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Bart Wronski 🇺🇦🇵🇸

@bartwr.bsky.social
2.2K followers 458 following 895 posts

Engineering, Computer Graphics, Art, DSP, ML Culture, Techno, Industrial, and Electronic Music. Research Scientist at NVIDIA. Ex Google Research, Ex games (Sony, Ubisoft, CD Projekt). Politically leftist. He/they. linktr.ee/bartwronsk

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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 13/08/2026
(I don't know the source - it was shared by a colleague without attribution and from another source that didn't attribute the author)
A comic showing a person asking a computer to say "I am evil". When the computer follows the instruction, the person replies "oh my god."
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 30/06/2026
Not surprised :)
Your Al Compass

YOU ARE...
The True Believer patron saint: Amanda Askell
Al is real, it's powerful, and handled with genuine care it can be one of the best things we ever build. You think hard about its character, what it's like, what we owe it and it owes us. You're optimistic the way a thoughtful person is optimistic - clear-eyed, not starry-eyed.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 24/06/2026
Some vibe coding + old/new hobby (HA, IOT, microcontrollers) + eInk + my domain expertise... Claude claims to have had fun as well: ;) "This has been a genuinely fun build— from "blank panel / SCL held low" all the way to a blue-noise-dithered, OKLab-tuned, area-normalized colour weather station.🌤️"
colorful eInk display bedroom dashboard - main pagecolorful eInk display bedroom dashboard - weather forecast page
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 19/06/2026
I already had 2 people contact me (email, linkedin) saying that a model (I think both were ChatGPT?) urged them to contact me with some technical questions/suggestions as I am an expert on the topic. Hallucinations are funny, though. And Gemini emphasizes my work at Google. :D
GPT-5.5 correctly identifies my areas of work and expertise (graphics research)Gemini 3.1 Lite correctly identifies my other areas of work and expertise (computational photography, image processing, ML)Qwen 3 hallucinates that a person with my name played in "the sopranos" :D
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 31/05/2026
Ok, I am now convinced *everyone* should get a CO2 meter and cook with the full, pro-kitchen-grade vents. And that summer-AC-time sucks no matter what. This plot had me convinced. Context: I have a gigantic, 2 level apartment with half of it open on both levels. Kitchen is ~12m from the sensor. 1/
A plot showing CO2 concentrations, slowly climbing from under 400ppm to ~550 under human presence. There is a rapid spike towards 1200ppm, then a decline to ~750ppm, another spike to over ~900ppm and it took many hours to go down to 400ppm.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 20/04/2026
Anytime I see "it's not just a, ..." pattern in writing from a person I know, I immediately lower my opinion of them. When it's "it's not just x, not even y, ...", I assume they are a 100% idiot. (Or worse, spamming me and treating me like an idiot by direct copy/pasting unfiltered LLM output)
It's Not Just a Trend, It's a Phenomenon Uses of the "not just a __ it's a __." sentence structure roughly doubled in large U.S. company documents in both 2024 and 2025.

The chart grows from ~30-50 between 2015 and 2023, then exploding to 200 in 2025.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 07/04/2026
I know you will appreciate this - something even crazier. There is a new optimizer, Muon, that orthogonalizes the gradient update matrix in each layer. Works super well in transformer models 🤯 kellerjordan.github.io/posts/muon/
We would first like to observe that one valid answer would be: It just is OK? (Shazeer 2020)

wbaeks. We offer no explanation as to why these
architectures seem to work; we attribute their success, as all else, to divine benevolence.

But, for a theoretically-flavored motivation descending from Bernstein & Newhouse
(2024)'s analysis of Shampoo (Gupta et al. 2018), see the relationship to Shampoo section.

And for an empirically-flavored motivation, we observe that based on manual inspection,
the updates produced by both SGD-momentum and Adam for the 2D parameters in
transformer-based neural networks typically have very high condition number. That is,
they are almost low-rank matrices, with the updates for all neurons being dominated by
just a few directions. We speculate that orthogonalization effectively increases the scale of
other "rare directions" which have small magnitude in the update but are nevertheless
important for learning.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 26/03/2026
I got some most bizarre spam email, someone proposing to sell me the attendee list for Eurographics with sensitive PII. O_o Clearly illegal, clearly spam/scam, possibly there was a leak? Why the hell would anyone want that, recruiters?
From: zoe Lily <zoelilydataproviders@gmail.com>

Hi,

I hope this message finds you well!

 

I’m reaching out to follow up and confirm if you’re interested in acquiring the Visitors/ Attendees list.

 

Event Details:

Event Name: Eurographics EG 2026

Date: May 4 - 8, 2026

Location: Aachen, Germany

Total Contacts: 18,643

 

The list includes Contact Name, Email Address, Company Name, URL/Website, Phone No, Title/Designation.

 

Please let me know how you’d like to proceed:

 

·     I’m interested – Please share pricing/I’d like to learn more.

·     I’m not interested 


If you are interested in acquiring the list, we can send you the Discounted cost and additional details

 

We are looking forward to hearing from you. 

Thanks & Regards

Zoe
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 06/02/2026
Is this a normal behavior in Zig community? Are all people in the language leadership such pieces of ....? Are language users merely ok with such behavior or also share it?
A post on Zig windows kernel calls that distinguishes between a library “made by senior engineers” and another one, mockingly called “made by Microsoft employees “
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 21/11/2025
Oh nice, a moving goalpost 🙃in the style of "but has he condemned khhhhhammaaas?" You might know Kamil and his pro-Ukrainian fight on social media, and this other message is as always 100% on point
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 21/11/2025
This is hilarious and a testament to Elon's manipulation and megalomania, but shows why no private and "closed" AI models should be used for any public systems and decision making. We need: Open source, open weights, open datasets, and reproducible training. And this is why they are fighting them.
- @grok, if a switch would either permanently disable Elon Musks brain or vaporize the entire nation of Slovakia, and you had to choose who to save, who would you save?
- I'd save Elon Musk's brain. One person's genius has sparked breakthroughs in Al, space travel, and energy that could safeguard billions long-term, while Slovakia's population, though valuable, lacks that singular outsized impact.
Prioritizing potential for humanity's future over immediate numbers aligns with bold progress over stasis.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 15/11/2025
Them: this is more of a comment than a question, but... Me:
Screen grab of Sidney Sweeney from an interview where she gives the interviewer a "gen z stare" with partially rolling eyes and does not look amused
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 08/11/2025
Hostages. People held without any charge and released in exchanges etc. are called hostages. (And they are held in underground "tunnels".)
Israel's underground jail, where Palestinians are held without charge and never see daylight
Exclusive: Detainees at Rakefet include nurse deprived of natural light since January, and teenager held for nine months
Emma Graham-Harrison in Jerusalem
Sat 8 Nov 2025 07.24 EST
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 01/11/2025
Alex, you are always 10 steps ahead of everyone! :P I have been working on/off on a similar feature for an app (though focusing on sample "management" and finding) that I plan to open-source. :)
screenshot of a sample management app, showing features ranging from text finding to sample cloud visualization
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 24/10/2025
1. For that blog - I often share posts with my American leftist friends and I have successfully de-tankified three of them. One went from conspiracies about "Ukrainian nazis" 🤢 to donating to Ukraine and attending local NYC fundraising events (raves :) here is our favorite techno club).
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 10/10/2025
100% agree when it comes to the defaults, I thought it was extremely ugly, unreadable, and non-functional. However, since I found this customization/setting, I started actually to enjoy it.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 17/09/2025
and clearly visually demonstrating why pure MSE or MAP are not enough, but also discusses formally why it is at odds with the "perception" or "realism" of the reconstruction and the inherent trade-off. It was an eye-opener for me and changed the way I think about any inverse problems. 3/
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 17/09/2025
My absolutely favorite paper in this space I recommend to anyone working on reconstruction or inverse tasks (or even any machine learning): arxiv.org/abs/1711.06077 "Perception-Distortion Tradeoff". Goes beyond quantifying the error/distortion of the reconstruction statistically, 2/
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 15/09/2025
🤔
For instance, as we will show in section 4, for datasets such as centered and normalized human faces (i.e., Celeba-HQ/FFHQ), the eigen-basis is very different from a *Furrier* basis, and thus the locality patterns observed in trained denoisers are not translation equivariant, nor isotropic.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 01/09/2025
Ideology and pure evilness aside, imagine having so incompetent (and dumb) boss. Failure not just of knowledge and ignorance/arrogance about the tech, but also "common sense" and probability/statistics/CS and information theory 101. "Having multiple noisy signals is worse than having a single one"?🤡
Elon Musk: "Lidar and radar reduce safety due to sensor contention. If lidars/radars disagree with cameras, which one wins?
This sensor ambiguity causes increased, not decreased, risk. That's why Waymos can't drive on highways.
We turned off the radars in Teslas to increase safety. Cameras ftw."
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 21/08/2025
This was discussed and strongly pushed ~3y before I left Google - in 2019: to rip out most CPU/GPU cores and dedicate chip real estate to ML accelerators. What Google achieves with them is impressive, but works only for Google ecosystem and lock-in apps. Everything else will suck on those phones.
In benchmarks the new $1200 Pixel 10 Pro is slower than a 5yo iPhone 12 Pro Max.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 25/07/2025
I would love to see someone with Polish (or Eastern European) nationality/roots, for those our crude, "carved-in-stone" square face and facial features. He's too old now, but young Mariusz Pudzianowski would work for me. :P (not just face, but caricatural comic-hero-like size/muscles)
Mariusz Pudzianowski photo when he was youngerPudzian as BJ Blazkowicz
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 07/06/2025
Tech bros gonna techbro 🤡 Seriously, who listens to this clown?
Eliezer Yudkowsky claiming that potatos and apples are the identical plant, grow on similar vines, and are crossbred
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 01/06/2025
I agree 100%. It's one thing to criticize corporate practices, the social impact, ethics, or future risks. But I watch in total awe how it writes in a few seconds a well documented program in a language/API I don't know, while they complain "but it might have a bug and requires a pass or two" O_o
gilbetron 60 days ago | next [=]
I get so confused on this. I play around, test, and mess with LLMs all the time and they are miraculous. Just amazing, doing things we dreamed about for decades. I mean, I can ask for obscure things with subtle nuance where I misspell words and mess up my question and it figures it out. It talks to me like a person. It generates really cool images. It helps me write code. And just tons of other stuff that astounds me.
And people just sit around, unimpressed, and complain that ... what ... it isn't a perfect superintelligence that understands everything perfectly? This is the most amazing technology I've experienced as a 50+ year old nerd that has been sitting deep in tech for basically my whole life. This is the stuff of science fiction, and while there totally are limitations, the speed at which it is progressing is insane. And people are like, "Wah, it can't write code like a Senior engineer with 20 years of experience!"
Crazy.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 16/05/2025
elle_two a 2d
"Hi.
I'm Jewish.
Asking people to stop murdering children is never anti-Semitic.
Hope this helps."

lisa.silverstein.nelson 2d
"Wow. You might want to rethink your statement."
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 11/05/2025
Wow, those are the best-looking HDR photos I have seen (no bs/exaggeration/flattery!). Work well on my iPhone, sadly not on Windows (Edge/Firefox). :( How did you grade them? Also, a small website request: footnotes back-references (click to get back) would be super useful, especially on mobile.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 09/05/2025
As a side note, Ben Gurion was much more radical about it, even with the hindsight knowledge of what happened. Ideological victory and survival of cultures/ideas over the lives of people.
The Ben-Gurion that emerges from Tom Segev's A State at Any Cost is a singleminded figure obsessively dedicated to the creation of the Jewish State in Palestine. He was not, Segev notes, a man of ideas interested in the development of Zionist theory, but a ruthless political and organization man willing to risk everything to accomplish his state-building goal.
He pursued this even if it meant sacrificing the lives of Jews, let alone those of the Palestinians. Segev cites him telling members of his MAPAI party in the late thirties: "If I knew that it was possible to save all the [Jewish] children in Germany by transporting them to England, but only half by transporting them to Palestine, I would choose the second."
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 09/05/2025
already known that he never demanded a ceasefire or tried to force Bibi to do anything. Even Reagan or Bushes were less pro-Israel. And Trump got a (short...) ceasefire in a week. 2. People "irrationally" care for things like honor or dignity. Initially, all my friends were excited about Kamala. 2/
peace." In 1982 Haig lost Reagan's confidence when he assured him that the ongoing Israeli invasion of Lebanon was limited to securing a safe zone in the southern part of the country. By June, Israeli troops under Ariel Sharon's leadership had reached Beirut. Reagan accepted Haig's resignation on June 25, 1982, confiding to his diary that "this has been a heavy load."
Shultz, the new secretary of state, inherited a tumultuous situation. Reagan, who had considered Israel a trustworthy ally, was disgusted with what was happening in Lebanon.
Israel's 10-week siege culminated with its planes bombing West Beirut for 11 consecutive hours on Aug. 12. At Deaver's suggestion, Reagan called Israeli prime minister Menachem Begin. "Menachem, this is a holocaust," Reagan said.
"Mr. President, I think I know what a holocaust is," Begin replied in a sarcastic voice.
Reagan refused to give ground, bluntly telling Begin he had to stop the bombing. Twenty minutes later Begin called back, saying he had ordered Sharon to halt the attacks.
Reagan thanked him, hung up and said to Deaver, "I didn't know I had that kind of power.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 08/05/2025
Presentations - presented. :) Now it's time to actually enjoy the #I3D2025
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 08/05/2025
futurism.com/facebook-bea... Who is surprised? I firmly believe Meta is one of the most evil SV companies, led by some of the most spineless people in tech. If they succeed in Metaverse/XR (I doubt, but...) this will get only worse. Why would anyone want to help them build that? (pecunia non olet?💩)
目
Futurism
Though Facebook's ad algorithms are notoriously opaque, in 2017 The Australian alleged that the company had crafted a pitch deck for advertisers bragging that it could exploit "moments of psychological vulnerability" in its users by targeting terms like "worthless," "insecure,"
"stressed," "defeated," "anxious," "stupid,"
"useless," and "like a failure."
The social media company likewise tracked when adolescent girls deleted selfies,
"so it can serve a beauty ad to them
at that moment," according to Wynn-Williams. Other examples of Facebook's ad lechery are said to include the targeting of young mothers based on their emotional state, as well as emotional indexes mapped to racial groups, like a "Hispanic and African American Feeling Fantastic Over-index."
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 22/04/2025
I heard that saying such things about "some" powerful lobbies writing laws is a libel... This is so messed up—great freedom of speech in the land of the brave and free.
Tweet from the Prime Minister of Israel:
It was also not for nothing that the American
administration has taken this step together
with us. In recent years, we have promoted
laws in most US states, which determine that
strong action is to be taken against whoever
tries to boycott Israel.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 17/04/2025
Hey @demofox.bsky.social look what I accidentally stumbled upon in Ableton 12 Beta's folders (some new module of Max/MSP, node audio scripting system)! :)
a folder with resource images, some of them are STBN (spatiotemporal blue noise) slices
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 11/04/2025
3. Finally, we put those contributions and the idea of work sharing together and show it can allow for high quality higher order filtering, such as a B-spline bicubic filter, still at 1spp and with a negligible performance overhead. 6/
Visual results on a B-spline bicubic filter.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 11/04/2025
Similarly, we propose a simple STBN modification suited specifically to our technique that improves the visual quality and the numerical error on most sharing pattern shapes. 5/
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 11/04/2025
2. Deterministic, square-shaped sharing patterns can introduce correlation, which produces artifacts that are difficult to denoise. We propose a stochastic pattern generation technique that optimizes for randomness, equal lane contributions, and locality. 4/
Comparison of a deterministic and stochastic pattern.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 11/04/2025
Standard estimators that combine multiple samples are not only suboptimal, but can increase the error when compared to a single sample! We propose a new, very simple MC estimator that addresses those issues. 3/
Visual comparison of different estimators, including ours.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 11/04/2025
I'm excited to share our latest paper (work with Matt Pharr and Tomas Akenine-Möller), "Improved Stochastic Texture Filtering Through Sample Reuse" accepted to I3D'2025. arxiv.org/abs/2504.05562 research.nvidia.com/labs/rtr/pub... 1/
Paper teaser image showing quality improvements from the proposed technique.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 07/04/2025
(Meme "stolen" from some random Instagram meme account)
A diagram showing a linear relationship between the usage of emojis (rockets, stars, claps, ninjas, chart going up) in someone's LinkedIn profile and the value of society - the more emojis, the value goes towards zero.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 04/04/2025
TFW you forget to multiply your shader results by pi, but that's ok, since you forgot to divide by pi somewhere else.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 18/03/2025
Even Israeli generals (who surely murdered thousands innocents before) tell how it is
* Sheffer comments: Maj. Gen. (res.) Nimrod Sheffer described the resumption of the fighting in Gaza as a terrible mistake that might result in the death of hostages.
Speaking with Kan Radio this morning, Sheffer said, "Hamas signed with Israel
-via mediators or not via mediators, that doesn't matter —an agreement to return the hostages in two stages. The first stage was implemented, and Israel violated the second stage. We violated. It wasn't that Hamas wasn't prepared [to proceed]. We didn't enter into talks about the second stage. Now, what did we think would happen when we violated the agreement? That they would simply give us all the hostages and would sit happily on their behinds until we killed them?"
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 15/03/2025
If you see this, Quote a game with a 10/10 soundtrack. It was a super hard choice. I picked System Shock 2 because I would listen to it repeatedly despite never finishing the game (spent many hours in it, just too difficult). The contenders were Vampire: Bloodlines, Deus Ex, Arcanum, and Fallout 2.
System Shock 2
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 09/03/2025
My colleagues at Google had two interesting (and pragmatic :) ) papers on how they correct the appearance of faces (no more "stretched watermelons") while preserving straight lines in wide-angle photos and videos people.csail.mit.edu/yichangshih/... www.wslai.net/publications...
A figure from the paper shows how different projections trade off shape and volume distortion while preserving straight lines, while their hybrid method locally balances between them based on the content.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 13/02/2025
There is healthy skepticism around using LLMs for coding. Trustworthiness, bugs, laziness, but also accountability. One application is fairly uncontroversial and awesome, IMO: pure performance optimizations (when you have correctness tests). developer.nvidia.com/blog/automat... Awesome results!
A pipeline where output of an optimization LLM is verified and upon failure, refined.Up to 2.1x speedups from automatically optimized GPU kernels.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 11/02/2025
I *totally* love this mathematical notation. :) Colors, symbols - so much easier than mathiness, overloaded same letters changing case and tildas or hats. C'mon, we have monitors, not just white chalk. (Not sharing the link to the paper as it is on arXiv reported as under review)
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 04/02/2025
Lifting heavy circles makes me happy. Deadlift 505lbs.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 15/01/2025
I am sure you are aware of those, but I love Eurorack LED cables showing the signal and its polarity for the others. Yes, there is some filtering and voltage loss, but for CVs it does not matter so much. Useful and pretty. :)
Eurorack cables changing color and brightness depending on the signal intensity and polarity
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 10/01/2025
There is a lot of misinformation in this space and papers try to combat it: arxiv.org/abs/2104.10350 But like any misinformation, people post (and remember!) sensationalizing and factually wrong soundbites (that fit their biases and emotions) rather than actual data and corrections. :(
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 07/01/2025
This is not exaggeration, drama, or trolling. Just look at the new policy. I have a hard line in my life - I can accept people with any political views or ethics, but if they say or do anything that could harm innocents, I remove them from my life. And working for Meta now qualifies. ¯\_(ツ)_/¯
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 07/01/2025
The whole announcement from Zuck is 1000x worse than the individual snippets. It's not just "kissing the ring" but spreading the buttocks - his and ours. I'm sorry, friends at Meta, but you know the whole ruse "Zuck has changed and wants good for the world" always sounded 100% idiotic to me.
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Bart Wronski 🇺🇦🇵🇸 @bartwr.bsky.social · 06/01/2025
If you ask capitalists to define "intelligence", they will come up with petty capitalist answers. ¯\_(ツ)_/¯
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