{"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00214020","sets":["1164:2036:10484:10753"]},"path":["10753"],"owner":"44499","recid":"214020","title":["ループ平坦化におけるループ回数の2のべき乗化による回路最適化"],"pubdate":{"attribute_name":"公開日","attribute_value":"2021-11-24"},"_buckets":{"deposit":"2ff8e7b8-0d65-48c5-a5b0-eb0d75d3e106"},"_deposit":{"id":"214020","pid":{"type":"depid","value":"214020","revision_id":0},"owners":[44499],"status":"published","created_by":44499},"item_title":"ループ平坦化におけるループ回数の2のべき乗化による回路最適化","author_link":["548292","548291"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"ループ平坦化におけるループ回数の2のべき乗化による回路最適化"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"設計技術","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2021-11-24","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東京都市大学工学研究科"},{"subitem_text_value":"東京都市大学工学研究科"}]},"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/214020/files/IPSJ-SLDM21196011.pdf","label":"IPSJ-SLDM21196011.pdf"},"date":[{"dateType":"Available","dateValue":"2023-11-24"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-SLDM21196011.pdf","filesize":[{"value":"1.3 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":"e2363f72-81aa-4471-a0f0-de47fb2f1ffd","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2021 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"伊澤, 昇平"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"瀬戸, 謙修"}],"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":"自動運転用 LSI など高性能なハードウェアは設計期間が増加する問題があり，設計期間の短縮が求められている．そこで，C 言語からハードウェアを自動生成する高位合成が注目されている．現在の高位合成技術では，高性能なハードウェアを設計するために，ソースコード最適化が必要である．コード最適化の 1 つであるループ平坦化は，多重ループを単一ループにする最適化であり，ループ処理の実行時間を短縮できる．しかし，既存のループ平坦化では，元々のループ変数を復元する処理に除算や剰余算が使用されるため，回路面積と消費電力が増加する問題点がある．本論文では，この問題に対処するため，多重ループの内側ループの反復回数を 2 のべき乗に変更することでループ変数復元処理を簡略化する手法を提案する．実験の結果，最適化前と比べ，平均で，サイクル数，総実行時間，消費エネルギーをそれぞれ 8%，20%，12% 削減し，回路面積は 4%，消費電力は 9% 増加した．3 つの例題において，既存のループ平坦化と比較した結果，提案手法は同じサイクル数削減率を達成し，平均で，総実行時間を 18%，回路面積を 31%，消費電力を 64%，消費エネルギーを 84% 削減することができた．よって本論文の提案手法は，高位合成向けループ平坦化手法の 1 つとして有効であることが分かった．","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"6","bibliographic_titles":[{"bibliographic_title":"研究報告システムとLSIの設計技術（SLDM）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2021-11-24","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"11","bibliographicVolumeNumber":"2021-SLDM-196"}]},"relation_version_is_last":true,"weko_creator_id":"44499"},"id":214020,"updated":"2025-01-19T16:55:59.419621+00:00","links":{},"created":"2025-01-19T01:14:51.484657+00:00"}