{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1362825895459409536.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1016/j.procs.2014.05.052"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S1877050914002294?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S1877050914002294?httpAccept=text/plain"}}],"dc:title":[{"@value":"The K computer Operations: Experiences and Statistics"}],"description":[{"notation":[{"@value":"AbstractThe K computer, released on September 29, 2012, is a large-scale parallel supercomputer system consisting of 82,944 compute nodes. We have been able to resolve a significant number of operation issues since its release. Some system software components have been fixed and improved to obtain higher stability and utilization. We achieved 94% service availability because of a low hardware failure rate and approximately 80% node utilization by careful adjustment of operation parameters. We found that the K computer is an extremely stable and high utilization system."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1382825895459409539","@type":"Researcher","foaf:name":[{"@value":"Keiji Yamamoto"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895459409543","@type":"Researcher","foaf:name":[{"@value":"Atsuya Uno"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895459409546","@type":"Researcher","foaf:name":[{"@value":"Hitoshi Murai"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895459409547","@type":"Researcher","foaf:name":[{"@value":"Toshiyuki Tsukamoto"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895459409537","@type":"Researcher","foaf:name":[{"@value":"Fumiyoshi Shoji"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895459409540","@type":"Researcher","foaf:name":[{"@value":"Shuji Matsui"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895459409541","@type":"Researcher","foaf:name":[{"@value":"Ryuichi Sekizawa"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895459409408","@type":"Researcher","foaf:name":[{"@value":"Fumichika Sueyasu"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895459409548","@type":"Researcher","foaf:name":[{"@value":"Hiroshi Uchiyama"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895459409542","@type":"Researcher","foaf:name":[{"@value":"Mitsuo Okamoto"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895459409549","@type":"Researcher","foaf:name":[{"@value":"Nobuo Ohgushi"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895459409545","@type":"Researcher","foaf:name":[{"@value":"Katsutoshi Takashina"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895459409544","@type":"Researcher","foaf:name":[{"@value":"Daisuke Wakabayashi"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895459409536","@type":"Researcher","foaf:name":[{"@value":"Yuki Taguchi"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895459409538","@type":"Researcher","foaf:name":[{"@value":"Mitsuo 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