{"links":{},"id":237586,"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00237586","sets":["1164:2240:11467:11704"]},"path":["11704"],"owner":"44499","recid":"237586","title":["格子<i>H</i>行列を用いた地震シミュレーションのマルチGPU並列化"],"pubdate":{"attribute_name":"公開日","attribute_value":"2024-08-01"},"_buckets":{"deposit":"c8c42993-378b-41c2-b2d3-6e64048b87ef"},"_deposit":{"id":"237586","pid":{"type":"depid","value":"237586","revision_id":0},"owners":[44499],"status":"published","created_by":44499},"item_title":"格子<i>H</i>行列を用いた地震シミュレーションのマルチGPU並列化","author_link":["650613","650614","650611","650612","650615","650608","650610","650609"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"格子<i>H</i>行列を用いた地震シミュレーションのマルチGPU並列化"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"並列計算","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2024-08-01","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"名古屋大学大学院情報学研究科"},{"subitem_text_value":"名古屋大学情報基盤センター／東京大学情報基盤センター"},{"subitem_text_value":"スタンフォード大学地球物理学科／東京大学地震研究所"},{"subitem_text_value":"海洋研究開発機構付加価値情報創生部門"},{"subitem_text_value":"東京大学大学院理学系研究科"},{"subitem_text_value":"名古屋大学情報基盤センター"},{"subitem_text_value":"名古屋大学情報基盤センター"},{"subitem_text_value":"名古屋大学情報基盤センター"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_publisher":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"情報処理学会","subitem_publisher_language":"ja"}]},"publish_status":"0","weko_shared_id":-1,"item_file_price":{"attribute_name":"Billing file","attribute_type":"file","attribute_value_mlt":[{"url":{"url":"https://ipsj.ixsq.nii.ac.jp/record/237586/files/IPSJ-HPC24195025.pdf","label":"IPSJ-HPC24195025.pdf"},"date":[{"dateType":"Available","dateValue":"2026-08-01"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-HPC24195025.pdf","filesize":[{"value":"1.5 MB"}],"mimetype":"application/pdf","priceinfo":[{"tax":["include_tax"],"price":"660","billingrole":"5"},{"tax":["include_tax"],"price":"330","billingrole":"6"},{"tax":["include_tax"],"price":"0","billingrole":"14"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"c30ad942-1c3a-4547-93c0-dfc4e662ab65","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2024 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"百武, 尚輝"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"星野, 哲也"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"小澤, 創"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"伊田, 明弘"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"安藤, 亮輔"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"河合, 直聡"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"永井, 亨"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"片桐, 孝洋"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN10463942","subitem_source_identifier_type":"NCID"}]},"item_4_textarea_12":{"attribute_name":"Notice","attribute_value_mlt":[{"subitem_textarea_value":"SIG Technical Reports are nonrefereed and hence may later appear in any journals, conferences, symposia, etc."}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourceuri":"http://purl.org/coar/resource_type/c_18gh","resourcetype":"technical report"}]},"item_4_source_id_11":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"2188-8841","subitem_source_identifier_type":"ISSN"}]},"item_4_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"境界要素法を用いた地震シミュレーションでは，境界要素法の係数行列として現れる密行列を用いた密行列・ベクトル積を行う必要があり，密行列・ベクトル積にシミュレーションの性能が律速される．近年では，密行列の代わりに低ランク近似行列である H 行列や格子 H 行列を用いることによる行列・ベクトル積の計算量の削減により，シミュレーションの高速化が達成されている．地震シミュレーションプログラムである HBI では，格子 H 行列を用いた CPU クラスタにおける地震シミュレーションが実装されている．HBI の GPU クラスタでの実行による高速化が期待される一方，格子 H 行列の複雑な構造により HBI のマルチ GPU 並列化の有効的な手法は明らかでない．そこで本研究では，OpenACC を用いた HBI のマルチ GPU 並列化の手法の提案と性能評価を行った．その結果，シングル GPU 実行では OpenMP による CPU 並列と比較して約 3.1 倍の性能向上を達成し，マルチ GPU 実行では GPU 数の増加に伴う性能向上が見られ，16GPU 実行で 1GPU 実行と比較して約 3.7 倍の性能向上を達成した．","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"11","bibliographic_titles":[{"bibliographic_title":"研究報告ハイパフォーマンスコンピューティング（HPC）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2024-08-01","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"25","bibliographicVolumeNumber":"2024-HPC-195"}]},"relation_version_is_last":true,"weko_creator_id":"44499"},"created":"2025-01-19T01:40:17.836330+00:00","updated":"2025-01-19T08:50:06.457631+00:00"}