GPU-accelerated robotics simulation with MJWarp

Hugging Face now supports GPU-accelerated robotics simulation using MJWarp, a NVIDIA Warp implementation of MuJoCo physics. This enables users to run hundreds or thousands of parallel simulation environments on GPUs, significantly increasing aggregate throughput for large-scale sampling and reinforcement learning workloads. The integration allows for migration of existing MuJoCo scenes to a batched GPU execution model, with a focus on performance tuning and validation.