Today at #ase2025: “The fault in our stats”, or how the majority of notebooks fails to check even the most basic statistical assumptions

We are thrilled to announce that our NEW Large Language Model will be released on 11.18.25.

The Virgil compiler interprets its SSA representation directly, as compile-time initialization allows the full language--a simplification after two generations of customized interpreters. It does basically what Mike wrote, except gotos assign the values of phis instead of looking them up.

LuaJIT 3 might interpret an SSA-based program representation (possibly with a more optimized interpreter for platforms without JIT compilation) www.freelists.org/post/luajit/...

MPLR'26 will be in Brussels! The deadline is sooner than usually, March 6th. Please get your papers ready early! MPLR is interested in all things VMs, Language Implementation, Compilers, Interpreters, and Tooling! 2026.ecoop.org/home/mplr-20... They'll colocate again with ECOOP and ICOOOLPS!

MPLR'26 will be in Brussels! The deadline is sooner than usually, March 6th. Please get your papers ready early! MPLR is interested in all things VMs, Language Implementation, Compilers, Interpreters, and Tooling! 2026.ecoop.org/home/mplr-20... They'll colocate again with ECOOP and ICOOOLPS!

Somewhat delayed because of Covid, I'm finally going to give my "inaugural lecture", which is a short, hopefully accessible, public talk: in my case "Some things I've learned about software"! All are welcome!

Could you be our next Head of School? We're seeking an innovative, forward-thinking leader to join us in this academic leadership role, accountable for providing a coherent academic vision and direction for the School. Apply by 30 November: www.jobs.gla.ac.uk/job/professo...

Just told my course staff that variable-length arrays have been part of C since “the late 1900s”.

Four lectures in, not a single one recorded properly. I truly reached the professorial level, and started conforming to the stereotype... I used to joke that professors lose their practical skills. Now, I am living it. 🤦🏻‍♂️

To teach the Deutsch-Schorr-Waite pointer reversal GC marking algorithm or not...

Last week I presented at #MPLR2025 our work on #TornadoInsight - an #opensource tool for static & dynamic analysis of #Java code using #TornadoVM on #GPUs. The presentation is on YouTube: 🎥 Talk: youtube.com/live/sJZtDHw... The tool is available on GitHub & JetBrains Marketplace!

Are there any benchmarks (etc) which show the costs of the SysV x64 ABI relative to a somewhat-or-perfectly-optimal ABI for that program? [Not for single microbenchmarks, because I can definitely create horrible overheads there, but on larger programs / benchmarks.]

Computing @ Imperial are hiring four Ass. / Assoc. Profs! Priority areas: - PL - Systems - Security - Software Eng. - Computer Architecture - Theoretical Computer Science Applications from individuals from underrepresented groups especially welcome! www.imperial.ac.uk/jobs/search-...

Humphrey is now presenting his work titled: Divining Profiler Accuracy: An Approach to Approximate Profiler Accuracy Through Machine Code-Level Slowdown My short take on our work, incl. link to paper: stefan-marr.de/2025/10/can-...

Can We Know Whether a Profiler is Accurate? Spoiler: yes we can! But it took us figuring out a way to work around the fundamental observer effect. stefan-marr.de/2025/10/can-... If you're at SPLASH, don't miss our talk at VMIL today and at OOPSLA on Saturday!

For those of you in Singapore, Jake is at SPLASH and presenting the paper on Saturday. He's friendly, and on the job market -- please find him and say hello!

New paper with @jakehughes.uk : Garbage Collection for Rust: The Finalizer Frontier. There are lots of GCs for Rust: we tried pushing as far as we could in a new direction, particularly looking at what can be done about the headache that is finalizers.

Last talk VMIL talk for 2025: RuntimeSave: A Graph Database of Runtime Values

Next VMIL talk Memory Tiering in Python Virtual Machine

Next VMIL talk MaTSa: Race Detection in Java

Next VMIL talk: TEAL: a Total Expressive Assembly Language

Next VMIL talk: Heterogeneous translation of Scala-like function types in Java-TX

The VMIL keynote The Wild West of post-POSIX IO Interfaces

Next VMIL talk Evaluating Candidate Instructions for Reliable Program Slowdown at the Compiler Level - Towards Supporting Fine-grained Slowdown for Advanced Developer Tooling This is our work, read more here: stefan-marr.de/2025/08/how-...

All VMIL papers are accessible here: dl.acm.org/doi/proceedi...

Next VMIL talk ASTro: An AST-based Reusable Optimization Framework

First VMIL talk: Copy-and-Patch Just-in-Time Compiler for R

Can We Know Whether a Profiler is Accurate? Spoiler: yes we can! But it took us figuring out a way to work around the fundamental observer effect. stefan-marr.de/2025/10/can-... If you're at SPLASH, don't miss our talk at VMIL today and at OOPSLA on Saturday!

Final MPLR talk for 2025: Dynamic and Static Code Analysis for Java Programs on Heterogeneous Hardware

Next MPLR talk TornadoViz: Visualizing Heterogeneous Execution Patterns in Modern Managed Runtime Systems

Next MPLR talk Fast & Easy ASTs for Flexible Embedded Interpreters

Next MPLR talk Fast and Compact: Reducing Size of AOT-Compiled Java Code Without Sacrificing Performance

Next MPLR talk Existentialize your Generics

Next MPLR talk SmartSweep: Efficient Space Reclamation in Tiered Managed Heaps

Next MPLR talk Co-operative JIT Compilation for Resource-Constrained Low-Power Coprocessors

All MPLR papers can be found here: dl.acm.org/doi/proceedi...

Next MPLR talk A Control-Flow Graph Approach to Language-Agnostic Debugging for Microcontrollers

MPLR now continues with a keynote: Joy of Meta-Tracing Just-in-Time Compilation: More Than Just a VM Generator by Hidehiko Masuhara

Next MPLR talk JASMaint: Portable Multi-language Taint Analysis for the Web

Next MPLR talk A Snapshot of the Performance of Wasm Backends for Managed Languages

MPLR started with Bringing Together Cross-ISA Checkpoint/Restoration and AOT Compilation of WebAssembly Programs

And, on my way to SPLASH. Attempt number 2.

Fast & Easy ASTs for Flexible Embedded Interpreters, in MPLR this week. A format encoding ASTs as simultaneously valid code in languages from Java to Haskell to Excel, allowing programs, parsers, and typecheckers to be serialised and loaded into interpreters in that language. mwh.nz/pubs/mplr25

Narrator: He's not gonna make it. Hrhr! He shall try again tomorrow...

And on my way to ---SPLASH---(Ding Dong) "We regret...flight cancelled..." 😫

ICFP/SPLASH'25 is starting tomorrow! Attending Sunday workshops and FARM Performance at #icfpsplash25? Make sure check out our illustrated guide on getting to NUS Conservatory and dining options on campus: conf.researchr.org/venue/icfp-s...

One week until ICFP/SPLASH’25! conf.researchr.org/home/icfp-sp...

GPULlama3.java our first GPU-accelerated Java-native LLM inference engine with #TornadoVM has officially been integrated to LangChain4J! Congratulations to the whole team for this achievement! Next week @devoxx.com we will showcase our demos as well as provide a deep dive on @tornadovm.org!

First Day: A New Chapter at the JKU It's Wednesday. Is this important? It's my first day in a new position. So, perhaps the real question is: what's going to be important to me from now on? stefan-marr.de/2025/10/firs...