Large-scale micromagnetics simulations with dipolar interaction using all-to-all communications
We implement on our micromagnetics simulator low-complexity parallel fast-Fourier-transform algorithms, which reduces the frequency of all-to-all communications from six to two times. Almost all the computation time of micromagnetics simulation is taken up by the calculation of the magnetostatic fie...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2016-05-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.4944338 |
| _version_ | 1818032269643743232 |
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| author | Hiroshi Tsukahara S.-J. Lee Kaoru Iwano Nobuhito Inami Tadashi Ishikawa Chiharu Mitsumata Hideto Yanagihara Eiji Kita Kanta Ono |
| author_facet | Hiroshi Tsukahara S.-J. Lee Kaoru Iwano Nobuhito Inami Tadashi Ishikawa Chiharu Mitsumata Hideto Yanagihara Eiji Kita Kanta Ono |
| author_sort | Hiroshi Tsukahara |
| collection | DOAJ |
| description | We implement on our micromagnetics simulator low-complexity parallel fast-Fourier-transform algorithms, which reduces the frequency of all-to-all communications from six to two times. Almost all the computation time of micromagnetics simulation is taken up by the calculation of the magnetostatic field which can be calculated using the fast Fourier transform method. The results show that the simulation time is decreased with good scalability, even if the micromagentics simulation is performed using 8192 physical cores. This high parallelization effect enables large-scale micromagentics simulation using over one billion to be performed. Because massively parallel computing is needed to simulate the magnetization dynamics of real permanent magnets composed of many micron-sized grains, it is expected that our simulator reveals how magnetization dynamics influences the coercivity of the permanent magnet. |
| first_indexed | 2024-12-10T06:04:41Z |
| format | Article |
| id | doaj.art-ddb4b61d1f284ba69c9c99b2ebc2986d |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-10T06:04:41Z |
| publishDate | 2016-05-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-ddb4b61d1f284ba69c9c99b2ebc2986d2022-12-22T01:59:44ZengAIP Publishing LLCAIP Advances2158-32262016-05-0165056405056405-410.1063/1.4944338123691ADVLarge-scale micromagnetics simulations with dipolar interaction using all-to-all communicationsHiroshi Tsukahara0S.-J. Lee1Kaoru Iwano2Nobuhito Inami3Tadashi Ishikawa4Chiharu Mitsumata5Hideto Yanagihara6Eiji Kita7Kanta Ono8High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, JapanInstitute of Applied Physics, University of Tsukuba, Tsukuba 305-8573, JapanHigh Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, JapanHigh Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, JapanHigh Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, JapanNational Institute for Materials Science (NIMS), Tsukuba 305-0047, JapanInstitute of Applied Physics, University of Tsukuba, Tsukuba 305-8573, JapanInstitute of Applied Physics, University of Tsukuba, Tsukuba 305-8573, JapanHigh Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, JapanWe implement on our micromagnetics simulator low-complexity parallel fast-Fourier-transform algorithms, which reduces the frequency of all-to-all communications from six to two times. Almost all the computation time of micromagnetics simulation is taken up by the calculation of the magnetostatic field which can be calculated using the fast Fourier transform method. The results show that the simulation time is decreased with good scalability, even if the micromagentics simulation is performed using 8192 physical cores. This high parallelization effect enables large-scale micromagentics simulation using over one billion to be performed. Because massively parallel computing is needed to simulate the magnetization dynamics of real permanent magnets composed of many micron-sized grains, it is expected that our simulator reveals how magnetization dynamics influences the coercivity of the permanent magnet.http://dx.doi.org/10.1063/1.4944338 |
| spellingShingle | Hiroshi Tsukahara S.-J. Lee Kaoru Iwano Nobuhito Inami Tadashi Ishikawa Chiharu Mitsumata Hideto Yanagihara Eiji Kita Kanta Ono Large-scale micromagnetics simulations with dipolar interaction using all-to-all communications AIP Advances |
| title | Large-scale micromagnetics simulations with dipolar interaction using all-to-all communications |
| title_full | Large-scale micromagnetics simulations with dipolar interaction using all-to-all communications |
| title_fullStr | Large-scale micromagnetics simulations with dipolar interaction using all-to-all communications |
| title_full_unstemmed | Large-scale micromagnetics simulations with dipolar interaction using all-to-all communications |
| title_short | Large-scale micromagnetics simulations with dipolar interaction using all-to-all communications |
| title_sort | large scale micromagnetics simulations with dipolar interaction using all to all communications |
| url | http://dx.doi.org/10.1063/1.4944338 |
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