rm65-smolvla-code / scripts /eval_task_ckpts_offline.py
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#!/usr/bin/env python3
"""Unified offline open-loop eval for RM65 SmolVLA task checkpoints.
Covers stack / usb / cleanup / place. Writes per-task trajectory plots,
metrics.json, MAE bar chart, and a cross-task dashboard.
docker exec rm65_dev2 bash -lc 'cd /home/sdznkj/zkx_ws/sendlerobot && \\
HF_HUB_OFFLINE=1 PYTHONPATH=. python3 scripts/eval_task_ckpts_offline.py'
"""
from __future__ import annotations
import argparse
import json
import sys
from pathlib import Path
import numpy as np
ROOT = Path(__file__).resolve().parents[1]
LOCAL_VLM = ROOT / "base_models/SmolVLM2-500M-Video-Instruct"
OUT_ROOT = ROOT / "outputs/diag/task_offline"
JOINT_NAMES = ["j1", "j2", "j3", "j4", "j5", "j6", "gripper"]
HEX = ["#50B4FF", "#50FFA0", "#FFC850", "#FF648C", "#B48CFF", "#78DCDC", "#F0F0F0"]
TASKS = {
"stack": {
"ckpt": ROOT / "smolvla_rm65_stack_30ep_s1000",
"dataset": ROOT / "datasets/cleaned/rm65_stacking_blocks",
"cam2_key": "observation.images.astra",
"title": "叠块 stack 30ep/s1000",
"legacy_out": ROOT / "outputs/diag/stack_30ep_offline",
},
"usb": {
"ckpt": ROOT / "smolvla_rm65_usb_100ep_s40000",
"dataset": ROOT / "datasets/cleaned/rm65_usb_insert",
"cam2_key": "observation.images.mono",
"title": "USB 插入 usb 100ep/s40000",
"legacy_out": None,
},
"cleanup": {
"ckpt": ROOT / "smolvla_rm65_cleanup_47ep_s40000",
"dataset": ROOT / "datasets/cleaned/rm65_cleanup_the_desk",
"cam2_key": "observation.images.astra",
"title": "桌面清理 cleanup 47ep/s40000",
"legacy_out": None,
},
"place": {
"ckpt": ROOT / "smolvla_rm65_place_47ep_s40000",
"dataset": ROOT / "datasets/cleaned/rm65_place_to_slot",
"cam2_key": "observation.images.astra",
"title": "槽位放置 place 47ep/s40000",
"legacy_out": None,
},
}
def _setup_cn_mpl():
import matplotlib
matplotlib.use("Agg")
import matplotlib.pyplot as plt
from matplotlib import font_manager
# Prefer SC face inside the TTC; set family by resolved name.
cjk_candidates = [
Path("/usr/share/fonts/opentype/noto/NotoSansCJK-Regular.ttc"),
Path("/usr/share/fonts/truetype/noto/NotoSansCJK-Regular.ttc"),
]
for cjk in cjk_candidates:
if not cjk.is_file():
continue
try:
font_manager.fontManager.addfont(str(cjk))
except Exception:
pass
# Index 0 of NotoSansCJK TTC is typically JP; pick SC via FontProperties.
for idx in (3, 0, 1, 2, 4):
try:
prop = font_manager.FontProperties(fname=str(cjk), index=idx)
name = prop.get_name()
if name:
plt.rcParams["font.sans-serif"] = [name, "Noto Sans CJK SC", "DejaVu Sans"]
break
except Exception:
continue
break
plt.rcParams["font.family"] = "sans-serif"
plt.rcParams["axes.unicode_minus"] = False
plt.rcParams.update(
{
"figure.facecolor": "#111111",
"axes.facecolor": "#161616",
"axes.edgecolor": "#555555",
"text.color": "#EEEEEE",
"xtick.color": "#BBBBBB",
"ytick.color": "#BBBBBB",
"axes.labelcolor": "#DDDDDD",
"legend.facecolor": "#1C1C1C",
"legend.edgecolor": "#444444",
"grid.color": "#2A2A2A",
"savefig.facecolor": "#111111",
}
)
return plt
def sanitize_config(ckpt: Path) -> None:
sys.path.insert(0, str(ROOT))
import dataclasses
from lerobot.common.policies.smolvla.configuration_smolvla import SmolVLAConfig
from lerobot.configs.policies import PreTrainedConfig
allowed = {f.name for f in dataclasses.fields(SmolVLAConfig)}
allowed |= {f.name for f in dataclasses.fields(PreTrainedConfig)}
allowed.add("type")
cfg_path = ckpt / "config.json"
cfg = json.loads(cfg_path.read_text())
dropped = sorted(k for k in cfg if k not in allowed)
for k in dropped:
cfg.pop(k, None)
if LOCAL_VLM.is_dir():
cfg["vlm_model_name"] = str(LOCAL_VLM)
cfg_path.write_text(json.dumps(cfg, indent=4) + "\n")
if dropped:
print("dropped config keys:", dropped)
def load_episode(ds: Path, ep: int) -> dict:
import pandas as pd
info = json.loads((ds / "meta/info.json").read_text())
tasks = {}
for line in (ds / "meta/tasks.jsonl").read_text().splitlines():
if line.strip():
row = json.loads(line)
tasks[int(row["task_index"])] = row["task"]
chunk = ep // int(info.get("chunks_size", 1000))
pq = ds / info["data_path"].format(episode_chunk=chunk, episode_index=ep)
df = pd.read_parquet(pq)
state = np.stack(df["observation.state"].to_numpy()).astype(np.float32)
action = np.stack(df["action"].to_numpy()).astype(np.float32)
task_index = df["task_index"].to_numpy().astype(np.int64)
return {
"state": state,
"action": action,
"task_index": task_index,
"tasks": tasks,
"info": info,
"n": len(df),
"chunk": chunk,
}
def read_video_frames(path: Path, indices: list[int]) -> dict[int, np.ndarray]:
import av
want = set(int(i) for i in indices)
out: dict[int, np.ndarray] = {}
container = av.open(str(path))
for i, frame in enumerate(container.decode(video=0)):
if i in want:
out[i] = frame.to_ndarray(format="rgb24")
if len(out) == len(want):
break
container.close()
missing = want - set(out)
if missing:
raise FileNotFoundError(f"{path} missing frames {sorted(missing)[:8]}")
return out
def rgb_tensor(img: np.ndarray, torch):
t = torch.from_numpy(img).permute(2, 0, 1).float() / 255.0
return t.unsqueeze(0)
def infer_episode(policy, ds: Path, cam2_key: str, ep: int, device) -> dict:
import torch
data = load_episode(ds, ep)
info = data["info"]
n = data["n"]
chunk_id = data["chunk"]
step = int(policy.config.n_action_steps)
starts = list(range(0, n, step))
relative = bool(getattr(policy.config, "use_relative_actions", False))
front = read_video_frames(
ds
/ info["video_path"].format(
episode_chunk=chunk_id, episode_index=ep, video_key="observation.images.front"
),
starts,
)
cam2 = read_video_frames(
ds
/ info["video_path"].format(episode_chunk=chunk_id, episode_index=ep, video_key=cam2_key),
starts,
)
policy.reset()
pred_abs = np.full((n, 7), np.nan, dtype=np.float32)
with torch.no_grad():
for fi, t0 in enumerate(starts):
state_np = data["state"][t0, :7].copy()
task = data["tasks"][int(data["task_index"][t0])]
batch = {
"task": task,
"observation.state": torch.from_numpy(state_np).unsqueeze(0).to(device),
"observation.images.camera1": rgb_tensor(front[t0], torch).to(device),
"observation.images.camera2": rgb_tensor(cam2[t0], torch).to(device),
}
pred = policy.predict_action_chunk(batch)[0].detach().float().cpu().numpy()
take = pred[: min(step, n - t0)].copy()
# Relative ckpts: policy already returns absolute cmds (q+Δq + grip hyst).
# Non-relative: policy may apply grip hyst but leaves joints as Δq.
if not relative:
take[:, :6] = state_np[:6] + take[:, :6]
pred_abs[t0 : t0 + take.shape[0]] = take
if fi % 5 == 0 or fi + 1 == len(starts):
print(
f" ep{ep:03d} {fi + 1}/{len(starts)} f={t0} "
f"|dq|={np.abs(take[:, :6] - state_np[:6]).mean():.3f} "
f"grip={take[0, 6]:.0f}",
flush=True,
)
del batch
if device.type == "cuda" and fi % 8 == 0:
torch.cuda.empty_cache()
data["pred"] = pred_abs
data["episode"] = ep
data["relative"] = relative
return data
def episode_metrics(data: dict) -> dict:
st = data["state"][:, :7]
ac = data["action"][:, :7]
pr = data["pred"]
valid = np.isfinite(pr[:, 0])
joint_mae = float(np.abs(pr[valid, :6] - ac[valid, :6]).mean())
joint_mae_vs_enc = float(np.abs(pr[valid, :6] - st[valid, :6]).mean())
per_joint = {
JOINT_NAMES[j]: float(np.abs(pr[valid, j] - ac[valid, j]).mean()) for j in range(6)
}
grip_acc = float(np.mean(np.abs(pr[valid, 6] - ac[valid, 6]) < 0.5))
return {
"episode": int(data["episode"]),
"frames": int(data["n"]),
"valid_frames": int(valid.sum()),
"joint_mae_vs_demo_deg": joint_mae,
"joint_mae_vs_encoder_deg": joint_mae_vs_enc,
"per_joint_mae_vs_demo": per_joint,
"gripper_agree": grip_acc,
"use_relative_actions": bool(data.get("relative", False)),
}
def plot_episode(data: dict, out: Path, title: str) -> Path:
plt = _setup_cn_mpl()
st = data["state"][:, :7]
ac = data["action"][:, :7]
pr = data["pred"]
n = data["n"]
ep = data["episode"]
x = np.arange(n)
fig, axes = plt.subplots(7, 1, figsize=(16.5, 12.4), sharex=True, gridspec_kw={"hspace": 0.08})
fig.subplots_adjust(top=0.88, bottom=0.07, left=0.08, right=0.98)
fig.suptitle(f"{title} open-loop ep{ep:03d}", fontsize=17, fontweight="bold", y=0.995)
mode = "relative→abs (policy)" if data.get("relative") else "Δq + q_now (eval)"
fig.text(
0.01,
0.965,
f"solid=encoder dashed=demo action orange=open-loop VLA ({mode})\n"
"infer every n_action_steps frames, execute first n_action_steps of each chunk",
fontsize=11,
color="#C8C8C8",
va="top",
)
legend_done = False
for j, ax in enumerate(axes):
c = HEX[j]
(h_line,) = ax.plot(x, ac[:, j], ls="--", lw=1.2, color=c, alpha=0.55, zorder=2)
(s_line,) = ax.plot(x, st[:, j], ls="-", lw=2.0, color=c, zorder=3)
(vla,) = ax.plot(x, pr[:, j], color="#FF9F1C", lw=1.8, zorder=4)
ax.set_ylabel(JOINT_NAMES[j], fontsize=12, color=c, rotation=0, ha="right", va="center", labelpad=14)
ax.grid(True, axis="x", alpha=0.25)
if not legend_done:
ax.legend([s_line, h_line, vla], ["encoder", "demo", "open-loop VLA"], loc="upper right", fontsize=10)
legend_done = True
axes[-1].set_xlabel("frame (20 Hz)", fontsize=12)
axes[-1].set_xlim(0, n - 1)
m = episode_metrics(data)
fig.text(
0.01,
0.008,
f"joint |pred-demo| mean {m['joint_mae_vs_demo_deg']:.2f} deg "
f"gripper agree {m['gripper_agree']:.0%} frames {n}",
fontsize=10.5,
color="#D2C878",
)
out.mkdir(parents=True, exist_ok=True)
path = out / f"ep{ep:03d}_trajectory.png"
fig.savefig(path, dpi=130, bbox_inches="tight", pad_inches=0.22)
plt.close(fig)
print("wrote", path)
return path
def plot_task_mae_bars(metrics: list[dict], out: Path, title: str) -> Path:
plt = _setup_cn_mpl()
eps = [f"ep{m['episode']:03d}" for m in metrics]
maes = [m["joint_mae_vs_demo_deg"] for m in metrics]
grips = [m["gripper_agree"] * 100 for m in metrics]
fig, axes = plt.subplots(1, 2, figsize=(11.5, 4.2))
fig.suptitle(f"{title} — offline metrics", fontsize=14, fontweight="bold")
axes[0].bar(eps, maes, color="#50B4FF")
axes[0].set_ylabel("joint MAE vs demo (°)")
axes[0].grid(True, axis="y", alpha=0.3)
axes[1].bar(eps, grips, color="#50FFA0")
axes[1].set_ylabel("gripper agree (%)")
axes[1].set_ylim(0, 105)
axes[1].grid(True, axis="y", alpha=0.3)
path = out / "metrics_bars.png"
fig.savefig(path, dpi=140, bbox_inches="tight", pad_inches=0.2)
plt.close(fig)
print("wrote", path)
return path
def plot_cross_task_summary(all_metrics: dict[str, list[dict]], out: Path) -> Path:
plt = _setup_cn_mpl()
names = list(all_metrics.keys())
means = [float(np.mean([m["joint_mae_vs_demo_deg"] for m in all_metrics[k]])) for k in names]
grips = [float(np.mean([m["gripper_agree"] for m in all_metrics[k]])) * 100 for k in names]
fig, axes = plt.subplots(1, 2, figsize=(12.5, 4.4))
fig.suptitle("RM65 SmolVLA — 四任务离线开环汇总", fontsize=15, fontweight="bold")
axes[0].bar(names, means, color=["#50B4FF", "#FFC850", "#B48CFF", "#FF648C"][: len(names)])
axes[0].set_ylabel("mean joint MAE vs demo (°)")
axes[0].grid(True, axis="y", alpha=0.3)
axes[1].bar(names, grips, color=["#50FFA0", "#78DCDC", "#50B4FF", "#FFC850"][: len(names)])
axes[1].set_ylabel("mean gripper agree (%)")
axes[1].set_ylim(0, 105)
axes[1].grid(True, axis="y", alpha=0.3)
path = out / "cross_task_mae.png"
fig.savefig(path, dpi=150, bbox_inches="tight", pad_inches=0.22)
plt.close(fig)
print("wrote", path)
return path
def write_task_index(out: Path, title: str, paths: list[Path], metrics: list[dict]) -> None:
items = "".join(f"<li><a href='{p.name}'>{p.name}</a></li>" for p in paths)
rows = "".join(
"<tr>"
f"<td>ep{m['episode']:03d}</td>"
f"<td>{m['frames']}</td>"
f"<td>{m['joint_mae_vs_demo_deg']:.3f}</td>"
f"<td>{m['gripper_agree']:.0%}</td>"
"</tr>"
for m in metrics
)
(out / "index.html").write_text(
"<html><body style='background:#111;color:#eee;font-family:sans-serif;padding:16px'>"
f"<h3>{title}</h3>"
"<table border='1' cellpadding='6' style='border-collapse:collapse;margin:12px 0'>"
"<tr><th>ep</th><th>frames</th><th>joint MAE°</th><th>grip agree</th></tr>"
+ rows
+ "</table><ul>"
+ items
+ "</ul></body></html>\n",
encoding="utf-8",
)
def write_dashboard(all_metrics: dict[str, list[dict]], coverage: dict) -> Path:
out = OUT_ROOT
out.mkdir(parents=True, exist_ok=True)
plot_cross_task_summary(all_metrics, out)
rows = []
for name, mets in all_metrics.items():
mean_mae = float(np.mean([m["joint_mae_vs_demo_deg"] for m in mets]))
mean_grip = float(np.mean([m["gripper_agree"] for m in mets]))
cov = coverage.get(name, {})
rows.append(
"<tr>"
f"<td><b>{name}</b></td>"
f"<td>{cov.get('ckpt','')}</td>"
f"<td>{'✓' if cov.get('traj') else '✗'}</td>"
f"<td>{'✓' if cov.get('attn') else '✗'}</td>"
f"<td>{'✓' if cov.get('metrics') else '✗'}</td>"
f"<td>{mean_mae:.2f}</td>"
f"<td>{mean_grip:.0%}</td>"
f"<td><a href='{name}/index.html'>{name}/</a></td>"
"</tr>"
)
summary = {
"tasks": {
k: {
"episodes": mets,
"mean_joint_mae_vs_demo_deg": float(np.mean([m["joint_mae_vs_demo_deg"] for m in mets])),
"mean_gripper_agree": float(np.mean([m["gripper_agree"] for m in mets])),
}
for k, mets in all_metrics.items()
},
"coverage": coverage,
}
(out / "summary.json").write_text(json.dumps(summary, indent=2, ensure_ascii=False) + "\n")
html = out / "index.html"
html.write_text(
"<html><head><meta charset='utf-8'><title>RM65 SmolVLA task offline eval</title></head>"
"<body style='background:#111;color:#eee;font-family:sans-serif;padding:20px;max-width:1100px'>"
"<h2>RM65 SmolVLA 四任务离线开环评测汇总</h2>"
"<p>open-loop:按 n_action_steps 切 chunk,与 cleaned demo 关节/夹爪对比。"
"注意力图见 <code>outputs/diag/smolvla_attn_*</code>。</p>"
"<p><img src='cross_task_mae.png' style='max-width:100%;border:1px solid #333'/></p>"
"<table border='1' cellpadding='8' style='border-collapse:collapse;width:100%'>"
"<tr><th>任务</th><th>ckpt</th><th>轨迹图</th><th>注意力</th><th>指标</th>"
"<th>mean MAE°</th><th>grip</th><th>目录</th></tr>"
+ "".join(rows)
+ "</table>"
"<h3>覆盖说明</h3>"
"<ul>"
"<li>stack:既有 stack_30ep_offline + attn_stack30_f074/f216</li>"
"<li>usb / cleanup / place:本脚本新绘轨迹 + metrics;注意力由 smolvla_diag_visualize 补</li>"
"</ul>"
"</body></html>\n",
encoding="utf-8",
)
print("dashboard", html)
return html
def parse_args():
p = argparse.ArgumentParser()
p.add_argument("--tasks", type=str, default="usb,cleanup,place,stack")
p.add_argument("--episodes", type=str, default="0,1,2")
p.add_argument("--device", type=str, default="cuda")
p.add_argument("--skip-existing", action="store_true")
return p.parse_args()
def main() -> None:
import os
os.environ["HF_HUB_OFFLINE"] = "1"
os.environ["TRANSFORMERS_OFFLINE"] = "1"
os.environ["HF_DATASETS_OFFLINE"] = "1"
sys.path.insert(0, str(ROOT))
import torch
from lerobot.common.policies.smolvla.modeling_smolvla import SmolVLAPolicy
from lerobot.configs.policies import PreTrainedConfig
from smolvla_diag_visualize import load_stats
args = parse_args()
task_names = [t.strip() for t in args.tasks.split(",") if t.strip()]
episodes = [int(x) for x in args.episodes.split(",") if x.strip()]
device = torch.device(args.device if torch.cuda.is_available() or args.device == "cpu" else "cpu")
if args.device == "cuda" and not torch.cuda.is_available():
device = torch.device("cpu")
print("WARN: cuda unavailable, using cpu")
all_metrics: dict[str, list[dict]] = {}
coverage: dict[str, dict] = {}
for name in task_names:
if name not in TASKS:
raise SystemExit(f"unknown task {name}; choose from {list(TASKS)}")
meta = TASKS[name]
ckpt: Path = meta["ckpt"]
ds: Path = meta["dataset"]
out = OUT_ROOT / name
out.mkdir(parents=True, exist_ok=True)
print(f"\n==== {name} ckpt={ckpt.name} ds={ds.name} ====", flush=True)
# Reuse legacy stack plots if present and skip-existing
legacy = meta.get("legacy_out")
if (
args.skip_existing
and legacy
and all((legacy / f"ep{ep:03d}_trajectory.png").is_file() for ep in episodes)
and (out / "metrics.json").is_file()
):
mets = json.loads((out / "metrics.json").read_text())
all_metrics[name] = mets
coverage[name] = {
"ckpt": ckpt.name,
"traj": True,
"attn": any(
(ROOT / "outputs/diag" / d).is_dir()
for d in ["smolvla_attn_stack30_f074", "smolvla_attn_stack30_f216"]
),
"metrics": True,
}
print("skip existing", name)
continue
if not ckpt.is_dir() or not (ckpt / "model.safetensors").is_file():
raise FileNotFoundError(f"missing ckpt {ckpt}")
if not ds.is_dir():
raise FileNotFoundError(f"missing dataset {ds}")
sanitize_config(ckpt)
config = PreTrainedConfig.from_pretrained(str(ckpt))
stats = load_stats(ckpt, config)
policy = SmolVLAPolicy.from_pretrained(str(ckpt), config=config, dataset_stats=stats)
policy.to(device)
policy.eval()
print(
f"device={device} chunk={policy.config.chunk_size} "
f"n_action_steps={policy.config.n_action_steps} "
f"relative={getattr(policy.config, 'use_relative_actions', False)}",
flush=True,
)
paths: list[Path] = []
mets: list[dict] = []
for ep in episodes:
traj_path = out / f"ep{ep:03d}_trajectory.png"
npy_path = out / f"ep{ep:03d}_pred.npy"
if args.skip_existing and traj_path.is_file() and npy_path.is_file():
print(f"skip existing ep{ep:03d}")
# still need metrics — recompute from npy if possible
data = load_episode(ds, ep)
data["pred"] = np.load(npy_path)
data["episode"] = ep
data["relative"] = bool(getattr(policy.config, "use_relative_actions", False))
m = episode_metrics(data)
mets.append(m)
paths.append(traj_path)
continue
data = infer_episode(policy, ds, meta["cam2_key"], ep, device)
np.save(npy_path, data["pred"])
paths.append(plot_episode(data, out, meta["title"]))
m = episode_metrics(data)
mets.append(m)
print(
f" metrics ep{ep:03d}: MAE={m['joint_mae_vs_demo_deg']:.2f}° "
f"grip={m['gripper_agree']:.0%}",
flush=True,
)
del data
if device.type == "cuda":
torch.cuda.empty_cache()
paths.append(plot_task_mae_bars(mets, out, meta["title"]))
(out / "metrics.json").write_text(json.dumps(mets, indent=2) + "\n")
write_task_index(out, meta["title"], paths, mets)
# symlink/copy legacy stack notice
if legacy and legacy.is_dir():
(out / "NOTE_legacy.txt").write_text(
f"Earlier plots also at {legacy}\n", encoding="utf-8"
)
all_metrics[name] = mets
attn_ok = False
if name == "stack":
attn_ok = (ROOT / "outputs/diag/smolvla_attn_stack30_f074").is_dir()
else:
attn_ok = (ROOT / f"outputs/diag/smolvla_attn_{name}_f074").is_dir()
coverage[name] = {
"ckpt": ckpt.name,
"traj": True,
"attn": attn_ok,
"metrics": True,
}
del policy
if device.type == "cuda":
torch.cuda.empty_cache()
write_dashboard(all_metrics, coverage)
print("DONE")
if __name__ == "__main__":
main()