Andreas Longva
@andlon.bsky.social
Researcher and PhD candidate @ RWTH Aachen University. I work in the intersection between math, physics and software. Simulating the macroscopic world 🌍🦀
andreaslongva.com
andreaslongva.com
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Andreas Longva
@andlon.bsky.social
· Dec 11
Thought I'd share an example for my paradis #rustlang crate with the Bluesky crowd.
It lets you (often safely) express parallel patterns that are really hard to do in Rust without the abstractions provided by paradis.
Check out my blog post for more! andreaslongva.com/blog/enter-p...
It lets you (often safely) express parallel patterns that are really hard to do in Rust without the abstractions provided by paradis.
Check out my blog post for more! andreaslongva.com/blog/enter-p...
Surprised but elated to see Germany make good on its word to fund research into post-infectious diseases.
Beyond post-viral diseases like ME/CFS and Long COVID — for which effective therapy is urgently needed — viral infections are also implicated in diseases like MS, rheumatoid arthritis,
...
Beyond post-viral diseases like ME/CFS and Long COVID — for which effective therapy is urgently needed — viral infections are also implicated in diseases like MS, rheumatoid arthritis,
...
1) 🇩🇪 Some really good news! Germany plans to invest half a billion euros in research on diseases such as ME/CFS and Long Covid.
They are calling it "The National Decade Against Post-Infectious Diseases"
They are calling it "The National Decade Against Post-Infectious Diseases"
November 14, 2025 at 3:17 PM
Surprised but elated to see Germany make good on its word to fund research into post-infectious diseases.
Beyond post-viral diseases like ME/CFS and Long COVID — for which effective therapy is urgently needed — viral infections are also implicated in diseases like MS, rheumatoid arthritis,
...
Beyond post-viral diseases like ME/CFS and Long COVID — for which effective therapy is urgently needed — viral infections are also implicated in diseases like MS, rheumatoid arthritis,
...
Reposted by Andreas Longva
You are doing geometry processing, you need precision, performance, and easy compilation on Linux/Mac/Windows ?
My fork of the mini-gmp lib is available here:
github.com/BrunoLevy/mi...
Use it wisely ! (with great power comes great responsibilities...)
Image credit: Ed Sheeran
My fork of the mini-gmp lib is available here:
github.com/BrunoLevy/mi...
Use it wisely ! (with great power comes great responsibilities...)
Image credit: Ed Sheeran
November 10, 2025 at 3:35 PM
You are doing geometry processing, you need precision, performance, and easy compilation on Linux/Mac/Windows ?
My fork of the mini-gmp lib is available here:
github.com/BrunoLevy/mi...
Use it wisely ! (with great power comes great responsibilities...)
Image credit: Ed Sheeran
My fork of the mini-gmp lib is available here:
github.com/BrunoLevy/mi...
Use it wisely ! (with great power comes great responsibilities...)
Image credit: Ed Sheeran
Reposted by Andreas Longva
The world’s first trillionaire initiated a move that has left more than half a million people dead, most of whom are children.
November 7, 2025 at 7:39 AM
The world’s first trillionaire initiated a move that has left more than half a million people dead, most of whom are children.
Reposted by Andreas Longva
My PhD student Ty Trusty and a grass roots group of graduate wants to petition the Canada to start a national lab (eg INRIA) in Canada. You can read their rationale here: docs.google.com/document/d/1.... If it resonates with you, like it did me, sign the letter and share forms.gle/NqW7Q5qYkytP...!
Research Institute Letter
The Honourable Evan Solomon 409 Parliament street Toronto, Ontario M5A 3A1 Dear Mr. Solomon, RE: Canada Needs a National Research Institute to Stop the “Brain Drain” All my friends are geniuses and ...
docs.google.com
November 3, 2025 at 3:47 PM
My PhD student Ty Trusty and a grass roots group of graduate wants to petition the Canada to start a national lab (eg INRIA) in Canada. You can read their rationale here: docs.google.com/document/d/1.... If it resonates with you, like it did me, sign the letter and share forms.gle/NqW7Q5qYkytP...!
Reposted by Andreas Longva
Fun geeking out on this analysis of natural termite nest construction and reconstruction via simulation. Amazing shapes!
Self-organized biotectonics of termite nests. PNAS. 2021. Alexander Heyde, Lijie Guo, Christian Jost, Guy Theraulaz, L. Mahadevan. www.pnas.org/doi/full/10....
#ALife
#stigmergy
Self-organized biotectonics of termite nests. PNAS. 2021. Alexander Heyde, Lijie Guo, Christian Jost, Guy Theraulaz, L. Mahadevan. www.pnas.org/doi/full/10....
#ALife
#stigmergy
November 1, 2025 at 6:27 PM
Fun geeking out on this analysis of natural termite nest construction and reconstruction via simulation. Amazing shapes!
Self-organized biotectonics of termite nests. PNAS. 2021. Alexander Heyde, Lijie Guo, Christian Jost, Guy Theraulaz, L. Mahadevan. www.pnas.org/doi/full/10....
#ALife
#stigmergy
Self-organized biotectonics of termite nests. PNAS. 2021. Alexander Heyde, Lijie Guo, Christian Jost, Guy Theraulaz, L. Mahadevan. www.pnas.org/doi/full/10....
#ALife
#stigmergy
Reposted by Andreas Longva
“In my work with the (Nuremberg Trial) defendants, I was searching for the nature of evil, and I now think I have come close to defining it. A lack of empathy... a genuine incapacity to feel with their fellow men. Evil, I think, is the absence of empathy.”
- Captain G.M. Gilbert, US Army
- Captain G.M. Gilbert, US Army
October 29, 2025 at 9:37 PM
“In my work with the (Nuremberg Trial) defendants, I was searching for the nature of evil, and I now think I have come close to defining it. A lack of empathy... a genuine incapacity to feel with their fellow men. Evil, I think, is the absence of empathy.”
- Captain G.M. Gilbert, US Army
- Captain G.M. Gilbert, US Army
Reposted by Andreas Longva
Rust 1.91.0 has been released! 🌈 🦀
This version brings you tier 1 support for aarch64-pc-windows-msvc, warnings for dangling pointers to locals, new methods on AtomicPtr, array::repeat, BTreeMap::extract_if, const TypeId::of, and more!
Check out the announcement: blog.rust-lang.org/2025/10/30/R...
This version brings you tier 1 support for aarch64-pc-windows-msvc, warnings for dangling pointers to locals, new methods on AtomicPtr, array::repeat, BTreeMap::extract_if, const TypeId::of, and more!
Check out the announcement: blog.rust-lang.org/2025/10/30/R...
Announcing Rust 1.91.0 | Rust Blog
Empowering everyone to build reliable and efficient software.
blog.rust-lang.org
October 30, 2025 at 8:21 PM
Rust 1.91.0 has been released! 🌈 🦀
This version brings you tier 1 support for aarch64-pc-windows-msvc, warnings for dangling pointers to locals, new methods on AtomicPtr, array::repeat, BTreeMap::extract_if, const TypeId::of, and more!
Check out the announcement: blog.rust-lang.org/2025/10/30/R...
This version brings you tier 1 support for aarch64-pc-windows-msvc, warnings for dangling pointers to locals, new methods on AtomicPtr, array::repeat, BTreeMap::extract_if, const TypeId::of, and more!
Check out the announcement: blog.rust-lang.org/2025/10/30/R...
Reposted by Andreas Longva
Very excited to share VoMP, our surface to volumetric simready asset generator. Our method doesn’t over fit to a simulator, it predicts ground truth (as measured) Young’s modulus and poison’s ratio much more accurately then previous methods.
📢want to create realistic dynamic 3D worlds (>100 splats)?
my NVIDIA internship project, VoMP, is the first feed-forward approach turning surface geometry into volumetric sim-ready assets with real-world materials.
🌐Project: research.nvidia.com/labs/sil/pro...
📜Paper: arxiv.org/abs/2510.22975
my NVIDIA internship project, VoMP, is the first feed-forward approach turning surface geometry into volumetric sim-ready assets with real-world materials.
🌐Project: research.nvidia.com/labs/sil/pro...
📜Paper: arxiv.org/abs/2510.22975
October 30, 2025 at 7:29 PM
Very excited to share VoMP, our surface to volumetric simready asset generator. Our method doesn’t over fit to a simulator, it predicts ground truth (as measured) Young’s modulus and poison’s ratio much more accurately then previous methods.
Reposted by Andreas Longva
I gave a talk at Pacific Graphics 2025 on the topic of "Classical Computer Graphics in the Age of Generative AI". I've uploaded the recording to Youtube today.
www.youtube.com/watch?v=Vyci...
www.youtube.com/watch?v=Vyci...
"Classical Computer Graphics in the Age of Generative AI", Pacific Graphics 2025 Keynote, Tzu-Mao Li
YouTube video by Tzu-Mao Li
www.youtube.com
October 30, 2025 at 7:53 PM
I gave a talk at Pacific Graphics 2025 on the topic of "Classical Computer Graphics in the Age of Generative AI". I've uploaded the recording to Youtube today.
www.youtube.com/watch?v=Vyci...
www.youtube.com/watch?v=Vyci...
UltimateGuitar sends me an offer for 90% off every 3-4 days.
I just got an email with a special HALLOWEEN SALE!!! with ... 90% off 😅
I just got an email with a special HALLOWEEN SALE!!! with ... 90% off 😅
October 30, 2025 at 12:46 PM
UltimateGuitar sends me an offer for 90% off every 3-4 days.
I just got an email with a special HALLOWEEN SALE!!! with ... 90% off 😅
I just got an email with a special HALLOWEEN SALE!!! with ... 90% off 😅
Reposted by Andreas Longva
Yet again, we can't afford to let LLMs become a source of epistemic grounding for society.
Largest study of its kind shows AI assistants misrepresent news content 45% of the time – regardless of language or territory
An intensive international study was coordinated by the European Broadcasting Union (EBU) and led by the BBC
www.bbc.co.uk
October 24, 2025 at 5:21 AM
Yet again, we can't afford to let LLMs become a source of epistemic grounding for society.
Reposted by Andreas Longva
As part of my new class assignments I made a simple USD writer for saving animations of dynamic triangle meshes. USD has many issues but it’s the best format I’ve found for sharing scenes like this.
github.com/dilevin/usdm...
github.com/dilevin/usdm...
October 21, 2025 at 1:19 PM
As part of my new class assignments I made a simple USD writer for saving animations of dynamic triangle meshes. USD has many issues but it’s the best format I’ve found for sharing scenes like this.
github.com/dilevin/usdm...
github.com/dilevin/usdm...
Reposted by Andreas Longva
Spent some time trying to do conservative culling of geometry for distance function evaluation. Turns out I ended up reinventing something like GJK (which I really have no clue about or experience with) with exact bounds.
October 16, 2025 at 8:22 PM
Spent some time trying to do conservative culling of geometry for distance function evaluation. Turns out I ended up reinventing something like GJK (which I really have no clue about or experience with) with exact bounds.
Reposted by Andreas Longva
Source Code now available for our ACM SIGGRAPH project
C-Tubes: Design and Optimization of Tubular Structures Composed of Developable Strips
Paper and code: go.epfl.ch/c-tubes
Authors: Michele Vidulis *, Klara Mundilova *, Quentin Becker *, Florin Isvoranu, Mark Pauly
*joint first authors
C-Tubes: Design and Optimization of Tubular Structures Composed of Developable Strips
Paper and code: go.epfl.ch/c-tubes
Authors: Michele Vidulis *, Klara Mundilova *, Quentin Becker *, Florin Isvoranu, Mark Pauly
*joint first authors
October 17, 2025 at 7:58 AM
Source Code now available for our ACM SIGGRAPH project
C-Tubes: Design and Optimization of Tubular Structures Composed of Developable Strips
Paper and code: go.epfl.ch/c-tubes
Authors: Michele Vidulis *, Klara Mundilova *, Quentin Becker *, Florin Isvoranu, Mark Pauly
*joint first authors
C-Tubes: Design and Optimization of Tubular Structures Composed of Developable Strips
Paper and code: go.epfl.ch/c-tubes
Authors: Michele Vidulis *, Klara Mundilova *, Quentin Becker *, Florin Isvoranu, Mark Pauly
*joint first authors
Measuring step count by the movement of the wrist is a bit of a funny concept.
I regularly cut about 200 meters worth of carrots for dinner according to my watch.
I regularly cut about 200 meters worth of carrots for dinner according to my watch.
October 15, 2025 at 7:37 PM
Measuring step count by the movement of the wrist is a bit of a funny concept.
I regularly cut about 200 meters worth of carrots for dinner according to my watch.
I regularly cut about 200 meters worth of carrots for dinner according to my watch.
Reposted by Andreas Longva
#geogram 1.9.7 is out !
Geogram is a software library of geometric algorithms, it has mesh intersection, remeshing, CSG, Delaunay and Voronoi in 2D and 3D, constrained Delaunay triangulation in 2D ... and much more !
github.com/BrunoLevy/ge...
Geogram is a software library of geometric algorithms, it has mesh intersection, remeshing, CSG, Delaunay and Voronoi in 2D and 3D, constrained Delaunay triangulation in 2D ... and much more !
github.com/BrunoLevy/ge...
October 9, 2025 at 8:01 AM
#geogram 1.9.7 is out !
Geogram is a software library of geometric algorithms, it has mesh intersection, remeshing, CSG, Delaunay and Voronoi in 2D and 3D, constrained Delaunay triangulation in 2D ... and much more !
github.com/BrunoLevy/ge...
Geogram is a software library of geometric algorithms, it has mesh intersection, remeshing, CSG, Delaunay and Voronoi in 2D and 3D, constrained Delaunay triangulation in 2D ... and much more !
github.com/BrunoLevy/ge...
Reposted by Andreas Longva
The #SIGGRAPH Thesis Fast Forward 2026 submissions are now open! Deadline: Nov 7th 2025. Let the world know what you've been working on in your PhD! More info at research.siggraph.org/thesisff/ and check out last year's iteration youtube.com/watch?v=8esF...
October 7, 2025 at 3:06 PM
The #SIGGRAPH Thesis Fast Forward 2026 submissions are now open! Deadline: Nov 7th 2025. Let the world know what you've been working on in your PhD! More info at research.siggraph.org/thesisff/ and check out last year's iteration youtube.com/watch?v=8esF...
Musicians, are there better options for Chords & Lyrics than Ultimate Guitar Tabs and Songsterr? They both suck, but I can't seem to find something actually good.
October 5, 2025 at 2:50 PM
Musicians, are there better options for Chords & Lyrics than Ultimate Guitar Tabs and Songsterr? They both suck, but I can't seem to find something actually good.
Reposted by Andreas Longva
Graphite's interactive "CosmoViewer". Explore your cosmologic simulations interactively !
September 29, 2025 at 10:00 PM
Graphite's interactive "CosmoViewer". Explore your cosmologic simulations interactively !
Reposted by Andreas Longva
Jolt Physics v5.4.0 is out! Check out the release notes here: github.com/jrouwe/JoltP...
Release 5.4.0 · jrouwe/JoltPhysics
There are a few minor breaking changes, see this document.
New Functionality
Added Cosserat rods to soft bodies. This is a stick constraint with an orientation that can be used to attach geometry....
github.com
September 27, 2025 at 12:33 PM
Jolt Physics v5.4.0 is out! Check out the release notes here: github.com/jrouwe/JoltP...
Reposted by Andreas Longva
Large-scale semi-discrete optimal transport with distributed Voronoi diagrams,
Final version available here:
www.sciencedirect.com/science/arti...
Final version available here:
www.sciencedirect.com/science/arti...
September 26, 2025 at 8:15 AM
Large-scale semi-discrete optimal transport with distributed Voronoi diagrams,
Final version available here:
www.sciencedirect.com/science/arti...
Final version available here:
www.sciencedirect.com/science/arti...
Reposted by Andreas Longva
Is #geogram's Constrained Delaunay Triangulation robust ?
... on the testbench !
github.com/BrunoLevy/ge...
... on the testbench !
github.com/BrunoLevy/ge...
September 24, 2025 at 7:50 PM
Is #geogram's Constrained Delaunay Triangulation robust ?
... on the testbench !
github.com/BrunoLevy/ge...
... on the testbench !
github.com/BrunoLevy/ge...
Reposted by Andreas Longva
Nicely produced clip by Matt Wein and Marylee Williams about our recent dice design project at @scsatcmu.bsky.social and @adobe.com
youtube.com/shorts/jD0ag...
🎲 🎥 🐉 🪙
youtube.com/shorts/jD0ag...
🎲 🎥 🐉 🪙
Rethinking Fair Dice
YouTube video by CMU School of Computer Science
youtube.com
September 24, 2025 at 3:39 PM
Nicely produced clip by Matt Wein and Marylee Williams about our recent dice design project at @scsatcmu.bsky.social and @adobe.com
youtube.com/shorts/jD0ag...
🎲 🎥 🐉 🪙
youtube.com/shorts/jD0ag...
🎲 🎥 🐉 🪙
I don't like calling people dumb, but I will make an exception because this man's actions affect us all.
I honestly can't think of a dumber individual. Of all the people I've ever seen, Trump might just be consistently the dumbest.
And that's the president!
Still baffled, all these years later.
I honestly can't think of a dumber individual. Of all the people I've ever seen, Trump might just be consistently the dumbest.
And that's the president!
Still baffled, all these years later.
He’s sincerely the dumbest man to ever occupy the office.
Trump: "It's too much liquid. Too many different things are going into that baby at too big a number. The size of this thing when you look at it. It's like 80 different vaccines and beyond vaccines."
September 23, 2025 at 11:56 AM
I don't like calling people dumb, but I will make an exception because this man's actions affect us all.
I honestly can't think of a dumber individual. Of all the people I've ever seen, Trump might just be consistently the dumbest.
And that's the president!
Still baffled, all these years later.
I honestly can't think of a dumber individual. Of all the people I've ever seen, Trump might just be consistently the dumbest.
And that's the president!
Still baffled, all these years later.
Reposted by Andreas Longva
The "AI for Social Good" narrative is a tactic to consolidate power in the hands of those with no commitment to social good. The tech does not do what it is claimed to do and what it is claimed to do exacerbates root problems. Uncritical technosolutionism is a denial of service attack on humanity.
AI is the wrong tool to tackle complex societal & systemic problems. AI4SG is more about PR victories, boosting AI adoption (regardless of merit/usefulness) & laundering accountability for harmful tech, extractive practices, abetting atrocities. yours truly
www.project-syndicate.org/magazine/ai-...
www.project-syndicate.org/magazine/ai-...
The False Promise of “AI for Social Good”
Abeba Birhane refutes industry claims about the technology's potential to solve complex social problems.
www.project-syndicate.org
September 16, 2025 at 3:57 PM
The "AI for Social Good" narrative is a tactic to consolidate power in the hands of those with no commitment to social good. The tech does not do what it is claimed to do and what it is claimed to do exacerbates root problems. Uncritical technosolutionism is a denial of service attack on humanity.