{"created":"2025-01-19T01:00:09.207857+00:00","updated":"2025-01-19T23:12:12.208782+00:00","metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00195140","sets":["1164:2036:9683:9757"]},"path":["9757"],"owner":"44499","recid":"195140","title":["車載制御システムを対象としたLogical Execution Timeの実現手法"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-03-10"},"_buckets":{"deposit":"d18edd65-4436-4b8d-9641-640513bf1849"},"_deposit":{"id":"195140","pid":{"type":"depid","value":"195140","revision_id":0},"owners":[44499],"status":"published","created_by":44499},"item_title":"車載制御システムを対象としたLogical Execution Timeの実現手法","author_link":["463848","463852","463850","463849","463853","463851"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"車載制御システムを対象としたLogical Execution Timeの実現手法"},{"subitem_title":"The Realization of Logical Execution Time for Automotive Control Systems","subitem_title_language":"en"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"車載,マルチコア","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2019-03-10","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":"名古屋大学大学院情報学研究科"},{"subitem_text_value":"名古屋大学大学院情報学研究科"}]},"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":"Graduate School of Informatics, Nagoya University","subitem_text_language":"en"},{"subitem_text_value":"Graduate School of Informatics, 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/195140/files/IPSJ-SLDM19187004.pdf","label":"IPSJ-SLDM19187004.pdf"},"date":[{"dateType":"Available","dateValue":"2021-03-10"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-SLDM19187004.pdf","filesize":[{"value":"2.5 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":"10"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"101555d9-d676-4a0a-ab60-b2ad7b107b46","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2019 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"小川, 真彩高"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"本田, 晋也"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"高田, 広章"}],"nameIdentifiers":[{}]}]},"item_4_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Masataka, Ogawa","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Shinya, Honda","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Hiroaki, Takada","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA11451459","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":"2188-8639","subitem_source_identifier_type":"ISSN"}]},"item_4_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"近年,パワートレインアプリケーションのマルチコア化が進められてきている.しかし,コア間通信はタイミングが不定であることから検証が難しい.そのため,決定的なタイミングで通信を行う Logical Execution Time (LET) が注目されてきている.LET の実現手法として,単一の処理単位 (LET 処理) でタスク間通信を行う手法があるが,これには実行オーバヘッドが大きいという問題がある.また,安全性に影響しないタスクは,エンジンの高回転時にデッドラインミスする可能性があるが,既存の LET の実現手法ではそれを考慮していない.本研究では,デッドラインミスを考慮した LET の実装方法を提案し,その上で LET 処理を複数コアに効率的に分散する手法を提案する.評価の結果,本手法は単一の LET 処理の場合と比較して CPU 負荷の削減が可能であることがわかった.","subitem_description_type":"Other"}]},"item_4_description_8":{"attribute_name":"論文抄録(英)","attribute_value_mlt":[{"subitem_description":"In recent years, adapting a multicore architecture for powertrain applications has been proceeding. However, it is difficult to verify timings of inter-core communication of tasks because they are variable for each instance of a task. For this reason, Logical Execution Time (LET), which realizes communication at determined timings, is attracting a lot of attention now. An existing approach for LET realizes inter-task communication via a single dedicated process (LET process), however this approach causes a large execution overhead. In addition, existing approaches do not assume the possibility that safety-unrelated tasks miss their deadline when an engine rotates at a high speed. In this paper, we propose a realization approach for LET assuming the possibility, moreover an approach that efficiently distributes operations of an LET process into several cores. As a result of an evaluation, our approaches can reduce a CPU load of an LET process compared to a single LET process.","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"8","bibliographic_titles":[{"bibliographic_title":"研究報告システムとLSIの設計技術(SLDM)"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2019-03-10","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"4","bibliographicVolumeNumber":"2019-SLDM-187"}]},"relation_version_is_last":true,"weko_creator_id":"44499"},"id":195140,"links":{}}