policy deployment (lerobot-rollout)

lerobot-rollout \
    --strategy.type=base \
    --policy.path=lerobot/act_koch_real \
    --robot.type=koch_follower \
    --robot.port=/dev/ttyACM0 \
    --task="pick up cube" \
    --duration=30

lerobot-rollout \
    --strategy.type=base \
    --policy.path=${HF_USER}/my_policy \
    --robot.type=so100_follower \
    --robot.port=/dev/ttyACM0 \
    --robot.cameras="{ front: {type: opencv, index_or_path: 0, width: 640, height: 480, fps: 30}}" \
    --task="Put lego brick into the box" \
    --duration=60

lerobot-rollout \
    --strategy.type=sentry \
    --strategy.upload_every_n_episodes=5 \
    --policy.path=${HF_USER}/my_policy \
    --robot.type=so100_follower \
    --robot.port=/dev/ttyACM0 \
    --robot.cameras="{ front: {type: opencv, index_or_path: 0, width: 640, height: 480, fps: 30}}" \
    --dataset.repo_id=${HF_USER}/rollout_eval_data \
    --dataset.single_task="Put lego brick into the box" \
    --duration=3600

lerobot-rollout \
    --strategy.type=highlight \
    --strategy.ring_buffer_seconds=30 \
    --strategy.save_key=s \
    --strategy.push_key=h \
    --policy.path=${HF_USER}/my_policy \
    --robot.type=koch_follower \
    --robot.port=/dev/ttyACM0 \
    --dataset.repo_id=${HF_USER}/rollout_highlight_data \
    --dataset.single_task="Pick up the red cube"

lerobot-rollout \
    --strategy.type=dagger \
    --strategy.num_episodes=20 \
    --policy.path=outputs/pretrain/checkpoints/last/pretrained_model \
    --robot.type=bi_openarm_follower \
    --teleop.type=bi_openarm_mini \
    --dataset.repo_id=${HF_USER}/rollout_hil_data \
    --dataset.single_task="Fold the T-shirt"

lerobot-rollout \
    --strategy.type=dagger \
    --strategy.record_autonomous=true \
    --strategy.num_episodes=50 \
    --policy.path=${HF_USER}/my_policy \
    --robot.type=so100_follower \
    --robot.port=/dev/ttyACM0 \
    --teleop.type=so101_leader \
    --teleop.port=/dev/ttyACM1 \
    --dataset.repo_id=${HF_USER}/rollout_dagger_data \
    --dataset.single_task="Grasp the block"

lerobot-rollout \
    --strategy.type=episodic \
    --policy.path=${HF_USER}/my_policy \
    --robot.type=so100_follower \
    --robot.port=/dev/ttyACM0 \
    --teleop.type=so100_leader \
    --teleop.port=/dev/ttyACM1 \
    --dataset.repo_id=${HF_USER}/my_eval_data \
    --dataset.num_episodes=20 \
    --dataset.episode_time_s=30 \
    --dataset.reset_time_s=10 \
    --dataset.single_task="Pick up the red cube"

from dataclasses import dataclass
from typing import ClassVar

from lerobot.rollout import RolloutContext, RolloutStrategy, RolloutStrategyConfig


@RolloutStrategyConfig.register_subclass("patrol")
@dataclass
class PatrolStrategyConfig(RolloutStrategyConfig):
    dataset_mode: ClassVar[str] = "required"  # the engine creates the dataset for you
    legs: int = 2  # becomes --strategy.legs


class PatrolStrategy(RolloutStrategy):
    def run(self, ctx: RolloutContext) -> None:
        ...  # the paced control loop: see the contract on RolloutStrategy.run

    def teardown(self, ctx: RolloutContext) -> None:
        ctx.data.dataset.finalize()
        self._teardown_hardware(ctx.hardware, ctx.runtime.cfg.return_to_initial_position)

lerobot-rollout \
    --strategy.type=patrol \
    --strategy.legs=3 \
    --policy.path=${HF_USER}/my_policy \
    --robot.type=so100_follower \
    --robot.port=/dev/ttyACM0 \
    --dataset.repo_id=${HF_USER}/rollout_patrol \
    --dataset.single_task="patrol the aisle"

lerobot-rollout \
    --strategy.type=base \
    --inference.type=rtc \
    --inference.rtc.execution_horizon=10 \
    --inference.rtc.max_guidance_weight=10.0 \
    --policy.path=${HF_USER}/pi0_policy \
    --robot.type=so100_follower \
    --robot.port=/dev/ttyACM0 \
    --robot.cameras="{ front: {type: opencv, index_or_path: 0, width: 640, height: 480, fps: 30}}" \
    --task="Pick up the cube" \
    --duration=60 \
    --device=cuda

lerobot-rollout \
    --strategy.type=base \
    --policy.path=${HF_USER}/my_smolvla_policy \
    --robot.type=so100_follower \
    --robot.port=/dev/ttyACM0 \
    --robot.cameras="{ front: {type: opencv, index_or_path: 0, width: 640, height: 480, fps: 30}}" \
    --task="pick up the cube" \
    --interactive=true

> /start
Rollout running — task 'pick up the cube'. /subtask <text> to change it, ...
> /subtask put the cube in the box
Task: 'pick up the cube' → 'put the cube in the box' (applies from the next policy inference)
> /vqa is the cube inside the box?
Asked: 'is the cube inside the box?' — answering from the next observation...
Q: is the cube inside the box?
A: No — the cube is on the table to the left of the box.
> /reset
Task restored to 'pick up the cube'
Resetting — returning the robot to its initial position...
Robot reset — holding at initial position. /start to run.
> /stop

(printf '/start\n'; sleep 60; printf '/stop\n') | lerobot-rollout ... --interactive=true

lerobot-rollout \
    --strategy.type=sentry \
    --policy.path=${HF_USER}/my_smolvla_policy \
    --robot.type=so100_follower \
    --robot.port=/dev/ttyACM0 \
    --dataset.repo_id=${HF_USER}/rollout_cube_sessions \
    --task="pick up the cube" \
    --interactive=true

from threading import Event, Thread

from lerobot.rollout import (
    LinkedEvent,
    RolloutController,
    RolloutEvent,
    build_rollout_context,
    create_strategy,
)

parent = Event()  # your application's shutdown signal
ctx = build_rollout_context(cfg, LinkedEvent(parent))  # loads policy, connects robot
strategy = create_strategy(cfg.strategy)
strategy.setup(ctx)

controller = RolloutController(strategy, ctx, on_event=print)  # or your own observer
serve_thread = Thread(target=controller.serve)  # serve() blocks; run it where you like
serve_thread.start()

controller.start()                        # robot starts executing the policy
controller.set_task("grab the red cube")  # re-instruct mid-run
controller.reset()                        # stop movement, return home, stay warm
controller.stop()                         # end serve()

serve_thread.join()
strategy.teardown(ctx)  # teardown stays with the caller

Cadence (episode 1): 29.84 Hz policy vs 30 Hz target · 1200 ticks, 20.1 s measured · 6/598 cycles over the 33.3 ms budget (work mean 18.7 ms, worst 48.1 ms)
Cadence (episode 2): 29.84 Hz policy vs 30 Hz target · 1200 ticks, 20.1 s measured · 6/599 cycles over the 33.3 ms budget (work mean 18.7 ms, worst 48.1 ms)
Cadence summary — whole run, 2 episodes · target 30 Hz × 2 (16.7 ms tick slot, 33.3 ms cycle budget): 2400 ticks, 1197 cycles judged
  effective cadence: 29.84 Hz policy / 59.67 Hz commands over 40.2 s measured
  cycles over the 33.3 ms work budget: 12/1197 (1.0%) — work mean 18.7 ms, worst 48.1 ms
  ticks over their 16.7 ms slot: 40/2400 (costs interpolation smoothness only)
  loop-body steps (share of measured work):
    observe      mean   3.13 ms · worst   9.00 ms ·  31.7% of work · 2400 calls
    process_obs  mean   0.50 ms · worst   1.00 ms ·   5.1% of work · 2400 calls
    infer        mean   5.18 ms · worst  40.00 ms ·  52.4% of work · 2400 calls
    send         mean   0.40 ms · worst   0.40 ms ·   4.1% of work · 2400 calls
    record       mean   0.67 ms · worst 620.00 ms ·   6.8% of work · 2402 calls
  pacing headroom: 7.4 ms slept per tick on average (max 13.0 ms) — near zero means the loop is saturated

from lerobot.rollout import BaseStrategyConfig, RolloutConfig, build_rollout_context
from lerobot.rollout.inference import SyncInferenceConfig
from lerobot.rollout.strategies import BaseStrategy
from lerobot.utils.process import ProcessSignalHandler

cfg = RolloutConfig(
    robot=my_robot_config,
    policy=my_policy_config,
    strategy=BaseStrategyConfig(),
    inference=SyncInferenceConfig(),
    fps=30,
    duration=60,
    task="my task",
)

signal_handler = ProcessSignalHandler(use_threads=True)
ctx = build_rollout_context(
    cfg,
    signal_handler.shutdown_event,
    robot_action_processor=my_custom_action_processor,       # optional
    robot_observation_processor=my_custom_obs_processor,     # optional
)

strategy = BaseStrategy(cfg.strategy)
try:
    strategy.setup(ctx)
    strategy.run(ctx)
finally:
    strategy.teardown(ctx)