I learned a really important life lesson during my research. You see, I do this kind of thing. This is a ray tracing or a light transport simulation as we call it. And it has a superpower. What is that? Well, it can simulate reality. Yes, this is really possible. No AI needed at all. You can give it a scene and it will simulate the path of light rays bouncing around and give you an image of what that scene would look like in reality. It is absolutely insane that we can do that. I love it. But wait, not so fast. Even if you do it perfectly at first, this is what it looks like. Oh my, this is terrible. What is going on? Well, that is the life lesson. This was just simulating one ray going through each of these pixels. This is what we call one sample. One sample is not enough. But if you do two samples, you get something like this. Better maybe a bit. Getting better, but still a long way off. And after millions and millions of rays, we get the beautiful final image. When you first do it, it is a very emotional moment. When we started, I thought this would be impossible. And yet, here it is. So, here is two things I'd like to share with you. One is a life lesson that I learned even if you have the perfect system. At first, it might seem that it does not work at all, but you have to keep at it. And it may take a long time. And two, I'd love to share this feeling with you, but it's impossible because when you first succeed, it is beyond words. But wait, I think I found a way to actually share this feeling with you through a song. A popular request from you fellow scholars. So, here it is. And if you watch until the end of the video, I'll give you something so you can also create a simulation like this yourself for free. All right, with that said, this is Caro and the papers. Late night green glow, pixels looking thin. Shadows my heart are rendering sin. My lights like it just fine. Nothing here is looking right. But then I saw the future. I got to the light. Monty color something one bounce at a time. Roll the dice. The music you me One more time just reality. Heat. Heat. Pass light. Smoke floats by. Every bounce comes through the lights. has come a Spain Heat. Heat. Heat. Heat. Heat. out of my race from the wait and see the world agree with the universe says yes that's right we chase the Yeah. Heat. Scream still. The truth is light. Every shadow now lives. We follow the light. We follow the light. All right, that was so much fun. I hope you enjoyed it as much as we did. I am not sure if I ever heard a song written about ray tracing. All right, I promised you something and it is for free. I taught this master level course at the technical university of Vienna and I think knowledge should be free for everyone. So, it's not like the courses you see elsewhere. It is completely free. In fact, you can't even pay for it, even if you wanted. Although, this fellow scholar was hilarious. All right, so in this one, I try my best to teach you the physics of light and then we code up a light simulation program together from scratch. Enjoy. Here you see me running the full Deepseek AI model through Lambda GPU Cloud. 671 billion parameters running super fast and super reliably. This is insane. I love it and I use it on a regular basis. Lambda provides you with powerful NVIDIA GPUs to run your own chatbots and experiments. Seriously, try it out now at lambda.ai/papers AI/papers or click the link in the description.
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