{"created":"2025-07-10T01:42:49.709111+00:00","metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:02003148","sets":["1164:2240:11899:1752109082809"]},"path":["1752109082809"],"owner":"80578","recid":"2003148","title":["Cerebras CS-2における格子ボルツマン法の複数PE実装の検討"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2025-07-28"},"_buckets":{"deposit":"950dcfb7-864e-4582-a264-4f9f45f8fff8"},"_deposit":{"id":"2003148","pid":{"type":"depid","value":"2003148","revision_id":0},"owners":[80578],"status":"published","created_by":80578},"item_title":"Cerebras CS-2における格子ボルツマン法の複数PE実装の検討","author_link":[],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Cerebras CS-2における格子ボルツマン法の複数PE実装の検討","subitem_title_language":"ja"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"最適化","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2025-07-28","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"明治大学理工学研究科情報科学専攻"},{"subitem_text_value":"明治大学理工学研究科情報科学専攻"},{"subitem_text_value":"東京大学情報基盤センター"},{"subitem_text_value":"明治大学理工学研究科情報科学専攻"}]},"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/2003148/files/IPSJ-HPC25200011.pdf","label":"IPSJ-HPC25200011.pdf"},"date":[{"dateType":"Available","dateValue":"2027-07-28"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-HPC25200011.pdf","filesize":[{"value":"1.9 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":"a7d6e210-28ce-4e35-8aa5-0eb6a681d12c","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2025 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"酒井,宏己"}]},{"creatorNames":[{"creatorName":"折原,冴保"}]},{"creatorNames":[{"creatorName":"下川辺,隆史"}]},{"creatorNames":[{"creatorName":"宮島,敬明"}]}]},"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":"近年のコンピュータは演算性能の向上が著しい一方で、Byte/Flops値に代表される演算性能に対するメモリ帯域幅の比率は悪化している。Cerebras CS-2は、深層学習における大規模言語モデルの学習ワークロードを高速化するために設計されたアクセラレータであり、世界最大のチップであるWafer Scale Engine-2を搭載している。格子ボルツマン法（Lattice Boltzmann Method, LBM）は、数値流体力学の分野で盛んに研究されてる計算手法の一つである。流体を微小な粒子の集まりとして近似し、各粒子の並進と衝突とを粒子の速度分布関数を用いて逐次計算することで、流体の大規模な動きを再現する。本研究では、複数PEを用いた実装に必須の、対角方向に隣接する格子点とのデータ転送を2ステップで行なう方法を提案する。また、1PEに1格子点を割り当て、境界格子を含む17×17格子を17×17PEで実行した場合の演算性能を測定した。この時の演算性能は695.1MFlops/sと29.5MULPSであった。","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"8","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":"2025-07-28","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"11","bibliographicVolumeNumber":"2025-HPC-200"}]},"relation_version_is_last":true,"weko_creator_id":"80578"},"id":2003148,"updated":"2025-07-10T01:42:54.128241+00:00","links":{}}