{"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00233148","sets":["1164:2240:11467:11522"]},"path":["11522"],"owner":"44499","recid":"233148","title":["不連続ガラーキン法を用いた大気力学コアの性能評価と改善について"],"pubdate":{"attribute_name":"公開日","attribute_value":"2024-03-11"},"_buckets":{"deposit":"983c1cfe-57fc-419e-8226-2dd86ce760a6"},"_deposit":{"id":"233148","pid":{"type":"depid","value":"233148","revision_id":0},"owners":[44499],"status":"published","created_by":44499},"item_title":"不連続ガラーキン法を用いた大気力学コアの性能評価と改善について","author_link":["632701","632693","632702","632703","632698","632704","632694","632705","632706","632708","632707","632696","632695","632700","632697","632699"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"不連続ガラーキン法を用いた大気力学コアの性能評価と改善について"},{"subitem_title":"Performance Evaluation and Optimization of Discontinuous Galerkin Method based Atmospheric Dynamic Core","subitem_title_language":"en"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"CFD","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2024-03-11","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":"理化学研究所計算科学研究センター"},{"subitem_text_value":"理化学研究所計算科学研究センター"},{"subitem_text_value":"名古屋大学情報基盤センター"},{"subitem_text_value":"理化学研究所計算科学研究センター"},{"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"},{"subitem_text_value":"名古屋大学情報基盤センター"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"Graduate School of Informatics, Nagoya University","subitem_text_language":"en"},{"subitem_text_value":"RIKEN Center for Computational Science","subitem_text_language":"en"},{"subitem_text_value":"RIKEN Center for Computational Science","subitem_text_language":"en"},{"subitem_text_value":"Information Technology Center, Nagoya University","subitem_text_language":"en"},{"subitem_text_value":"RIKEN Center for Computational Science","subitem_text_language":"en"},{"subitem_text_value":"Information Technology Center, Nagoya University","subitem_text_language":"en"},{"subitem_text_value":"Information Technology Center, Nagoya University","subitem_text_language":"en"},{"subitem_text_value":"Information Technology Center, Nagoya University","subitem_text_language":"en"}]},"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/233148/files/IPSJ-HPC24193006.pdf","label":"IPSJ-HPC24193006.pdf"},"date":[{"dateType":"Available","dateValue":"2026-03-11"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-HPC24193006.pdf","filesize":[{"value":"761.9 kB"}],"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":"6ff86b96-40d4-4a71-8003-a3cb8ff846c1","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":"任, 軒正博"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"河合, 佑太"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"富田, 浩文"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"片桐, 孝洋"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"西澤, 誠也"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"星野, 哲也"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"河合, 直聡"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"永井, 亨"}],"nameIdentifiers":[{}]}]},"item_4_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Xuanzhengbo, Ren","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yuta, Kawai","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Hirofumi, Tomita","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Takahiro, Katagiri","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Seiya, Nishizawa","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Tetsuya, Hoshino","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Masatoshi, Kawai","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Toru, Nagai","creatorNameLang":"en"}],"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":"将来の高解像度大気シミュレーションのために，理研 R-CCS が開発している SCALE ライブラリーの高精度流体スキームのオプションとして，不連続ガラーキン法（DGM）を用いた大気力学コア SCALE-DG を開発している．DGM では, 空間離散化が局所的に行われるため，現代の計算機アーキテクチャにおいて高い計算性能が期待できる．本研究では，水平・鉛直陽解法（HEVE）スキームを用いた SCALE-DG プログラムの性能評価を行った．その結果，SCALE-DG は 384 プロセス（4608 コア）まで優れた並列化効率を示した一方で，単体性能では，体積分・面積分に関する要素ごとの微分計算，境界での数値流束評価，および数値フィルタの処理は主なボトルネックとなっていることが確認できた．また，性能ボトルネックである要素ごとの微分計算，境界での数値流束評価に対するチューニング手法を提案し，それぞれ 1.13 倍と 1.02 倍の高速化を実現した．","subitem_description_type":"Other"}]},"item_4_description_8":{"attribute_name":"論文抄録(英)","attribute_value_mlt":[{"subitem_description":"For future high-resolution atmospheric simulations, a dynamical core using discontinuous Galerkin Method (DGM), called SCALE-DG, is being developed as an option of high-order fluid schemes in SCALE library developed by RIKEN R-CCS. Since the spatial discretization is done locally, we expect the computational performance is highly desirable in modern computer architectures. In this study, we evaluated the scalability and node-level performance of SCALE-DG program with horizontal explicit and vertical explicit (HEVE) scheme. The results show that the program performed excellently in strong and weak scaling up to 384 processes (4608 cores). In node-level performance, the part of calculating volume and surface integration, dealing with boundary flux evaluation and the numerical filter are confirmed as main bottlenecks. To improve these performance bottlenecks, optimization works were utilized to the part of calculating volume and surface integration, dealing with boundary flux evaluation, which obtained 1.13x and 1.02x speedup respectively.","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"6","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":"2024-03-11","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"6","bibliographicVolumeNumber":"2024-HPC-193"}]},"relation_version_is_last":true,"weko_creator_id":"44499"},"id":233148,"updated":"2025-01-19T10:11:43.150072+00:00","links":{},"created":"2025-01-19T01:34:25.230152+00:00"}