NVIDIA Just Solved The Hardest Problem in Physics Simulation!
•September 27, 2025
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Why It Matters
OGC enables real‑time, penetration‑free physics at GPU speeds, unlocking higher realism for games, movies, and VR while dramatically cutting the computational cost that has limited interactive simulations.
Summary
The video spotlights a breakthrough in computer‑generated physics called Offset Geometric Contact (OGC), a technique that finally delivers truly penetration‑free simulations at speeds previously thought impossible. Developed by a star‑studded team of graphics researchers and highlighted by NVIDIA’s hardware, OGC replaces the legacy Incremental Potential Contact (IPC) method, which often stalled entire simulations when a single tiny collision was detected.
Key insights revolve around OGC’s local “force‑field” armor that surrounds each mesh element and pushes only outward, perpendicular to surfaces. This eliminates the global slowdown of IPC and prevents the unnatural stretching artifacts that plagued cloth and soft‑body simulations. Benchmarks cited in the video show OGC running more than 300 times faster than IPC, handling scenes built from two million triangles at roughly ten updates per second on a single GPU, and even recovering from deliberately corrupted initial states.
The presenter illustrates the impact with vivid examples: a 65 000‑element yarn knot that stays intact under tension, a cloth simulation that no longer leaks through a character’s body, and a winter‑to‑summer scene rendered in real time. He also notes the method’s limitations—occasionally rubbery contact forces and slower performance at extreme velocities—but emphasizes that the overall speed and stability represent a quantum leap for interactive graphics.
For the industry, OGC promises to close the realism gap in games, film VFX, and virtual‑reality environments without sacrificing performance. By leveraging massive GPU parallelism, developers can now embed high‑fidelity collision handling into real‑time pipelines, opening doors to more immersive experiences and reducing reliance on costly offline simulations.
Original Description
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Guide:
Rent one of their GPUs with over 16GB of VRAM
Open a terminal
Just get Ollama with this command - https://ollama.com/download/linux
Then run ollama run gpt-oss:120b - https://ollama.com/library/gpt-oss:120b
📝 The paper is available here:
Sources:
📝 My paper on simulations that look almost like reality is available for free here:
Or this is the orig. Nature Physics link with clickable citations:
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