{"id":183064,"date":"2007-03-15T00:00:00","date_gmt":"2009-10-31T10:16:54","guid":{"rendered":"https:\/\/www.microsoft.com\/en-us\/research\/msr-research-item\/looking-beyond-performance-processors-for-time-travel\/"},"modified":"2016-09-09T09:47:19","modified_gmt":"2016-09-09T16:47:19","slug":"looking-beyond-performance-processors-for-time-travel","status":"publish","type":"msr-video","link":"https:\/\/www.microsoft.com\/en-us\/research\/video\/looking-beyond-performance-processors-for-time-travel\/","title":{"rendered":"Looking Beyond Performance: Processors for Time Travel"},"content":{"rendered":"<div class=\"asset-content\">\n<p>The processor industry is at an inflection point. In the past, performance was the driving force behind the processor industry. But in the coming many-core era, improving programmability and reliability of the system will be at least as important as improving raw performance.  To meet this vision, I will present a processor feature called BugNet that assists programmers in understanding software failures.<\/p>\n<p>Reproducing software failures is a significant challenge. The problem is severe especially for multi-threaded programs because the causes of failure can be non-deterministic in nature. BugNet continuously logs a program&#8217;s execution while sacrificing verylittle performance (~1%).  If the program crashes, the developer can use the log to debug the failure by time traveling to a past instant in failed program&#8217;s execution time. I will also talk about two software tools built using the BugNet logging mechanism.  One is a data race analysis tool, which is currently used at Microsoft.  Another is a tool that enabled Intel to easily port their ASIM architectural simulator to Mac OSX, whichwas never attempted before because of the effort involved.<\/p>\n<\/div>\n<p><!-- .asset-content --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The processor industry is at an inflection point. In the past, performance was the driving force behind the processor industry. But in the coming many-core era, improving programmability and reliability of the system will be at least as important as improving raw performance. To meet this vision, I will present a processor feature called BugNet [&hellip;]<\/p>\n","protected":false},"featured_media":194880,"template":"","meta":{"msr-url-field":"","msr-podcast-episode":"","msrModifiedDate":"","msrModifiedDateEnabled":false,"ep_exclude_from_search":false,"_classifai_error":"","msr_hide_image_in_river":0,"footnotes":""},"research-area":[],"msr-video-type":[],"msr-locale":[268875],"msr-post-option":[],"msr-session-type":[],"msr-impact-theme":[],"msr-pillar":[],"msr-episode":[],"msr-research-theme":[],"class_list":["post-183064","msr-video","type-msr-video","status-publish","has-post-thumbnail","hentry","msr-locale-en_us"],"msr_download_urls":"","msr_external_url":"https:\/\/youtu.be\/DBUeplpgPlA","msr_secondary_video_url":"","msr_video_file":"","_links":{"self":[{"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-video\/183064","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-video"}],"about":[{"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/types\/msr-video"}],"version-history":[{"count":0,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-video\/183064\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/media\/194880"}],"wp:attachment":[{"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/media?parent=183064"}],"wp:term":[{"taxonomy":"msr-research-area","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/research-area?post=183064"},{"taxonomy":"msr-video-type","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-video-type?post=183064"},{"taxonomy":"msr-locale","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-locale?post=183064"},{"taxonomy":"msr-post-option","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-post-option?post=183064"},{"taxonomy":"msr-session-type","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-session-type?post=183064"},{"taxonomy":"msr-impact-theme","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-impact-theme?post=183064"},{"taxonomy":"msr-pillar","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-pillar?post=183064"},{"taxonomy":"msr-episode","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-episode?post=183064"},{"taxonomy":"msr-research-theme","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-research-theme?post=183064"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}