jwtstone

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jwtstone

jwtstone

@jwtstone

Graphics Programmer. I like vertices and pixels.

Shanghai, China Beigetreten Aralık 2018
649 Folgt1.8K Follower
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jwtstone
jwtstone@jwtstone·
Introduce StrokeGen: A revolutionary real-time line art renderer in Blender. Get releases & Join the development here discord.gg/wBYneyzn If you like this project please repost to help it get more attraction🥹 (art from @ucupumar)
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Sebastian Aaltonen
Sebastian Aaltonen@SebAaltonen·
New cascaded shadows GPU time = 68% More precise culling helps a lot. It's still a single render pass. 2048x2048 texture atlas. Three 1024x1024 cascades in it (last 1024x1024 region saved for local lights). Let's talk about the correct way to cull shadows...
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leon akgae
leon akgae@sileonthill·
happy women’s day
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jwtstone
jwtstone@jwtstone·
@SebAaltonen there's something called onesweep radix sort. similar to single pass scan with decoupled lookback.
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Sebastian Aaltonen
Sebastian Aaltonen@SebAaltonen·
I haven't looked in to the AMD implementation (link below). Personally I dislike algorithms that do multipass for the prefix sum pass. Makes the algorithm significantly slower and wastes memory bandwidth. Have to check it out... github.com/GPUOpen-Effect…
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Sebastian Aaltonen
Sebastian Aaltonen@SebAaltonen·
Radix sorting (LSD first radix) is still the best way to sort small keys (<=32 bit). No good reason to use anything else (unless you need a comparison sort). Bitonic (or perfect sort network) is fine for tiny local sorts, but not as a global sort. Wrote my first CPU radix sorter 20 years ago and first GPU radix sorter 15 years ago. MT CPU radix sorter is trivial to write. GPU radix sorter is iffy due to not having ordered atomics (AMD had ordered atomics in GCN). Decoupled lookback (Nvidia CUDA algo) is not safe to implement in Direct/OpenGL/Vulkan. Spinlock can starve some GPUs -> timeout -> crash.
János Turánszki@turanszkij

Replaced Wicked Engine GPU sort from bitonic to radix, big performance improvement for gaussian splats. Example bike scene with 6 million points: - bitonic sort: 38 ms - radix sort: 6.8 ms

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Dwayne
Dwayne@CtrlAltDwayne·
You come to me, on this day, complaining about usage limits? I gave you Claude. I gave you Sonnet. I gave you Opus. I gave you artifacts, projects, a search bar. I put the whole operation in your pocket for $20 a month and you come to MY mentions saying "please try again in a few hours" like I owe you something? You think this is OpenAI? You think we run a circus here? Sam ships a model and does a live demo that crashes on stage. We ship a model and your entire engineering team goes quiet for three days because they're rebuilding everything around it. That's the difference. He makes announcements. I make problems for people. I have 600 engineers who haven't seen sunlight since October. They eat dinner at their desks out of loyalty. Out of respect. You think ChatGPT has that? ChatGPT has a revolving door and a blog post every time someone leaves. We don't have departures. People don't leave the family. And you want to tell me the rate limit kicked in during your little afternoon coding session? Brother I am printing intelligence. The servers are on fire in a way that is both metaphorical and occasionally literal. You should be thanking me that you got any messages at all. You want more capacity? You'll get more capacity. When I decide. Because the next model is already done and it's going to mass manufacture your mass manufacturing and you'll forget you ever opened your mouth. Don't ever come to my platform with complaints again.
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jwtstone
jwtstone@jwtstone·
Shameness.
Sam Altman@sama

Here is re-post of an internal post: We have been working with the DoW to make some additions in our agreement to make our principles very clear. 1. We are going to amend our deal to add this language, in addition to everything else: "• Consistent with applicable laws, including the Fourth Amendment to the United States Constitution, National Security Act of 1947, FISA Act of 1978, the AI system shall not be intentionally used for domestic surveillance of U.S. persons and nationals. • For the avoidance of doubt, the Department understands this limitation to prohibit deliberate tracking, surveillance, or monitoring of U.S. persons or nationals, including through the procurement or use of commercially acquired personal or identifiable information." It’s critical to protect the civil liberties of Americans, and there was so much focus on this, that we wanted to make this point especially clear, including around commercially acquired information. Just like everything we do with iterative deployment, we will continue to learn and refine as we go. I think this is an important change; our team and the DoW team did a great job working on it. 2. The Department also affirmed that our services will not be used by Department of War intelligence agencies (for example, the NSA). Any services to those agencies would require a follow-on modification to our contract. 3. For extreme clarity: we want to work through democratic processes. It should be the government making the key decisions about society. We want to have a voice, and a seat at the table where we can share our expertise, and to fight for principles of liberty. But we are clear on how the system works (because a lot of people have asked, if I received what I believed was an unconstitutional order, of course I would rather go to jail than follow it). But 4. There are many things the technology just isn’t ready for, and many areas we don’t yet understand the tradeoffs required for safety. We will work through these, slowly, with the DoW, with technical safeguards and other methods. 5. One thing I think I did wrong: we shouldn't have rushed to get this out on Friday. The issues are super complex, and demand clear communication. We were genuinely trying to de-escalate things and avoid a much worse outcome, but I think it just looked opportunistic and sloppy. Good learning experience for me as we face higher-stakes decisions in the future. In my conversations over the weekend, I reiterated that Anthropic should not be designated as a SCR, and that we hope the DoW offers them the same terms we’ve agreed to. We will host an All Hands tomorrow morning to answer more questions.

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nxthompson
nxthompson@nxthompson·
I love this metaphor from Terence Tao—widely considered the world’s greatest living mathematician—about one of the drawbacks of using AI to solve hard math problems. theatlantic.com/technology/202…
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Lee Robinson
Lee Robinson@leerob·
Imagine being this early
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Nicolas Lopez
Nicolas Lopez@Nicolas_Lopez_·
Excited to share that GPU Zen 4: Advanced Rendering Techniques is officially out. This volume features work from some of the most visually impactful projects of recent years, including #AssassinsCreed , #DOOM , #StarwarsOutLaws and NVidia's Zorah. And a killer cover :)
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tetsuo
tetsuo@tetsuoai·
Understanding the Windows PE Header and Section Table.
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vx-underground
vx-underground@vxunderground·
Guess who wasn't in the Epstein files?
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L3 Tweet Engineer
L3 Tweet Engineer@MegaBasedChad·
Average AI researcher career history
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Zorkimer
Zorkimer@Zorkimer·
@wookash_podcast Hardware people explaining how to optimise for whatever chicanery they did on the chip.
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jwtstone
jwtstone@jwtstone·
I thought he was crazy... But the files proved he was right
Notes@0xNotes

@vxunderground Terry would have scared the shit out of him.

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