{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,23]],"date-time":"2026-06-23T00:57:47Z","timestamp":1782176267252,"version":"3.54.5"},"reference-count":39,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[2022,1,2]],"date-time":"2022-01-02T00:00:00Z","timestamp":1641081600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002241","name":"Japan Science and Technology Agency","doi-asserted-by":"publisher","award":["JP-MJCR16N5"],"award-info":[{"award-number":["JP-MJCR16N5"]}],"id":[{"id":"10.13039\/501100002241","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001700","name":"Ministry of Education, Culture, Sports, Science and Technology","doi-asserted-by":"publisher","award":["A priority issue 7 to be tackled by using Post-K"],"award-info":[{"award-number":["A priority issue 7 to be tackled by using Post-K"]}],"id":[{"id":"10.13039\/501100001700","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001700","name":"Ministry of Education, Culture, Sports, Science and Technology","doi-asserted-by":"publisher","award":["JPMXS0118068681"],"award-info":[{"award-number":["JPMXS0118068681"]}],"id":[{"id":"10.13039\/501100001700","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["The International Journal of High Performance Computing Applications"],"published-print":{"date-parts":[[2022,3]]},"abstract":"<jats:p>\n                    In the field of optical science, it is becoming increasingly important to observe and manipulate matter at the atomic scale using ultrashort pulsed light. For the first time, we have performed the ab initio simulation solving the Maxwell equation for light electromagnetic fields, the time-dependent Kohn-Sham equation for electrons, and the Newton equation for ions in extended systems. In the simulation, the most time-consuming parts were stencil and nonlocal pseudopotential operations on the electron orbitals as well as fast Fourier transforms for the electron density. Code optimization was thoroughly performed on the Fujitsu A64FX processor to achieve the highest performance. A simulation of amorphous SiO\n                    <jats:sub>2<\/jats:sub>\n                    thin film composed of more than 10,000 atoms was performed using 27,648 nodes of the Fugaku supercomputer. The simulation achieved excellent time-to-solution with the performance close to the maximum possible value in view of the memory bandwidth bound, as well as excellent weak scalability.\n                  <\/jats:p>","DOI":"10.1177\/10943420211065723","type":"journal-article","created":{"date-parts":[[2022,1,3]],"date-time":"2022-01-03T02:58:57Z","timestamp":1641178737000},"page":"182-197","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":11,"title":["Large-scale ab initio simulation of light\u2013matter interaction at the atomic scale in Fugaku"],"prefix":"10.1177","volume":"36","author":[{"given":"Yuta","family":"Hirokawa","sequence":"first","affiliation":[{"name":"Center for Computational Sciences, University of Tsukuba, Tsukuba, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Atsushi","family":"Yamada","sequence":"additional","affiliation":[{"name":"Center for Computational Sciences, University of Tsukuba, Tsukuba, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shunsuke","family":"Yamada","sequence":"additional","affiliation":[{"name":"Center for Computational Sciences, University of Tsukuba, Tsukuba, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masashi","family":"Noda","sequence":"additional","affiliation":[{"name":"Center for Computational Sciences, University of Tsukuba, Tsukuba, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mitsuharu","family":"Uemoto","sequence":"additional","affiliation":[{"name":"Department of Electrical and Electronic Engineering, Kobe University, Kobe, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Taisuke","family":"Boku","sequence":"additional","affiliation":[{"name":"Center for Computational Sciences, University of Tsukuba, Tsukuba, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4478-6426","authenticated-orcid":false,"given":"Kazuhiro","family":"Yabana","sequence":"additional","affiliation":[{"name":"Center for Computational Sciences, University of Tsukuba, Tsukuba, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2022,1,2]]},"reference":[{"key":"bibr1-10943420211065723","doi-asserted-by":"publisher","DOI":"10.1088\/0953-8984\/24\/23\/233202"},{"key":"bibr2-10943420211065723","doi-asserted-by":"publisher","DOI":"10.1021\/ct400520e"},{"key":"bibr3-10943420211065723","doi-asserted-by":"publisher","DOI":"10.1039\/C5CP00351B"},{"key":"bibr4-10943420211065723","volume-title":"Arm C Language Extensions for SVE","author":"Arm Developer","year":"2010"},{"key":"bibr5-10943420211065723","unstructured":"ARTED Developers (2016) ARTED Github. 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