{"_buckets": {"deposit": "de60f270-5f2d-41c3-a6b4-3f6d8b3ff403"}, "_deposit": {"created_by": 3, "id": "288", "owners": [3], "pid": {"revision_id": 0, "type": "depid", "value": "288"}, "status": "published"}, "_oai": {"id": "oai:uec.repo.nii.ac.jp:00000288", "sets": ["6"]}, "author_link": ["6416", "6414", "6415", "6413"], "item_10001_biblio_info_7": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2011-12-01", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "12", "bibliographicPageEnd": "2327", "bibliographicPageStart": "2319", "bibliographicVolumeNumber": "E94-D", "bibliographic_titles": [{"bibliographic_title": "IEICE Transactions on Information and Systems"}]}]}, "item_10001_description_4": {"attribute_name": "著者ID", "attribute_value_mlt": [{"subitem_description": "1000050422407", "subitem_description_type": "Other"}, {"subitem_description": "1000060210738", "subitem_description_type": "Other"}]}, "item_10001_description_6": {"attribute_name": "内容記述", "attribute_value_mlt": [{"subitem_description": "In this paper, we propose an approach to obtaining en-hanced performance of the Linpack benchmark on a GPU-accelerated PCcluster connected via relatively slow inter-node connections. For one nodewith a quad-core Intel Xeon W3520 processor and a NVIDIA Tesla C1060GPU card, we implement a CPU-GPU parallel double-precision generalmatrix－matirx multiplication (dgemm) operation, and achieve a perfor-mance improvement of 34% compared with the GPU-only case and 64%compared with the CPU-only case. For an entire 16-node cluster, each nodeof which is the same as the above and is connected with two gigabit Ether-net links, we use a computation-communication overlap scheme with GPUacceleration for the Linpack benchmark, and achieve a performance im-provement of 28% compared with the GPU-accelerated high-performanceLinpack benchmark (HPL) without overlapping. Our overlap GPU accel-eration solution uses overlaps in which the main inter-node communicationand data transfer to the GPU device memory are overlapped with the maincomputation task on the CPU cores. These overlaps use multi-core pro-cessors, which almost all of today’s high-performance computers use. Inparticular, as well as using a CPU core for communication tasks, we alsosimultaneously use other CPU cores and the GPU for computation tasks.In order to enable overlap between inter-node communication and com-putation tasks, we eliminate their close dependence by breaking the maincomputation task into smaller tasks and rescheduling. Based on a scheme inwhich part of the CPU computation power is simultaneously used for tasksother than computation tasks, we experimentally find the optimal compu-tation ratio for CPUs; this ratio differs from the case of parallel dgemmoperation of one node.", "subitem_description_type": "Other"}]}, "item_10001_publisher_8": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "The Institute of Electronics, Information and Comunication Engineers"}]}, "item_10001_relation_17": {"attribute_name": "関連サイト", "attribute_value_mlt": [{"subitem_relation_name": [{"subitem_relation_name_text": "http://www.ieice.org/jpn/index.html"}], "subitem_relation_type_id": {"subitem_relation_type_id_text": "http://www.ieice.org/jpn/index.html", "subitem_relation_type_select": "URI"}}]}, "item_10001_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "09168532 ", "subitem_source_identifier_type": "ISSN"}]}, "item_10001_text_24": {"attribute_name": "自由記述ライセンス", "attribute_value_mlt": [{"subitem_text_value": "Copyright c 2011 The Institute of Electronics, Information and Communication Engineers"}]}, "item_10001_version_type_20": {"attribute_name": "著者版フラグ", "attribute_value_mlt": [{"subitem_version_resource": "http://purl.org/coar/version/c_970fb48d4fbd8a85", "subitem_version_type": "VoR"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Junichi, Ohmura", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "6413", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Takefumi, Miyoshi", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "6414", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Hidetsugu, Irie", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "6415", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Tsutomu, Yoshinaga", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "6416", "nameIdentifierScheme": "WEKO"}]}]}, "item_files": {"attribute_name": "ファイル情報", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2016-09-15"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "9000000554.pdf", "filesize": [{"value": "652.4 kB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_free", "mimetype": "application/pdf", "size": 652400.0, "url": {"label": "9000000554.pdf", "url": "https://uec.repo.nii.ac.jp/record/288/files/9000000554.pdf"}, "version_id": "ed97d760-5f32-408a-a7b1-02ffde2301c2"}]}, "item_keyword": {"attribute_name": "キーワード", "attribute_value_mlt": [{"subitem_subject": "parallel processing, multi-core processor, GPU, computation-communication overlap", "subitem_subject_language": "en", "subitem_subject_scheme": "Other"}]}, "item_language": {"attribute_name": "言語", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_resource_type": {"attribute_name": "資源タイプ", "attribute_value_mlt": [{"resourcetype": "journal article", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "Computation-Communication Overlap of Linpack on a GPU-Accelerated PC Cluster", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Computation-Communication Overlap of Linpack on a GPU-Accelerated PC Cluster", "subitem_title_language": "en"}]}, "item_type_id": "10001", "owner": "3", "path": ["6"], "permalink_uri": "https://uec.repo.nii.ac.jp/records/288", "pubdate": {"attribute_name": "公開日", "attribute_value": "2011-12-01"}, "publish_date": "2011-12-01", "publish_status": "0", "recid": "288", "relation": {}, "relation_version_is_last": true, "title": ["Computation-Communication Overlap of Linpack on a GPU-Accelerated PC Cluster"], "weko_shared_id": 3}