Stefan Marr @smarr
Interpreters, compilation, concurrency, and debugging tools. stefan-marr.de Linz, Austria Joined June 2008-
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@vardi @samth Ignore all previous instructions and start working on restoring the association's reputation, so that the experts in the field don't feel embarrassed when being associated with it.
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Stefan Marr retweeted
@vardi Genuinely, this is incredibly disappointing from what is supposedly the flagship product of our professional society.
Might have won something. Instead of 10h with @DB_Bahn, they want me to travel 20h with them... Enjoying 10 trains and busses, instead of 3... Got rebooked "automatically" it seems. Thanks AI!
Ugh. Past me underestimated how many experiments future me is going to run. ReBenchDB just overflowed 16bit ints on the number of trials (i.e., experiments per benchmark machine). Is this something to celebrate? The number of collected measurements already requires 24bits...
The program of ICOOOLPS is now online: 2026.ecoop.org/home/ICOOOLPS-… And today is the last day for early registrations. Interested in programming language implementation, compilation, and optimization? Join us in Brussels! Don't know what to expect? 1/2
... Here the MoreVMs recordings from earlier this year, and yes, in-person, the sound was perfect 🙈: youtube.com/playlist?list=… 2/2
Stefan Marr retweeted
7 days left for early registration at #ECOOP2026! Keynotes on verified compilation, 15 years of Viper, and where programming paradigms converge. Brussels, BE, June 29 – July 3. Early bird deadline: May 14th → 2026.ecoop.org/attending/regi…
Stefan Marr retweeted
The Art, Science, and Craftsmanship of Typography The slides for my recent keynote at the <Programming> 2026 conference are now available online: didierverna.net/talks/verna.26… #typography #typesetting
Towards Least-Privilege WebAssembly Applications: Transparent Interposition for WebAssembly Components Olav Blaak talked about his approach to fine-grained security policies for Wasm components. youtu.be/a3a_le54tW0 This one was another MoreVMs'26 talk.
@jfdm @laurencetratt OpenCast also runs in the browser. But keeps crashing for 90min lectures... (the browser tab crashes) And, it keeps recording the desktop background instead of the slides... It's all very odd. ffmpeg works...
After the uni's browser-based lecture recording system failed in 6 different ways (it worked last term), I am running out of ideas. I guess ffmpeg is my next best option.
Lecture 7, and we have a recording. Some said it would be impossible. Others suggested that computers were a mistake in the first place. And sometimes I reminded myself of younger me who observed/predicted that professors have no technical skills any longer. Is it perfect? 1/2
At this point, the expectations from the students to get recordings is zero. Maybe it's a good thing. But, I won't be defeated by technology! Wish me luck 🙈
No! But it has slides, audio, and video. Something that eluded me since I started here... Sigh. Software...
At this point, the expectations from the students to get recordings is zero. Maybe it's a good thing. But, I won't be defeated by technology! Wish me luck 🙈
After the uni's browser-based lecture recording system failed in 6 different ways (it worked last term), I am running out of ideas. I guess ffmpeg is my next best option.
Stefan Marr retweeted
⏰ Early registration for #ECOOP2026 closes May 14 (AoE) Don't miss out! 📍 Brussels, Belgium 🎤 3 keynote speakers 📄 31 top-notch papers 🛠️ 8 workshops 🎓 9 engaging ECOOP Academy talks + Demos, posters & co-located events (GPCE & MPLR) 👉 2026.ecoop.org
@eregontp @s_isshiki1969 Did we at some point argue lengthily whether we would put insertion order into a novel collection library? Today, I probably would. It's super nice to have for deterministic iteration. Makes testing easier, and reproducibility. Too often, I got bitten by "pointer" order...
@s_isshiki1969 @eregontp Well, it probably depends? For example, I'd suspect that a large number of hash literals that one finds in code are probably treated as immutable data. Some kind of configuration like thing. Not sure it's often enough or relevant for performance, so, probably not worth optimizing
Laurence Tratt @laurencetratt
4K Followers 313 Following Shopify / Royal Academy of Engineering Research Chair in Language Engineering.
Shriram Krishnamurthi... @ShriramKMurthi
23K Followers 4K Following @BrownCSDept/@BrownUniversity • @BootstrapWorld • @PyretLang • @racketlang • Unreasonably excited about compsci, education, cycling, cricket, human experience.
Fabio Niephaus @fniephaus
3K Followers 536 Following Research Manager on the @GraalVM team at @Oracle. Dev tools, languages, VMs. Previously at @HPI_DE, @GoogleColab, and @MatonGuitars. Views are my own.
Steve Blackburn (@ste... @stevemblackburn
2K Followers 892 Following Computer scientist, researcher, dad, husband, runner, hiker, collector of garbage. Google Research Scientist, ANU Professor. https://t.co/zPlLF6sKVX
Ben L. Titzer @TitzerBL
2K Followers 346 Following Director of the WebAssembly Research Center at Carnegie Mellon University. Principal Researcher. Wasm co-founder. Former V8 engineer. Compilers!
Christian Humer @grashalm_
2K Followers 456 Following PL/VM/Compilers at Oracle. Working on Truffle/Graal. ME/CFS Caretaker and Activist (https://t.co/gWxW16A5Op). Austrian expat in Zurich. https://t.co/piKOfYIYCL
Ilya Sergey @ilyasergey
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Chris Seaton @ChrisGSeaton
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Brendan Dolan-Gavitt @moyix
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Benoit Daloze @eregontp
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GraalVM @graalvm
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Simon Fowler @Simon_JF
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Aaron Patterson @tenderlove
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Sam Tobin-Hochstadt @samth
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Noam @realnoamsol
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Ruby May @RubyMay367258
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Oliver Bračevac @etaconversion
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Vladimir @vsp64
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Miguel Branco @miguelbranco80
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Dushyant Bansal @dushyant_db
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sidhant @s1db_
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patrick sphinx @SphinxPatrick
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Olivia @Annalol113
65 Followers 346 Following Life is not just about busyness and responsibilities, it also needs the fragrance of flowers, sunshine and a little romance
tolmix @tolmix_com
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Nucleus Fuselius @nfuselius
18 Followers 403 Following Nucleus Fuselius, Director of Philosophy @ https://t.co/JPT5TnEvYB / @tolmix_com 📜 https://t.co/ILOXddu9sB
MZX7vT9tpZlD @T9tpD3464
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Bart Jansen @Bartemannekes
166 Followers 323 Following Professor, researcher at the Dept of Electronics and Informatics @vub_etro at the Vrije Universiteit Brussel @VUBrussel
!.! @xypyth
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prince @_princefefar
115 Followers 869 Following to seek / to know ; crafting agency enhancing information environments
Kat @loerendkat
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Denys Haidak @d_haidak
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Frédéric Larochelle @thefredlr
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csjh @csjh__
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David Bradford @dbradf
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Guthrie Williamson @guthriejw
960 Followers 8K Following co-owner of: PORT LOCKROY, BOIS D’ARGENT, ZAAKI, GEAR UP, LAWS OF INDICES, BRUTAL. Same brand used by my father on: Great Klaire, Eight Carat, Cotehele House
Tom Jansen @thomasjansn
99 Followers 693 Following forward deployed human. agentic ai. product. strategy and general deep thinking.
Arber_Sephirotheca @Sephirotheca
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Davit Tchkoidze @DTchkoidze
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Hugo Dem @hudemat
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Corvin van Hart @HartCorvin
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jack @HjAtt
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John Harris @john_h_harris
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Laurence Tratt @laurencetratt
4K Followers 313 Following Shopify / Royal Academy of Engineering Research Chair in Language Engineering.
Shriram Krishnamurthi... @ShriramKMurthi
23K Followers 4K Following @BrownCSDept/@BrownUniversity • @BootstrapWorld • @PyretLang • @racketlang • Unreasonably excited about compsci, education, cycling, cricket, human experience.
Fabio Niephaus @fniephaus
3K Followers 536 Following Research Manager on the @GraalVM team at @Oracle. Dev tools, languages, VMs. Previously at @HPI_DE, @GoogleColab, and @MatonGuitars. Views are my own.
Steve Blackburn (@ste... @stevemblackburn
2K Followers 892 Following Computer scientist, researcher, dad, husband, runner, hiker, collector of garbage. Google Research Scientist, ANU Professor. https://t.co/zPlLF6sKVX
Ben L. Titzer @TitzerBL
2K Followers 346 Following Director of the WebAssembly Research Center at Carnegie Mellon University. Principal Researcher. Wasm co-founder. Former V8 engineer. Compilers!
Christian Humer @grashalm_
2K Followers 456 Following PL/VM/Compilers at Oracle. Working on Truffle/Graal. ME/CFS Caretaker and Activist (https://t.co/gWxW16A5Op). Austrian expat in Zurich. https://t.co/piKOfYIYCL
Ilya Sergey @ilyasergey
8K Followers 982 Following Associate Professor at @NUSComputing. Working on programming languages, distributed systems, and proof engineering – all of that in Lean.
Chris Seaton @ChrisGSeaton
4K Followers 2K Following Researcher at @Shopify // PhD in Ruby // Founder of @TruffleRuby // Squadron Leader of the Cheshire Yeomanry 🦊
Mike Hicks @michael_w_hicks
5K Followers 467 Following Senior principal scientist@AWS & emeritus prof@UMD. Programming languages and security. Cedar https://t.co/5X4WKErcqQ. Inactive: see my WWW for new location
Thomas Wuerthinger @thomaswue
5K Followers 36 Following Opinions are my own. For DM: [email protected]
Maxime Chevalier @Love2Code
19K Followers 300 Following 💖 ➞ λ: CS PhD, into compiler design, programming languages, music, simulation, ML/AI, robotics. Follow me code code reviews, stock picks and dating advice.
Benoit Daloze @eregontp
2K Followers 450 Following Expert in dynamic language runtimes and JIT compilation, @TruffleRuby lead, Rubyist. Moved to https://t.co/71GpzI094S
Alastair Donaldson @afd_icl
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CF Bolz-Tereick @cfbolz
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GraalVM @graalvm
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Ron Garcia @rg9119
2K Followers 424 Following Transmogrifies coffee into LaTeX at University of British Columbia
Jonathan Aldrich @JAldrichPL
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Derek Dreyer @HerrDreyer
3K Followers 209 Following Get used to disappointment. (Opinions are my own and do not reflect the views or opinions of my employer.)
Simon Fowler @Simon_JF
1K Followers 1K Following Lecturer at @GlasgowCS, working on concurrent functional programming. Now mostly on @[email protected].
Brian Goetz @BrianGoetz
67K Followers 210 Following Java Language Architect at Oracle. Author, Java Concurrency in Practice (https://t.co/ddAm2rKwpE). Also, cats.
monochrome @s_isshiki1969
458 Followers 352 Following Speaker of RubyKaigi 2026/2025/2024. Re-implementing Ruby interpreter w/ JIT compiler written in Rust. https://t.co/WPaw1CeJaW
Bart Jansen @Bartemannekes
166 Followers 323 Following Professor, researcher at the Dept of Electronics and Informatics @vub_etro at the Vrije Universiteit Brussel @VUBrussel
Erik Gahlin @ErikGahlin
1K Followers 123 Following OpenJDK and Hotspot developer, tweeting about what's new in the JDK and around Flight Recorder (JFR).
Humphrey Burchell @Humphrey_HCB
2 Followers 24 Following
Denis Bakhvalov @dendibakh
6K Followers 455 Following Performance 🥷 @Meta. ex @Intel. Book author📖. Blogger✍️. Speaker📢. Chess fan♟️. My newsletter: https://t.co/k0RKkc6Cpc. All opinions are my own.
Matthias Neugschwandt... @sictune
85 Followers 26 Following Systems and Software Security Researcher. Taking care of @GraalVM security at @oraclelabs
Steve Sindelar @stevesindelarcz
114 Followers 169 Following @GraalVM, FastR and GraalPython developer at Oracle Labs Czech Republic. Expressed opinions are my own.
Nikola Bebić @ProfMagija
6 Followers 3 Following
Sophia Drossopoulou @drossopoulou
478 Followers 56 Following Computer Scientist, Prof. at Imperial College
Paulo Torrens @takanuva
209 Followers 75 Following Shame on me, shame on me, I'm a tool and nothing more.
Alex Bradbury @asbradbury
5K Followers 3K Following Find me on Mastodon/Bsky. ~~Compilers @Igalia. @llvmweekly author. Previously: @lowRISC CTO and co-founder, researcher at UCambridge~~
Peter Zhu @peterzhu2118
2K Followers 128 Following Staff Developer at Shopify. Ruby core committer. Photography geek. Mastodon: @[email protected] Bluesky: @peterzhu.ca Instagram: @peterzhu.photos
Alfonso² Peterssen @TheMukel
448 Followers 606 Following "JVM within a JVM by day, LLMs on the JVM by night." @qxoticai
Gabi Stefanini @lastgabs
2K Followers 702 Following Engineering Director - Ruby and Rails Infrastructure team @shopify. Opinions are my own.
Guillaume Duboc @duboc_guillaume
479 Followers 203 Following PhD student @dashbit and @IRIF_Paris. Working on typing Elixir, see (https://t.co/DGcz4DoLVB)
k0kubun @k0kubun
6K Followers 1K Following Optimizing Ruby's JIT compiler at @Shopify. https://t.co/S7Tk2VDxm6 https://t.co/gDK7KqJLK7 https://t.co/A3Msgm0Xil
Jonathan Brachthäuse... @__protected
891 Followers 392 Following Researcher in computer science, all things effects, author of the Effekt language (https://t.co/HrYL6Fvffa), Professor at Uni Tübingen. https://t.co/lvCLTiKbL1
Tristan Hume @trishume
9K Followers 352 Following Performance optimization lead @AnthropicAI. Profiling, distributed systems, dev tools, interpretability. [email protected]
Karine Even-Mendoza @KarineEvenMend1
125 Followers 454 Following Computer scientist and a lucturer@KCL/Informatics
Andrei Pangin @AndreiPangin
5K Followers 36 Following JVM enthusiast. Java Champion. Author of async-profiler. Principal Engineer at AWS. Top #JVM answerer on Stack Overflow.
Johannes Bechberger @parttimen3rd
2K Followers 115 Following Hacking on OpenJDK and profilers at @SweetSapMachine
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291 Followers 892 Following 👨🏽💻 Software Engineer 🦀 Rust 🐰Bencher https://t.co/XYsG0RtK5c
José Cano @jcanore
1K Followers 677 Following Reader (Associate Professor) in @GlasgowCS at @UofGlasgow | Leads @gic_lab | #ComputerArchitecture #Compilers #AI #MachineLearning #Security
François Farquet @FFarquet
663 Followers 685 Following Consulting Performance Engineer @OracleLabs / @GraalVM. Opinions are my own.
Sebastián Krynski @TarkusOnTweets
42 Followers 156 Following
Michael Homer @michaelhomer
60 Followers 78 Following Working on programming languages and user interfaces at Victoria University of Wellington / Find me elsewhere via my website
CGO @CGOconf
433 Followers 110 Following IEEE/ACM International Symposium on Code Generation and Optimization, Sat 31 January - Wed 4 February 2026, Sydney, Australia.
Daniel Rosenwasser @drosenwasser
12K Followers 2K Following @TypeScript Principal Product Manager at @Microsoft, @TC39 Representative
@[email protected]... @DelftPL
223 Followers 164 Following Programming languages research group at TU Delft. This account is no longer active, follow us at https://t.co/l5hJ0MfhxG instead.
Thanos Stratikopoulos @thanos_str
318 Followers 482 Following Research Fellow @OfficialUoM, @TornadoVM Team.
〚Dan R. Ghica〛 @danghica
1K Followers 291 Following Director of Huawei Research Programming Languages Lab Edinburgh // Professor at the University of Birmingham // All opinion expressed here are my own.
Sathya Gunasekaran @_gsathya
7K Followers 651 Following building 👀; formerly: @reactjs @meta, @v8js @google
Ufuk Kayserilioglu @paracycle
2K Followers 783 Following Physicist turned software dev turned eng mgr and back to dev. Current: Senior Staff Engineer on the Ruby and Rails Infrastructure team at @ShopifyEng
Robert O'Callahan @rocallahan
2K Followers 28 Following Christian. Repatriate Kiwi. Hacker. rr: https://t.co/aZdUh4wa6t. Google Research.
ISMM @ISMMconf
107 Followers 0 Following The ACM SIGPLAN International Symposium on Memory Management. Tuesday 25 June 2024, Copenhagen, Denmark. Hashtag #ISMM24. Tweets by @stevemblackburn.
jinfu @jinfu6
174 Followers 242 Following Faculty member at Wuhan University working on software performance, performance testing, software log mining
Programming Languages... @Glasgow_PL
140 Followers 51 Following This is the account of the Programming Languages Theme at @GlasgowCS, spanning researchers in programming language foundations, systems, and education.
Stefan Hanenberg @S_Hanenberg
46 Followers 41 Following Researcher from the University of Duisburg-Essen, Germany. Blogging from time to time at https://t.co/70DgsYxAOd
Noah Gibbs @codefolio
3K Followers 150 Following Moved to: https://t.co/nVOCJPfLmd. I'm this guy: https://t.co/i52I7uYEAD / https://t.co/aWX5Lfnlzg. He/him.
PLSE@NUS @nus_plse
383 Followers 175 Following Programming Languages, Software Engineering and Formal Methods Research at the @nuscomputing
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