{"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00182788","sets":["1164:2240:9116:9216"]},"path":["9216"],"owner":"11","recid":"182788","title":["「京」におけるジョブI/OによるローカルMDS負荷の分析"],"pubdate":{"attribute_name":"公開日","attribute_value":"2017-07-19"},"_buckets":{"deposit":"e76d9378-6473-458f-9712-bfff173b26df"},"_deposit":{"id":"182788","pid":{"type":"depid","value":"182788","revision_id":0},"owners":[11],"status":"published","created_by":11},"item_title":"「京」におけるジョブI/OによるローカルMDS負荷の分析","author_link":["399112","399115","399114","399116","399117","399118","399113","399111"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"「京」におけるジョブI/OによるローカルMDS負荷の分析"},{"subitem_title":"Analysis of the Load of Local Meta Data Server Access from the Job I/O on the K computer","subitem_title_language":"en"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"ストレージ","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2017-07-19","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"理化学研究所"},{"subitem_text_value":"富士通株式会社"},{"subitem_text_value":"富士通株式会社"},{"subitem_text_value":"理化学研究所"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"RIKEN","subitem_text_language":"en"},{"subitem_text_value":"FUJITSU, LTD.","subitem_text_language":"en"},{"subitem_text_value":"FUJITSU, LTD.","subitem_text_language":"en"},{"subitem_text_value":"RIKEN","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/182788/files/IPSJ-HPC17160027.pdf","label":"IPSJ-HPC17160027.pdf"},"date":[{"dateType":"Available","dateValue":"2019-07-19"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-HPC17160027.pdf","filesize":[{"value":"1.8 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Kuroda","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Shunsuke, Inoue","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Ryuichi, Sekizawa","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kazuo, Minami","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":"近年 HPC システムの運用の現場で，様々な問題が報告されている．ジョブ実行時間の変動の問題は，要因が複雑に絡まり，原因の究明や解決が難しい問題の一つである．変動が大きいものの中には，ジョブが予定時間内に終了しない事例もあり，解析により，分散ファイルシステムでの I / O によるメタデータサーバ (MDS) の負荷が，性能限界まで達している事例があることが分かった．本報では，ノード単位で蓄積されている MDS 処理命令数のカウンタ情報を集約し，ジョブとの関係を解析するためのシステムを構築したので，その概要並びに解析事例を紹介する．本解析により，MDS 負荷が高いジョブの影響で，他のジョブが想定時間内に終了しない事例が見つかった．また小規模な並列数のジョブでも MDS 負荷が高いものがあることが分かった．MDS 負荷が高い状態では I / O 処理の一部が滞るため，過負荷状態の対策を行うことは，計算資源の無駄な消費の削減につながる．","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":"2017-07-19","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"27","bibliographicVolumeNumber":"2017-HPC-160"}]},"relation_version_is_last":true,"weko_creator_id":"11"},"id":182788,"updated":"2025-01-20T03:57:01.978898+00:00","links":{},"created":"2025-01-19T00:50:21.984089+00:00"}