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Hardsim is a cloud simulation platform for robotics teams that want to run large simulation workloads without managing Kubernetes, GPU provisioning, or container orchestration. Built and operated by Hardlight.

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What You Can Do

  • Submit simulation jobs from Python with pip install hardsim.
  • Run parallel simulation workloads against cloud GPU workers.
  • Download artifacts (render.mp4, rollout logs, manifests) from completed jobs.
  • Download diagnostics artifacts (runner.log, diagnostics.json, user_job.log) from failed jobs.
  • Track usage and billing in credits.

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Quick SDK Flow

import hardsim as hs

robot_asset_id = hs.upload_input_asset("./assets/robot.urdf", asset_kind="robot")
scene_asset_id = hs.upload_input_asset("./assets/scene.usd", asset_kind="scene")
job = hs.submit_assets(robot_asset_id=robot_asset_id, scene_asset_id=scene_asset_id, robot_asset_type="urdf", num_envs=64, steps=2000)
result = hs.wait(job.job_id)
paths = hs.download(job.job_id, "./outputs")
  1. Getting Started
  2. Quickstart
  3. Isaac Lab Jobs
  4. Artifacts and Diagnostics
  5. Billing
  6. API Overview