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Christian Humer

@chumer.dev

PL/VM/Compilers at Oracle. Working on Truffle/Graal. ME/CFS Caretaker and Activist (https://ooe-mecfs.at). Austrian expat in Zurich.

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02.08.2023
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Latest posts by Christian Humer @chumer.dev

Bitte nicht müde werden auch mit politischen Verantwortlichen zu sprechen. Als Arzt hat man Gewicht, das höre ich häufig.

Danke für alles!

17.02.2026 22:23 👍 1 🔁 0 💬 0 📌 0

Today is the day where I kicked off my first LLM related project at work. I had a good run avoiding it. You can't hide from it forever I guess.

13.02.2026 19:11 👍 1 🔁 0 💬 0 📌 0

Bitte redet mehr über die echten Missstände im Gesundheitswesen und nicht über diese 💩.

Zb die Versorgung von PAIS betroffenen.

07.02.2026 13:15 👍 0 🔁 0 💬 0 📌 0
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Gedanken am Samstag:“Warum wir ein gutes Gesundheitssystem für alle brauchen“ - heute im Blog auf www.anschober.at

07.02.2026 08:37 👍 21 🔁 3 💬 0 📌 1

Work with us! We still have the best cookies!

04.02.2026 15:07 👍 2 🔁 0 💬 0 📌 0
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Good morning #JFokus!👋
Make sure to catch @ssmith.bsky.social and @fniephaus.com to ask anything you want to know about GraalVM & WebAssembly, and attend their session on Wednesday!

02.02.2026 10:13 👍 8 🔁 2 💬 1 📌 0

💙

31.01.2026 10:50 👍 3 🔁 0 💬 0 📌 0
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GraalVM 25.0.2 is now available! 🚀

Upgrade to get the latest security updates and improvements.

Release notes: www.graalvm.org/release-notes/
Downloads: www.graalvm.org/downloads/

21.01.2026 13:30 👍 14 🔁 6 💬 0 📌 0
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[GR-52220] Support for Cosmopolitan Libc · Issue #8350 · oracle/graal Feature request Build-once, run-anywhere, but for native-image Is your feature request related to a problem? Please describe. Currently, one must run a Native Image build for each operating system ...

Someone's added APE (Actually Portable Executable) support to the GraalVM AOT compiler for Java. So now it is possible to AOT compile Java to a single binary that runs on MacOS, Windows, and Linux on both x86 and ARM!
github.com/oracle/graal...

23.01.2026 20:04 👍 4 🔁 2 💬 0 📌 0

Das perfekte Behandlungskonzept gibt es bei ME/CFS ohnehin nicht. Deswegen müssen wir uns trauen auch etwas zu versuchen. Manche Bundesländer fangen endlich an zu handeln. Daraus kann man lernen und verbessern. Aber aktuell fehlt es überall an den Basics! Da muss man wirklich nicht diskutieren.

24.01.2026 11:16 👍 5 🔁 0 💬 0 📌 0

Min 70% fallen grad durch lt der neuen Studie von Hoffmann et al. Bei uns in oö ist noch keine einzige Besserung bei den Betroffenen angekommen. Nichts!

Wir müssen endlich handeln und nicht standardisieren und über neue Begrifflichkeiten streiten. Es brennt lichterloh!

24.01.2026 11:10 👍 5 🔁 0 💬 1 📌 0
Donate • WE&ME Foundation

Want to donate as well? 💙
👉 donate.weandmecfs.org/en-us/

Oracle employees, please reach out for donation matching.

If you’re thinking about running a similar company fundraiser, feel free to reach out as well. I’ve learned a few things along the way and I’m happy to share.

07.01.2026 13:46 👍 1 🔁 0 💬 0 📌 0
Screenshot of $13,863 raised by 30 donors and matched by Oracle.

Screenshot of $13,863 raised by 30 donors and matched by Oracle.

Feeling incredibly grateful! 🙏

Together with my amazing @Oracle colleagues, we raised nearly $14,000 to support high-impact biomedical research into ME/CFS, the disease my partner is suffering from, through @weandme.bsky.social . 💪🤩

#OracleGiving #MECFS

07.01.2026 13:46 👍 7 🔁 1 💬 1 📌 0
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Release TruffleRuby 25.0.0 · oracle/truffleruby TruffleRuby is a high-performance implementation of the Ruby programming language. It aims to be fully compatible with the standard implementation of Ruby, MRI. More information is available at htt...

TruffleRuby 25.0 is released! 🚀🎉
It can now run native extensions in parallel, just like Ruby code already ran in parallel in Threads on TruffleRuby!
It also features many compatibility improvements and notably support for custom Digest algorithms.
github.com/oracle/truff...

17.09.2025 15:18 👍 9 🔁 5 💬 1 📌 0

Just giving people free time is not enough. I think we should foster the culture of volunteering more. Build infrastructure to make it easier and broader. Build spaces to explore. Some of the richest life experiences can come from that and it can make our society stronger and more connected.

16.09.2025 22:44 👍 2 🔁 0 💬 0 📌 0

I personally think we shouldn't work less hours but we should work less weeks. More time for side projects and volunteering.

16.09.2025 22:27 👍 1 🔁 0 💬 1 📌 0
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GraalVM Community Edition 25 GraalVM is an advanced JDK with ahead-of-time Native Image compilation.

Lots of innovative features in this release. We hope you enjoy them!

Of course, there is so much more:
www.graalvm.org/release-note...

Whats your favorite?

16.09.2025 18:44 👍 2 🔁 0 💬 1 📌 0

Truffle now automatically detects deoptimization cycles. We also found and fixed many such bugs by enabling this feature for our tests!

Learn more here:
github.com/oracle/graal...

16.09.2025 18:44 👍 4 🔁 0 💬 1 📌 0
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Embedding Languages GraalVM is an advanced JDK with ahead-of-time Native Image compilation.

You can now switch from internal to external isolate mode with untrusted code. Running untrusted code in an external process can provide an additional layer of security.

Also, did I mention that GraalWasm now supports untrusted code execution?

More here: www.graalvm.org/latest/refer...

16.09.2025 18:44 👍 1 🔁 0 💬 1 📌 0

Polyglot isolates now ship with a new memory isolation technique called Monocle. Monocle is about 4x faster compared to the previous, fence-based mitigation.

My colleagues also published a wonderful paper about this:
www.shwetashinde.org/publications...

16.09.2025 18:44 👍 1 🔁 0 💬 1 📌 0

The GraalWasm Java Embedding API has gotten a face-lift. It now works more similarly to the Wasm embedding API in JavaScript.

Here is an extensive migration guide:
github.com/oracle/graal...

16.09.2025 18:44 👍 2 🔁 0 💬 1 📌 0

All language and tool Maven artifacts are now OSS licensed! For example, the 'js' Maven artifact is now identical to the 'js-community' counterpart.

If you want extensions like sandboxing, you now need to depend on the 'truffle-enterprise' dependency explicitly.

16.09.2025 18:44 👍 3 🔁 0 💬 1 📌 0

GraalVM 25 released today! 🎉

My favorites this release👇

16.09.2025 18:44 👍 14 🔁 5 💬 1 📌 0
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That was my total lunar eclipse today here in Zurich. There was a crowd of astrophotographers around. The moon was barely visible for 5 seconds, but the crowd was "ooooohhhh aaaahhh". I love these people.

07.09.2025 19:06 👍 3 🔁 0 💬 0 📌 0

Die Sicherheitsgarantien der USA sind neu. Darf man aber auch nicht überbewerten.

16.08.2025 20:29 👍 1 🔁 0 💬 0 📌 0
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openHAB 5.0 Release A new major release of openHAB is here! openHAB 5.0 comes with a lot of exciting new features and improvements, including Matter support, a new Python Scripting add-on and a ton of other enhancements.

openHAB, the open source home automation software, has integrated GraalPy!🤖🐍
"Unlike the Jython Scripting add-on, it offers full Python 3.11 support and is future-proof. It can be used as a scripting language in UI, file-based rules, and transformation services"
www.openhab.org/blog/2025-07...

24.07.2025 09:31 👍 6 🔁 4 💬 0 📌 0

My favourite event of the year, the GraalVM community summit, has a date!

If you are building with GraalVM, Truffle or one of our languages, please make sure to come and tell us about it! In return, you will get a chance to shape where we are headed next!

19.06.2025 10:45 👍 3 🔁 1 💬 0 📌 0

Ja das gibt's bei uns alles auch. 😔

06.06.2025 06:27 👍 0 🔁 0 💬 0 📌 0

Es sind viel mehr Kinder betroffen als die meisten glauben. Man sammelt aber keine Daten dazu zumindest hier in Ö von Versorgung ganz zu schweigen. Kinder sind leider oft auch schwerer betroffen als Erwachsene. Unsere lokalen Betroffeneninitiativen werden überrannt mit Anfragen.

06.06.2025 06:09 👍 0 🔁 0 💬 0 📌 0
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Ubuntu now provides the GraalVM JDK with Native Image as a snap for a quick installation: discourse.ubuntu.com/t/leveling-u...

02.06.2025 15:05 👍 25 🔁 7 💬 0 📌 0