Yacine calls Isaac Sim horribly inefficient; reply: just use MJX
cixliv · x · 2026-08-31
Yacine MTB (ex-OpenAI) calls NVIDIA's Isaac Sim "the most horribly inefficient crap trainer out there". The top-flavored reply is simply "mjx bro" — pointing to MJX (MuJoCo XLA), Google's JAX/XLA GPU-accelerated physics simulation that powers many low-cost robot RL pipelines. A short exchange capturing the Isaac Sim vs MJX sentiment split in the embodied-AI training community.
Related event: Dev Slams NVIDIA Isaac Sim as Inefficient, Community Suggests MJX(2 posts)→
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