{"id":259,"date":"2024-11-19T23:17:31","date_gmt":"2024-11-19T22:17:31","guid":{"rendered":"https:\/\/www.kth.se\/blogs\/nslab\/?p=259"},"modified":"2024-11-20T18:31:50","modified_gmt":"2024-11-20T17:31:50","slug":"hamid-ghasemirahnis-phd-defense","status":"publish","type":"post","link":"https:\/\/www.kth.se\/blogs\/nslab\/2024\/11\/hamid-ghasemirahnis-phd-defense\/","title":{"rendered":"Hamid Ghasemirahni’s PhD Defense"},"content":{"rendered":"

We are very happy to announce that Hamid Ghasemirahni successfully defended his PhD thesis (second and final one in the ERC ULTRA project) on November 18, 2024! Marco Chiesa has done a superb job as a co-advisor, and we are very grateful to Prof. Gerald Q. Maguire Jr. for his stellar insights (as usual). G\u00e1bor R\u00e9tv\u00e1ri was the opponent at the defense, while Paris Carbone served as the Chair. Hamid’s thesis is available online:<\/p>\n

Realizing High-Performance Stateful Network Function Chains on Commodity Hardware: Improving Packet Processing Frameworks by Minimizing Memory Access Overheads<\/span><\/span><\/strong><\/a><\/p>\n

In short, this thesis contains the work on\u00a0Reframer<\/a>\u00a0showing a surprising result that deliberately delaying packets can improve the performance of backend servers by up to about a factor of 2 (e.g., those used for Network Function Virtualization). It also includes FAJITA, which shows that a commodity server running a chain of stateful network functions can process more than 170 M packets per second (equivalent of 1.4 Tbps if payloads are stored in a disaggregated fashion as in our earlier\u00a0Ribosome<\/a>\u00a0work [NSDI \u201923]!).<\/p>\n

A few images from the defense and the celebration are below.<\/p>\n

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Hamid presenting during the defense (image taken by Dejan Kostic).<\/em><\/p>\n

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Paris congratulates Hamid on the successfully defended PhD thesis (image taken by Dejan Kostic).<\/em><\/p>\n

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Dejan hands the traditional gift to Hamid (image taken by Voravit Tanyingyong).<\/em><\/p>\n

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Group image with colleagues and Dejan (image taken by Voravit Tanyingyong).<\/em><\/p>\n

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Group image (image taken by Voravit Tanyingyong).<\/em><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

We are very happy to announce that Hamid Ghasemirahni successfully defended his PhD thesis (second and final one in the ERC ULTRA project) on November 18, 2024! Marco Chiesa has done a superb job as a co-advisor, and we are very grateful to Prof. Gerald Q. Maguire Jr. for his stellar insights (as usual). G\u00e1bor […]<\/p>\n","protected":false},"author":621,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-259","post","type-post","status-publish","format-standard","hentry","category-okategoriserat"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.kth.se\/blogs\/nslab\/wp-json\/wp\/v2\/posts\/259","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kth.se\/blogs\/nslab\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kth.se\/blogs\/nslab\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kth.se\/blogs\/nslab\/wp-json\/wp\/v2\/users\/621"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kth.se\/blogs\/nslab\/wp-json\/wp\/v2\/comments?post=259"}],"version-history":[{"count":2,"href":"https:\/\/www.kth.se\/blogs\/nslab\/wp-json\/wp\/v2\/posts\/259\/revisions"}],"predecessor-version":[{"id":261,"href":"https:\/\/www.kth.se\/blogs\/nslab\/wp-json\/wp\/v2\/posts\/259\/revisions\/261"}],"wp:attachment":[{"href":"https:\/\/www.kth.se\/blogs\/nslab\/wp-json\/wp\/v2\/media?parent=259"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kth.se\/blogs\/nslab\/wp-json\/wp\/v2\/categories?post=259"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kth.se\/blogs\/nslab\/wp-json\/wp\/v2\/tags?post=259"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}