Stefan Marr

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: https://2026.ecoop.org/home/ICOOOLPS-2026#program

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?
Here the MoreVMs recordings from earlier this year, and yes, in-person, the sound was perfect 🙈:

https://www.youtube.com/playlist?list=PLaGBIclRpkSXwpgWfVFwWnzPNP513mK1B

Towards Least-Privilege WebAssembly Applications: Transparent Interposition for WebAssembly Components

Olav Blaak talked about his approach to fine-grained security policies for Wasm components.

https://youtu.be/a3a_le54tW0

This one was another MoreVMs'26 talk.

RE: @smarr@mastodon.acm.org

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? 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 🙈

@smarr@mastodon.acm.org

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.

Retaining the Renaissance: Lessons Learned For Maintainable Benchmark Suites

Lubomír Bulej talk at MoreVMs'26 about keeping a benchmarking suite relevant, and what we may learn from the Renaissance project.

https://youtu.be/SF3T0YHHZMc

Code Layout Optimization Guided by Temporal Profiling Information
by Marko Spasic

This MoreVMs'26 talk improves the start up of applications by making sure that the code that's needed next is close by. Especially relevant for larger binaries.

https://youtu.be/57KtH-w37B0

@lindsey@recurse.social @cfbolz@mastodon.social @CanLehmann@mastodon.social @verijit@mastodon.social a CPU is also just a fancy interpreter! Everything is an interpreter! Insert evil laughter

@CanLehmann@mastodon.social @ltratt@mastodon.social @verijit@mastodon.social @cfbolz@mastodon.social oh, so, this is not based on RPython? Fun stuff! CF, might you be talking about it at ICOOOLPS? https://2026.ecoop.org/home/ICOOOLPS-2026

We are going to put some of the MoreVMs'26 talks online.

First up:
How Many Compilers Is Too Many? A Look at V8’s History, Tradeoffs, and Architectural Choices

By Leszek Swirski from Google's V8 team

https://youtu.be/LpJ79MxplUk

@jfdm@discuss.systems @csgordon@discuss.systems @lindsey@recurse.social @jeremysiek@types.pl @krismicinski@types.pl at least you could sell 2. as "practice for coding interviews", assuming that's still a thing when they graduate... 🙈

A bit late and not yet finalized, but our program for MoreVMs'26 is online. Early registration deadline is in a few hours, but will remain open afterwards still. Join us in Munich, March 17th, for a day of talks around language implementation! https://2026.programming-conference.org/home/MoreVMs-2026