kobe Univ.), Masanori Nunami (NIFS), Yohei Yagi, Tatsuki Matsui (Kobe Univ.), Toseo Moritaka (Osaka Univ.)  CPSY2011-32 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Space plasma phenomena occur in multi-scale processes from the electron scale to the magnetohydrodynamic scale. To investigate such multi-scale phenomena including plasma kinetic effects, we started to develop a new electromagnetic Particle-In-Cell (PIC) code with Adaptive Mesh Refinement (AMR) technique. AMR can realize high-resolution calculation saving computer resources by generating and removing hierarchical cells dynamically. In the parallelization, we adopt domain decomposition method and for good locality preserving and dynamical load balancing, we will use the Morton ordered curve. In the PIC method, particle calculation occupies most of the total calculation time. In our AMR-PIC code, time step intervals are also refined. To realize the load balancing between processes in the domain decomposition scheme, it is the most essential to consider the number of particle calculation loops for each cell among all hierarchical levels as a work weight for each processor. Therefore, we calculate the work weights based on the cost of particle calculation and hierarchical levels of each cell. Then we decompose the domain according to the Morton curve and the work weight, so that each processor has approximately the same amount of work. By performing a simple one-dimensional simulation, we confirmed that the dynamic load balancing is achieved and the computation time is reduced by introducing the dynamic domain decomposition scheme. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Plasma simulation / Adaptive Mesh Refinement / Particle-In-Cell / domain decomposition / parallelization / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 255, CPSY2011-32, pp. 41-46, Oct. 2011. | |
| Paper # | CPSY2011-32 | |
| Date of Issue | 2011-10-14 (CPSY) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | CPSY2011-32 |
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| Conference Information | |
| Committee | CPSY |
| Conference Date | 2011-10-21 - 2011-10-21 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | CPSY |
| Conference Code | 2011-10-CPSY |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Multi-Scale Electromagnetic Particle Code with Adaptive Mesh Refinement and Its Parallelization |
| Sub Title (in English) | |
| Keyword(1) | Plasma simulation |
| Keyword(2) | Adaptive Mesh Refinement |
| Keyword(3) | Particle-In-Cell |
| Keyword(4) | domain decomposition |
| Keyword(5) | parallelization |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Hideyuki Usui |
| 1st Author's Affiliation | Kobe University (Kobe Univ.) |
| 2nd Author's Name | Masanori Nunami |
| 2nd Author's Affiliation | National Institute for Fusion Research (NIFS) |
| 3rd Author's Name | Yohei Yagi |
| 3rd Author's Affiliation | Kobe University (Kobe Univ.) |
| 4th Author's Name | Tatsuki Matsui |
| 4th Author's Affiliation | Kobe University (Kobe Univ.) |
| 5th Author's Name | Toseo Moritaka |
| 5th Author's Affiliation | Osaka University (Osaka Univ.) |
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| Speaker | Author-1 |
| Date Time | 2011-10-21 14:15:00 |
| Presentation Time | 20 minutes |
| Registration for | CPSY |
| Paper # | CPSY2011-32 |
| Volume (vol) | vol.111 |
| Number (no) | no.255 |
| Page | pp.41-46 |
| #Pages | 6 |
| Date of Issue | 2011-10-14 (CPSY) |
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