Improve visualize_dataset, Improve AbstractReplayBuffer, Small improvements
This commit is contained in:
Remi Cadene
parent
2f80d71c3e
commit
f95ecd66fc
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@ -1,6 +1,5 @@
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import abc
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import logging
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import math
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from pathlib import Path
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from typing import Callable
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@ -50,6 +49,22 @@ class AbstractExperienceReplay(TensorDictReplayBuffer):
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transform=transform,
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)
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@property
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def stats_patterns(self) -> dict:
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return {
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("observation", "state"): "b c -> 1 c",
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("observation", "image"): "b c h w -> 1 c 1 1",
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("action"): "b c -> 1 c",
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}
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@property
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def image_keys(self) -> list:
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return [("observation", "image")]
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@property
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def num_cameras(self) -> int:
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return len(self.image_keys)
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@property
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def num_samples(self) -> int:
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return len(self)
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@ -67,7 +82,7 @@ class AbstractExperienceReplay(TensorDictReplayBuffer):
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stats = torch.load(stats_path)
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else:
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logging.info(f"compute_stats and save to {stats_path}")
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stats = self._compute_stats(self._storage._storage, num_batch, batch_size)
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stats = self._compute_stats(num_batch, batch_size)
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torch.save(stats, stats_path)
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return stats
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@ -85,101 +100,59 @@ class AbstractExperienceReplay(TensorDictReplayBuffer):
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def _is_downloaded(self) -> bool:
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return self.data_dir.is_dir()
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def _compute_stats(self, storage, num_batch=100, batch_size=32):
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def _compute_stats(self, num_batch=100, batch_size=32):
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rb = TensorDictReplayBuffer(
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storage=storage,
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storage=self._storage,
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batch_size=batch_size,
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prefetch=True,
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)
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batch = rb.sample()
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image_channels = batch["observation", "image"].shape[1]
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image_mean = torch.zeros(image_channels)
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image_std = torch.zeros(image_channels)
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image_max = torch.tensor([-math.inf] * image_channels)
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image_min = torch.tensor([math.inf] * image_channels)
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state_channels = batch["observation", "state"].shape[1]
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state_mean = torch.zeros(state_channels)
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state_std = torch.zeros(state_channels)
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state_max = torch.tensor([-math.inf] * state_channels)
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state_min = torch.tensor([math.inf] * state_channels)
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action_channels = batch["action"].shape[1]
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action_mean = torch.zeros(action_channels)
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action_std = torch.zeros(action_channels)
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action_max = torch.tensor([-math.inf] * action_channels)
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action_min = torch.tensor([math.inf] * action_channels)
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mean, std, max, min = {}, {}, {}, {}
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# compute mean, min, max
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for _ in tqdm.tqdm(range(num_batch)):
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image_mean += einops.reduce(batch["observation", "image"], "b c h w -> c", "mean")
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state_mean += einops.reduce(batch["observation", "state"], "b c -> c", "mean")
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action_mean += einops.reduce(batch["action"], "b c -> c", "mean")
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b_image_max = einops.reduce(batch["observation", "image"], "b c h w -> c", "max")
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b_image_min = einops.reduce(batch["observation", "image"], "b c h w -> c", "min")
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b_state_max = einops.reduce(batch["observation", "state"], "b c -> c", "max")
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b_state_min = einops.reduce(batch["observation", "state"], "b c -> c", "min")
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b_action_max = einops.reduce(batch["action"], "b c -> c", "max")
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b_action_min = einops.reduce(batch["action"], "b c -> c", "min")
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image_max = torch.maximum(image_max, b_image_max)
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image_min = torch.maximum(image_min, b_image_min)
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state_max = torch.maximum(state_max, b_state_max)
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state_min = torch.maximum(state_min, b_state_min)
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action_max = torch.maximum(action_max, b_action_max)
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action_min = torch.maximum(action_min, b_action_min)
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batch = rb.sample()
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for key, pattern in self.stats_patterns.items():
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batch[key] = batch[key].float()
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if key not in mean:
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# first batch initialize mean, min, max
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mean[key] = einops.reduce(batch[key], pattern, "mean")
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max[key] = einops.reduce(batch[key], pattern, "max")
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min[key] = einops.reduce(batch[key], pattern, "min")
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else:
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mean[key] += einops.reduce(batch[key], pattern, "mean")
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max[key] = torch.maximum(max[key], einops.reduce(batch[key], pattern, "max"))
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min[key] = torch.minimum(min[key], einops.reduce(batch[key], pattern, "min"))
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batch = rb.sample()
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image_mean /= num_batch
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state_mean /= num_batch
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action_mean /= num_batch
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for key in self.stats_patterns:
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mean[key] /= num_batch
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for i in tqdm.tqdm(range(num_batch)):
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b_image_mean = einops.reduce(batch["observation", "image"], "b c h w -> c", "mean")
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b_state_mean = einops.reduce(batch["observation", "state"], "b c -> c", "mean")
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b_action_mean = einops.reduce(batch["action"], "b c -> c", "mean")
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image_std += (b_image_mean - image_mean) ** 2
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state_std += (b_state_mean - state_mean) ** 2
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action_std += (b_action_mean - action_mean) ** 2
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b_image_max = einops.reduce(batch["observation", "image"], "b c h w -> c", "max")
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b_image_min = einops.reduce(batch["observation", "image"], "b c h w -> c", "min")
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b_state_max = einops.reduce(batch["observation", "state"], "b c -> c", "max")
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b_state_min = einops.reduce(batch["observation", "state"], "b c -> c", "min")
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b_action_max = einops.reduce(batch["action"], "b c -> c", "max")
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b_action_min = einops.reduce(batch["action"], "b c -> c", "min")
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image_max = torch.maximum(image_max, b_image_max)
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image_min = torch.maximum(image_min, b_image_min)
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state_max = torch.maximum(state_max, b_state_max)
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state_min = torch.maximum(state_min, b_state_min)
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action_max = torch.maximum(action_max, b_action_max)
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action_min = torch.maximum(action_min, b_action_min)
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if i < num_batch - 1:
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# compute std, min, max
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for _ in tqdm.tqdm(range(num_batch)):
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batch = rb.sample()
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for key, pattern in self.stats_patterns.items():
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batch[key] = batch[key].float()
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batch_mean = einops.reduce(batch[key], pattern, "mean")
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if key not in std:
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# first batch initialize std
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std[key] = (batch_mean - mean[key]) ** 2
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else:
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std[key] += (batch_mean - mean[key]) ** 2
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max[key] = torch.maximum(max[key], einops.reduce(batch[key], pattern, "max"))
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min[key] = torch.minimum(min[key], einops.reduce(batch[key], pattern, "min"))
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image_std = torch.sqrt(image_std / num_batch)
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state_std = torch.sqrt(state_std / num_batch)
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action_std = torch.sqrt(action_std / num_batch)
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for key in self.stats_patterns:
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std[key] = torch.sqrt(std[key] / num_batch)
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stats = TensorDict(
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{
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("observation", "image", "mean"): image_mean[None, :, None, None],
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("observation", "image", "std"): image_std[None, :, None, None],
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("observation", "image", "max"): image_max[None, :, None, None],
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("observation", "image", "min"): image_min[None, :, None, None],
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("observation", "state", "mean"): state_mean[None, :],
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("observation", "state", "std"): state_std[None, :],
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("observation", "state", "max"): state_max[None, :],
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("observation", "state", "min"): state_min[None, :],
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("action", "mean"): action_mean[None, :],
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("action", "std"): action_std[None, :],
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("action", "max"): action_max[None, :],
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("action", "min"): action_min[None, :],
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},
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batch_size=[],
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)
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stats["next", "observation", "image"] = stats["observation", "image"]
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stats["next", "observation", "state"] = stats["observation", "state"]
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stats = TensorDict({}, batch_size=[])
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for key in self.stats_patterns:
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stats[(*key, "mean")] = mean[key]
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stats[(*key, "std")] = std[key]
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stats[(*key, "max")] = max[key]
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stats[(*key, "min")] = min[key]
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if key[0] == "observation":
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# use same stats for the next observations
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stats[("next", *key)] = stats[key]
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return stats
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@ -10,7 +10,9 @@ from lerobot.common.envs.transforms import NormalizeTransform
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DATA_DIR = Path(os.environ.get("DATA_DIR", "data"))
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def make_offline_buffer(cfg, sampler=None):
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def make_offline_buffer(
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cfg, overwrite_sampler=None, normalize=True, overwrite_batch_size=None, overwrite_prefetch=None
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):
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if cfg.policy.balanced_sampling:
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assert cfg.online_steps > 0
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batch_size = None
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@ -23,9 +25,13 @@ def make_offline_buffer(cfg, sampler=None):
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pin_memory = cfg.device == "cuda"
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prefetch = cfg.prefetch
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overwrite_sampler = sampler is not None
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if overwrite_batch_size is not None:
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batch_size = overwrite_batch_size
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if not overwrite_sampler:
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if overwrite_prefetch is not None:
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prefetch = overwrite_prefetch
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if overwrite_sampler is None:
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# TODO(rcadene): move batch_size outside
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num_traj_per_batch = cfg.policy.batch_size # // cfg.horizon
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# TODO(rcadene): Sampler outputs a batch_size <= cfg.batch_size.
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@ -46,6 +52,8 @@ def make_offline_buffer(cfg, sampler=None):
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num_slices=num_traj_per_batch,
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strict_length=False,
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)
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else:
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sampler = overwrite_sampler
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if cfg.env.name == "simxarm":
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from lerobot.common.datasets.simxarm import SimxarmExperienceReplay
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@ -70,15 +78,17 @@ def make_offline_buffer(cfg, sampler=None):
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prefetch=prefetch if isinstance(prefetch, int) else None,
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)
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if normalize:
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# TODO(rcadene): make normalization strategy configurable between mean_std, min_max, manual_min_max, min_max_from_spec
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stats = offline_buffer.compute_or_load_stats()
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in_keys = [("observation", "state"), ("action")]
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if cfg.policy == "tdmpc":
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for key in offline_buffer.image_keys:
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# TODO(rcadene): imagenet normalization is applied inside diffusion policy, but no normalization inside tdmpc
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in_keys.append(("observation", "image"))
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in_keys.append(key)
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# since we use next observations in tdmpc
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in_keys.append(("next", "observation", "image"))
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in_keys.append(("next", *key))
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in_keys.append(("next", "observation", "state"))
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if cfg.policy == "diffusion" and cfg.env.name == "pusht":
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@ -92,8 +102,7 @@ def make_offline_buffer(cfg, sampler=None):
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offline_buffer.set_transform(transform)
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if not overwrite_sampler:
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num_steps = len(offline_buffer)
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index = torch.arange(0, num_steps, 1)
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index = torch.arange(0, offline_buffer.num_frames, 1)
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sampler.extend(index)
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return offline_buffer
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@ -183,8 +183,7 @@ class PushtExperienceReplay(AbstractExperienceReplay):
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# last step of demonstration is considered done
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done[-1] = True
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print("before " + """episode = TensorDict(""")
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episode = TensorDict(
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ep_td = TensorDict(
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{
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("observation", "image"): image[:-1],
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("observation", "state"): agent_pos[:-1],
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@ -203,11 +202,11 @@ class PushtExperienceReplay(AbstractExperienceReplay):
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if episode_id == 0:
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# hack to initialize tensordict data structure to store episodes
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td_data = episode[0].expand(total_frames).memmap_like(self.data_dir)
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td_data = ep_td[0].expand(total_frames).memmap_like(self.data_dir)
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td_data[idxtd : idxtd + len(episode)] = episode
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td_data[idxtd : idxtd + len(ep_td)] = ep_td
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idx0 = idx1
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idxtd = idxtd + len(episode)
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idxtd = idxtd + len(ep_td)
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return TensorStorage(td_data.lock_())
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@ -6,6 +6,10 @@ from omegaconf import OmegaConf
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from termcolor import colored
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def log_output_dir(out_dir):
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logging.info(colored("Output dir:", "yellow", attrs=["bold"]) + f" {out_dir}")
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def cfg_to_group(cfg, return_list=False):
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"""Return a wandb-safe group name for logging. Optionally returns group name as list."""
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# lst = [cfg.task, cfg.modality, re.sub("[^0-9a-zA-Z]+", "-", cfg.exp_name)]
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@ -9,13 +9,13 @@ import numpy as np
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import torch
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import tqdm
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from tensordict.nn import TensorDictModule
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from termcolor import colored
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from torchrl.envs import EnvBase
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from lerobot.common.datasets.factory import make_offline_buffer
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from lerobot.common.envs.factory import make_env
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from lerobot.common.logger import log_output_dir
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from lerobot.common.policies.factory import make_policy
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from lerobot.common.utils import set_seed
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from lerobot.common.utils import init_logging, set_seed
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def write_video(video_path, stacked_frames, fps):
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@ -109,10 +109,18 @@ def eval(cfg: dict, out_dir=None):
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if out_dir is None:
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raise NotImplementedError()
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init_logging()
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if cfg.device == "cuda":
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assert torch.cuda.is_available()
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else:
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logging.warning("Using CPU, this will be slow.")
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torch.backends.cudnn.benchmark = True
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torch.backends.cuda.matmul.allow_tf32 = True
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set_seed(cfg.seed)
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print(colored("Log dir:", "yellow", attrs=["bold"]), out_dir)
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log_output_dir(out_dir)
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logging.info("make_offline_buffer")
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offline_buffer = make_offline_buffer(cfg)
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@ -142,6 +150,8 @@ def eval(cfg: dict, out_dir=None):
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)
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print(metrics)
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logging.info("End of eval")
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if __name__ == "__main__":
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eval_cli()
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@ -4,13 +4,12 @@ import hydra
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import numpy as np
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import torch
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from tensordict.nn import TensorDictModule
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from termcolor import colored
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from torchrl.data import LazyMemmapStorage, TensorDictReplayBuffer
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from torchrl.data.replay_buffers import PrioritizedSliceSampler
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from lerobot.common.datasets.factory import make_offline_buffer
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from lerobot.common.envs.factory import make_env
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from lerobot.common.logger import Logger
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from lerobot.common.logger import Logger, log_output_dir
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from lerobot.common.policies.factory import make_policy
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from lerobot.common.utils import format_big_number, init_logging, set_seed
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from lerobot.scripts.eval import eval_policy
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@ -164,7 +163,7 @@ def train(cfg: dict, out_dir=None, job_name=None):
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# log metrics to terminal and wandb
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logger = Logger(out_dir, job_name, cfg)
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logging.info(colored("Work dir:", "yellow", attrs=["bold"]) + f" {out_dir}")
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log_output_dir(out_dir)
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logging.info(f"{cfg.env.task=}")
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logging.info(f"{cfg.offline_steps=} ({format_big_number(cfg.offline_steps)})")
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logging.info(f"{cfg.online_steps=}")
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@ -212,7 +211,6 @@ def train(cfg: dict, out_dir=None, job_name=None):
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for env_step in range(cfg.online_steps):
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if env_step == 0:
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logging.info("Start online training by interacting with environment")
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# TODO: use SyncDataCollector for that?
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# TODO: add configurable number of rollout? (default=1)
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with torch.no_grad():
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rollout = env.rollout(
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@ -268,6 +266,8 @@ def train(cfg: dict, out_dir=None, job_name=None):
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step += 1
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online_step += 1
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logging.info("End of training")
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if __name__ == "__main__":
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train_cli()
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@ -1,13 +1,20 @@
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import logging
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import threading
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from pathlib import Path
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import einops
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import hydra
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import imageio
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import torch
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from torchrl.data.replay_buffers import SliceSamplerWithoutReplacement
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from torchrl.data.replay_buffers import (
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SamplerWithoutReplacement,
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)
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from lerobot.common.datasets.factory import make_offline_buffer
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from lerobot.common.logger import log_output_dir
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from lerobot.common.utils import init_logging
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NUM_EPISODES_TO_RENDER = 10
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NUM_EPISODES_TO_RENDER = 50
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MAX_NUM_STEPS = 1000
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FIRST_FRAME = 0
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@ -17,45 +24,88 @@ def visualize_dataset_cli(cfg: dict):
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visualize_dataset(cfg, out_dir=hydra.core.hydra_config.HydraConfig.get().runtime.output_dir)
|
||||
|
||||
|
||||
def cat_and_write_video(video_path, frames, fps):
|
||||
frames = torch.cat(frames)
|
||||
assert frames.dtype == torch.uint8
|
||||
frames = einops.rearrange(frames, "b c h w -> b h w c").numpy()
|
||||
imageio.mimsave(video_path, frames, fps=fps)
|
||||
|
||||
|
||||
def visualize_dataset(cfg: dict, out_dir=None):
|
||||
if out_dir is None:
|
||||
raise NotImplementedError()
|
||||
|
||||
sampler = SliceSamplerWithoutReplacement(
|
||||
num_slices=1,
|
||||
strict_length=False,
|
||||
init_logging()
|
||||
log_output_dir(out_dir)
|
||||
|
||||
# we expect frames of each episode to be stored next to each others sequentially
|
||||
sampler = SamplerWithoutReplacement(
|
||||
shuffle=False,
|
||||
)
|
||||
|
||||
offline_buffer = make_offline_buffer(cfg, sampler)
|
||||
|
||||
for _ in range(NUM_EPISODES_TO_RENDER):
|
||||
episode = offline_buffer.sample(MAX_NUM_STEPS)
|
||||
|
||||
ep_idx = episode["episode"][FIRST_FRAME].item()
|
||||
ep_frames = torch.cat(
|
||||
[
|
||||
episode["observation"]["image"][FIRST_FRAME][None, ...],
|
||||
episode["next", "observation"]["image"],
|
||||
],
|
||||
dim=0,
|
||||
logging.info("make_offline_buffer")
|
||||
offline_buffer = make_offline_buffer(
|
||||
cfg, overwrite_sampler=sampler, normalize=False, overwrite_batch_size=1, overwrite_prefetch=12
|
||||
)
|
||||
|
||||
logging.info("Start rendering episodes from offline buffer")
|
||||
|
||||
threads = []
|
||||
frames = {}
|
||||
current_ep_idx = 0
|
||||
logging.info(f"Visualizing episode {current_ep_idx}")
|
||||
for _ in range(MAX_NUM_STEPS * NUM_EPISODES_TO_RENDER):
|
||||
# TODO(rcadene): make it work with bsize > 1
|
||||
ep_td = offline_buffer.sample(1)
|
||||
ep_idx = ep_td["episode"][FIRST_FRAME].item()
|
||||
|
||||
# TODO(rcaene): modify offline_buffer._sampler._sample_list or sampler to randomly sample an episode, but sequentially sample frames
|
||||
no_more_frames = offline_buffer._sampler._sample_list.numel() == 0
|
||||
new_episode = ep_idx != current_ep_idx
|
||||
|
||||
if new_episode:
|
||||
logging.info(f"Visualizing episode {current_ep_idx}")
|
||||
|
||||
for im_key in offline_buffer.image_keys:
|
||||
if new_episode or no_more_frames:
|
||||
# append last observed frames (the ones after last action taken)
|
||||
frames[im_key].append(ep_td[("next", *im_key)])
|
||||
|
||||
video_dir = Path(out_dir) / "visualize_dataset"
|
||||
video_dir.mkdir(parents=True, exist_ok=True)
|
||||
# TODO(rcadene): make fps configurable
|
||||
video_path = video_dir / f"episode_{ep_idx}.mp4"
|
||||
|
||||
assert ep_frames.min().item() >= 0
|
||||
assert ep_frames.max().item() > 1, "Not mendatory, but sanity check"
|
||||
assert ep_frames.max().item() <= 255
|
||||
ep_frames = ep_frames.type(torch.uint8)
|
||||
imageio.mimsave(video_path, ep_frames.numpy().transpose(0, 2, 3, 1), fps=cfg.fps)
|
||||
if len(offline_buffer.image_keys) > 1:
|
||||
camera = im_key[-1]
|
||||
video_path = video_dir / f"episode_{current_ep_idx}_{camera}.mp4"
|
||||
else:
|
||||
video_path = video_dir / f"episode_{current_ep_idx}.mp4"
|
||||
|
||||
# ran out of episodes
|
||||
if offline_buffer._sampler._sample_list.numel() == 0:
|
||||
thread = threading.Thread(
|
||||
target=cat_and_write_video,
|
||||
args=(str(video_path), frames[im_key], cfg.fps),
|
||||
)
|
||||
thread.start()
|
||||
threads.append(thread)
|
||||
|
||||
current_ep_idx = ep_idx
|
||||
|
||||
# reset list of frames
|
||||
del frames[im_key]
|
||||
|
||||
# append current cameras images to list of frames
|
||||
if im_key not in frames:
|
||||
frames[im_key] = []
|
||||
frames[im_key].append(ep_td[im_key])
|
||||
|
||||
if no_more_frames:
|
||||
logging.info("Ran out of frames")
|
||||
break
|
||||
|
||||
for thread in threads:
|
||||
thread.join()
|
||||
|
||||
logging.info("End of visualize_dataset")
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
visualize_dataset_cli()
|
||||
|
|
|
|||
Loading…
Reference in New Issue