{"52457":{"#nid":"52457","#data":{"type":"event","title":"CSE Seminar: Jason Riedy","body":[{"value":"\u003Cp class=\u0022MsoPlainText\u0022\u003EJason Riedy\u003Cbr \/\u003EResearch Scientist II, Georgia Tech, Computational Science and Engineering Division\u003Cbr \/\u003E\u003C\/p\u003E\n\u003Cp\u003EFor more information please contact Dr. David Bader at \u003Ca href=\u0022bader@cc.gatech.edu\u0022\u003Ebader@cc.gatech.edu\u003C\/a\u003E\u003C\/p\u003E\n\u003Cp\u003E\u003C\/p\u003E\n\u003Cp\u003E\u0022Dependable direct solutions for linear systems using a little extra precision\u0022\u003C\/p\u003E\n\u003Cp class=\u0022MsoPlainText\u0022\u003EAbstract:\u00a0 \u003C\/p\u003E\n\u003Cp class=\u0022MsoPlainText\u0022\u003ESolving a square linear system Ax=b often is considered a black box.\u003C\/p\u003E\n\u003Cp class=\u0022MsoPlainText\u0022\u003EIt\u0027s supposed to \u0022just work,\u0022 and failures often are blamed on the original data or subtleties of floating-point.\u00a0 Now that we have an abundance of cheap computations, however, we can do much better.\u00a0 A little extra precision in just the right places produces accurate solutions cheaply or demonstrates when problems are too hard to solve without significant cost.\u003C\/p\u003E\n\u003Cp class=\u0022MsoPlainText\u0022\u003EThis talk will outline the method, iterative refinement with a new twist; the benefits, small backward and forward errors; and the trade-offs and unexpected benefits.\u003Cbr \/\u003E\u003C\/p\u003E\n\u003Cp class=\u0022MsoPlainText\u0022\u003EBio:\u003C\/p\u003E\n\u003Cp class=\u0022MsoPlainText\u0022\u003EJason Riedy is a recent Research Scientist working on the CASS-MT project here at Georgia Tech.\u00a0 He is in the final throes of submitting his thesis at UC Berkeley, \u0022Making Static Pivoting Scalable and Dependable.\u0022\u00a0 His background is in numerical linear algebra, floating-point arithmetic, and combinatorial scientific computing.\u00a0 He is an LAPACK developer, has participated in the IEEE-754 standard revision, and has contributed to many free software packages. \u003C\/p\u003E\n\u003Cp class=\u0022MsoPlainText\u0022\u003E~~~~~~~~~~~~~~~~~~~~~~~~~\u003C\/p\u003E\n\u003Cp class=\u0022MsoPlainText\u0022\u003EYou are cordially invited to attend a reception that will follow the seminar to chat informally with faculty and students. Refreshments will be provided.\u003C\/p\u003E\n\u003Cp class=\u0022MsoPlainText\u0022\u003ETo receive future announcements, please sign up to the cse-seminar email list:\u003C\/p\u003E\n\u003Cp class=\u0022MsoPlainText\u0022\u003E\u003Ca title=\u0022https:\/\/mailman.cc.gatech.edu\/mailman\/listinfo\/cse-seminar\u0022 href=\u0022https:\/\/mailman.cc.gatech.edu\/mailman\/listinfo\/cse-seminar\u0022 target=\u0022_blank\u0022\u003Ehttps:\/\/mailman.cc.gatech.edu\/mailman\/listinfo\/cse-seminar\u003C\/a\u003E\u003C\/p\u003E\n\u003Cp\u003E\u003C\/p\u003E\n\u003Cp\u003E\u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":"","uid":"27154","created_gmt":"2010-02-11 15:51:43","changed_gmt":"2016-10-08 01:49:46","author":"Louise Russo","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2009-08-21T15:00:00-04:00","event_time_end":"2009-08-21T16:00:00-04:00","event_time_end_last":"2009-08-21T16:00:00-04:00","gmt_time_start":"2009-08-21 19:00:00","gmt_time_end":"2009-08-21 20:00:00","gmt_time_end_last":"2009-08-21 20:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"47223","name":"College of Computing"}],"categories":[],"keywords":[],"core_research_areas":[],"news_room_topics":[],"event_categories":[],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"Lometa Mitchell","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}