{"id":210485,"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00210485","sets":["1164:1579:10482:10561"]},"path":["10561"],"owner":"44499","recid":"210485","title":["ギャザー/スキャッタを効率化するOut-of-Stepパイプライン"],"pubdate":{"attribute_name":"公開日","attribute_value":"2021-03-18"},"_buckets":{"deposit":"27883d31-3b6c-47cc-9b9e-7a526e8cb00f"},"_deposit":{"id":"210485","pid":{"type":"depid","value":"210485","revision_id":0},"owners":[44499],"status":"published","created_by":44499},"item_title":"ギャザー/スキャッタを効率化するOut-of-Stepパイプライン","author_link":["533009","533010","533006","533007","533011","533008"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"ギャザー/スキャッタを効率化するOut-of-Stepパイプライン"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"プロセッサアーキテクチャ","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2021-03-18","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"（株）富士通研究所"},{"subitem_text_value":"（株）富士通研究所"},{"subitem_text_value":"（株）富士通研究所"},{"subitem_text_value":"（株）富士通研究所"},{"subitem_text_value":"（株）富士通研究所"},{"subitem_text_value":"国立情報学研究所"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"Fujitsu 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毅"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"依田, 勝洋"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"一場, 利幸"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"伊藤, 真紀子"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"吉川, 隆英"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"五島, 正裕"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN10096105","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":"2188-8574","subitem_source_identifier_type":"ISSN"}]},"item_4_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"A64FX や x86 プロセッサなどの汎用プロセッサ・コアの SIMD ユニットには，① SIMD の基本的な使用方法である水平計算によって生じる水平命令と，② ギャザー/スキャッタなどの不連続アクセスに，それぞれスケーラビリティの問題があり，SIMD 幅を拡大してもほとんど性能向上しない．計算の方法を垂直型にすれば水平命令を用いずに済むが，不連続アクセスを多用することになる．不連続アクセスの性能をスケーラブルにするためには，一次データ・キャッシュの多バンク化が避けられない．しかし従来のパイプラインでは，バンク衝突によるストール/フラッシュが毎サイクルのように発生するため，やはりスケーラビリティの問題に帰着する．本稿では，バンク衝突が起こってもストール/フラッシュを起こさない Out-of-Step バックエンド・パイプラインを提案する．机上計算により HPCG のカーネルを評価した結果，対 A64FX 比で，SIMD のビット幅を 1024 とした場合に 4.7 倍，2048 とした場合に 9.5 倍の性能向上を得られることが分かった．","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"15","bibliographic_titles":[{"bibliographic_title":"研究報告システム・アーキテクチャ（ARC）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2021-03-18","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"36","bibliographicVolumeNumber":"2021-ARC-244"}]},"relation_version_is_last":true,"weko_creator_id":"44499"},"updated":"2025-01-19T18:08:43.083569+00:00","created":"2025-01-19T01:11:42.255722+00:00","links":{}}