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Adds FastSAC implementation - #58

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louislelay wants to merge 2 commits into
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feat/fastsac
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Adds FastSAC implementation#58
louislelay wants to merge 2 commits into
mainfrom
feat/fastsac

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@louislelay

@louislelay louislelay commented Feb 20, 2026

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Adds a FastSAC implementation provided by @oxkitsune. Based on the HOLOSAMA implementation

To run it yourself, use: uv run pal_train Mjlab-Velocity-Flat-FastSAC-Pal-Kangaroo --env.scene.num-envs 4096

TODO:

  • : Add an ONNX exporter
  • : Test the policy in sim2real
  • : Make the runner less hacky?
  • : Unify the scripts/entrypoints to be able to use mjlab's train, play and list_envs out of the box

Below is a result after training for 10k iterations (30 minutes on a 5090!!) on a Velocity Tracking task for KANGAROO:

rl-video-step-0.mp4

Ref: https://younggyo.me/fastsac-humanoid/

@louislelay

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cc @saikishor

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