{"621880":{"#nid":"621880","#data":{"type":"news","title":"New Techniques May Increase Effective Use of Network Bandwidth ","body":[{"value":"\u003Cp\u003ENew research from Georgia Tech\u0026rsquo;s\u0026nbsp;\u003Ca href=\u0022https:\/\/www.cse.gatech.edu\/\u0022\u003ESchool of Computational Science and Engineering\u003C\/a\u003E\u0026nbsp;(CSE) presents a pioneering method of overlapping communications with communications to more effectively use available network bandwidth.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThe approach allows for actual data transfer in one operation to be overlapped with overheads, or any combination of memory, bandwidth, or other resources required to perform a specific task, in another operation. This method, and its two suggested techniques, are used on a key kernel in electronic structure calculations, and show up to 91.2 percent faster speeds.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026ldquo;Communication-intensive applications that use collective operations like broadcast and reduction are likely to benefit from this method. Our techniques are simple to implement and may give better communication performance to such existing applications by modifying just a few lines of code,\u0026rdquo; said CSE Ph.D. student\u0026nbsp;\u003Cstrong\u003EHua Huang\u003C\/strong\u003E, the primary investigator of the research.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026ldquo;We are planning to study the impact of these techniques on more applications. From a computational science perspective, our results may raise the awareness of MPI library developers and inspire them to design better implementations for some communication operations.\u0026rdquo;\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EHuang and CSE Associate Professor\u0026nbsp;\u003Cstrong\u003EEdmond Chow\u003C\/strong\u003E\u0026nbsp;are presenting a\u0026nbsp;\u003Ca href=\u0022https:\/\/www.cc.gatech.edu\/~echow\/pubs\/huang-chow-ipdps19.pdf\u0022\u003Epaper\u003C\/a\u003E\u0026nbsp;detailing their work this week at the\u0026nbsp;\u003Ca href=\u0022https:\/\/www.cc.gatech.edu\/news\/621726\/faculty-showcase-parallel-computing-research-ipdps-2019\u0022\u003E33\u003Csup\u003Erd\u0026nbsp;\u003C\/sup\u003EIEEE International Parallel and Distributed Processing Symposium\u003C\/a\u003E\u0026nbsp;(IPDPS 2019).\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003E[Related Link:\u0026nbsp;\u003C\/strong\u003E\u003Ca href=\u0022https:\/\/www.cc.gatech.edu\/news\/621726\/college-computing-faculty-showcase-parallel-computing-research-while-leading-conference\u0022\u003E\u003Cstrong\u003ECollege of Computing Faculty Showcase Parallel Computing Research While Leading Conference Programming at IPDPS 2019\u200b\u003C\/strong\u003E\u003C\/a\u003E\u003Cstrong\u003E]\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"CSE Ph.D. student Hua Huang releases new method of overlapping communications with communications to improve network bandwidth."}],"uid":"34540","created_gmt":"2019-05-22 15:12:56","changed_gmt":"2019-05-28 16:51:04","author":"Kristen Perez","boilerplate_text":"","field_publication":"","field_article_url":"","dateline":{"date":"2019-05-22T00:00:00-04:00","iso_date":"2019-05-22T00:00:00-04:00","tz":"America\/New_York"},"extras":[],"hg_media":{"621878":{"id":"621878","type":"image","title":"Overlapping Communications Image","body":null,"created":"1558537393","gmt_created":"2019-05-22 15:03:13","changed":"1558537393","gmt_changed":"2019-05-22 15:03:13","alt":"Overlapped and pipelined communication operations in Algorithm 2 for a 4 \u00d7 4 process mesh and N DU P = 2. Colors denote different blocks of vector y. ","file":{"fid":"236880","name":"figure2.png","image_path":"\/sites\/default\/files\/images\/figure2.png","image_full_path":"http:\/\/tlwarc.hg.gatech.edu\/\/sites\/default\/files\/images\/figure2.png","mime":"image\/png","size":68031,"path_740":"http:\/\/tlwarc.hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/images\/figure2.png?itok=5tRSi2wo"}}},"media_ids":["621878"],"groups":[{"id":"431631","name":"OMS"},{"id":"50877","name":"School of Computational Science and Engineering"},{"id":"47223","name":"College of Computing"}],"categories":[],"keywords":[{"id":"2183","name":"communications"},{"id":"1745","name":"networks"},{"id":"181217","name":"cse-hpc"}],"core_research_areas":[{"id":"39541","name":"Systems"}],"news_room_topics":[],"event_categories":[],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cp\u003EKristen Perez\u003C\/p\u003E\r\n\r\n\u003Cp\u003ECommunications Officer\u003C\/p\u003E\r\n","format":"limited_html"}],"email":["kristen.perez@cc.gatech.edu"],"slides":[],"orientation":[],"userdata":""}}}