{"created":"2025-01-19T00:56:39.360845+00:00","updated":"2025-01-20T01:05:55.722699+00:00","metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00190703","sets":["1164:1579:9341:9527"]},"path":["9527"],"owner":"11","recid":"190703","title":["水没による計算機超高密度実装の検討"],"pubdate":{"attribute_name":"公開日","attribute_value":"2018-07-23"},"_buckets":{"deposit":"d8553363-426c-4fed-8135-4d12b4e1cd0b"},"_deposit":{"id":"190703","pid":{"type":"depid","value":"190703","revision_id":0},"owners":[11],"status":"published","created_by":11},"item_title":"水没による計算機超高密度実装の検討","author_link":["437209","437206","437208","437213","437210","437211","437207","437212"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"水没による計算機超高密度実装の検討"},{"subitem_title":"A Consideration of Super-high-density In-water Computers Implementation","subitem_title_language":"en"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"省電力・冷却","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2018-07-23","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"国立情報学研究所"},{"subitem_text_value":"慶應義塾大学"},{"subitem_text_value":"情報通信研究機構"},{"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":"National Institute of Informatics","subitem_text_language":"en"},{"subitem_text_value":"Keio University","subitem_text_language":"en"},{"subitem_text_value":"National Institute of Information and Communications Technology","subitem_text_language":"en"},{"subitem_text_value":"National Institute of Informatics","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/190703/files/IPSJ-ARC18232021.pdf","label":"IPSJ-ARC18232021.pdf"},"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-ARC18232021.pdf","filesize":[{"value":"601.7 kB"}],"mimetype":"application/pdf","priceinfo":[{"tax":["include_tax"],"price":"0","billingrole":"16"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_login","version_id":"64bcf781-0a9c-4516-8b1a-f1e84912fa07","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2018 by the Institute of Electronics, Information and Communication Engineers This SIG report is only available to those in membership of the SIG."}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"平澤, 将一"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"十時, 知滉"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"藤原, 一毅"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"鯉渕, 道紘"}],"nameIdentifiers":[{}]}]},"item_4_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Shoichi, Hirasawa","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Tomohiro, Totoki","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Ikki, Fujiwara","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Michihiro, Koibuchi","creatorNameLang":"en"}],"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":"ラック当たり 80 kW を超えるような計算機の超高密度実装は，設置コストの低減および超高バンド幅低遅延通信に有効であるが，既存の空冷システムや液冷システムでは冷却能力が不足することによる実現性の問題が存在する．そこでわれわれは，水の中に計算機全体を水没させる冷却技術を応用することにより，ラック当たり 80 kW を超えるような計算機の超高密度実装の実現性について検討する．具体的には，相変化時の高い蒸発熱を利用して計算機を一定温度に保持する冷却技術を提案し，さらに，発生した蒸気を利用して発電を行う水没発電について検討を行った．サーバの冷却に使用した水から発生した低温蒸気を発電に使用した場合の冷却効率を，実在するスクリュ式蒸気発電機をもとに評価を行った結果，140 ℃ の高温動作可能なサーバボードを仮定すれば PUE (Power Usage Effectiveness) 0.933，さらに 160 ℃ の高温動作可能なサーバボードを仮定すれば PUE 0.925 を達成できることを示した．","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・アーキテクチャ（ARC）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2018-07-23","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"21","bibliographicVolumeNumber":"2018-ARC-232"}]},"relation_version_is_last":true,"weko_creator_id":"11"},"id":190703,"links":{}}