#Simulation (45)

Waterfall Pagination

0:59

Jev vs GPT-6 Astra vs GPT-4.1 mini: one apple-plate task, three LLM controllers in MuJoCo

@openroboto · 74 views · 2026-09-19

LLM ControlManipulationMuJoCo

0:11

mjbatch: Batched MuJoCo Simulation on a CPU Thread Pool

A small Python + C++ library from Kevin Zakka that steps thousands of MuJoCo simulations in parallel on the CPU through a single Batch object: C++ thread pool execution with the GIL released, bind() giving live array views across the whole batch, and expand() for per-simulation model parameters. Memory scales with thread count rather than simulation count, so 4096 simulations stay under 256MB; on a 24-thread machine with a Unitree G1 scene it measured 10.3x over a serial mj_step loop, reaching 676,019 sim-substeps per second with ten substeps batched per call. The repo ships six self-contained solver examples spanning iLQR, predictive-sampling MPC, PPO reinforcement learning, CEM hardware co-design and damped Gauss-Newton system identification, including a Go1 joystick controller that learns to walk in under a minute on a five-year-old M1 laptop.

SimulationMuJoCoParallel Simulation

Python2802

0:06

GPT-6 Astra Makes a Unitree Go1 Climb Stairs Blind

@sri299792458 · 171 views · 2026-09-09

GPT-6Quadruped robotsBlind Locomotion

RoboSim: A Robot-Native Rust Simulation Engine

@arai01robo · 251 views · 2026-09-09

SimulationRustRobotics

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GPT-6 Runs Real2Sim End to End from Robot Demonstrations

@Lingxiao234 · 861 views · 2026-09-07

Real-to-SimGPT-6Robot Learning

Genesis-Embodied-AI/genesis-worldApache-2.0

Genesis World: The Unified Multi-Physics Simulation Platform for Physical AI

Genesis AI's open simulation platform for physical AI: one Pythonic API over a multi-physics engine (rigid, FEM, MPM, PBD, SPH, Stable Fluid, IPC), the Nyx path tracer, and Quadrants, a cross-platform Python-to-GPU compiler. It is built to be the evaluation engine for robot foundation models rather than a data factory: 30,000 parallel environments at 43M FPS, and under a zero-shot real-to-sim protocol, sim-vs-real evaluation agreement of Pearson 0.8996 with mean maximum rank violation 0.0166. Apache 2.0, 29.9k stars.

SimulationPhysics EngineEmbodied AI

Python30k2.9k224