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Robot_Arm/ml/export_onnx.py
T
Hark 5591adb39a ml: 第二轮审查 B-1~B-8 处置 + 一键训练控制台
- B-1 运行时投影护栏恢复 5 mm;老师轨迹按认证最小间隙 < 3 mm 剔除(stats/build_dataset,gapDrop)
- B-2 APG 端点+中点 hinge 取均值;B-3 check_r2 空匹配保护、5000×50000、分块 256,pass=false 时 prep 停下
- B-4 R7 按全部 B/C 题统计;B-5 r8 起点贴柱;B-7 pipeline r4(export_onnx --random,训练前测延迟)
- B-8 起步失败 ≤0.2%、column_gap 分块、pipefail、门禁结果先写 .tmp
- 训练控制台:ml/console.bat|sh → ml/monitor.py(开始/停止/进度/日志接口)+ monitor.html;
  pipeline.sh all 支持 FROM/TO,阶段状态写 ml/runs/pipeline.json(ml/pstate.py);训练/APG 日志加 total、t
- 文档:README 一键运行与训练控制台;审查文档追加第三轮处置;方案余量决策与 R4 时点
2026-10-18 06:40:24 +08:00

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"""导出部署包(方案 §8.4):
python -m ml.export_onnx --ckpt ml/runs/current.pt --out webapp/models/traj_policy.onnx [--fp16]
输出 traj_policy.onnx(输入 feat[B,83]、z[B,16,6];输出 act[B,16,6] 归一化增量、value[B]、sub[B,13])
与 traj_policy.meta.json(碰撞模型指纹、特征版本、维度)。导出后用 onnxruntime 与 PyTorch 对拍。"""
import argparse, json, os
import numpy as np
import torch
from ml.common.kin_torch import Kin
from ml.common.features import F_DIM, H, FEAT_VER, STEP
from ml.model.policy import build
class Wrap(torch.nn.Module):
def __init__(self, m):
super().__init__(); self.m = m
def forward(self, feat, z):
return self.m.sample(feat, z)
def main():
ap = argparse.ArgumentParser()
ap.add_argument('--ckpt'); ap.add_argument('--random', metavar='CFG', help='R4 测延迟:按配置随机初始化导出,不需要训练'); ap.add_argument('--out', default='webapp/models/traj_policy.onnx')
ap.add_argument('--fp16', action='store_true'); ap.add_argument('--opset', type=int, default=17)
a = ap.parse_args()
if a.random: # 2026-10-18:R4(浏览器 batch=8 P99)提前到训练前测,延迟只取决于结构不取决于权重
torch.manual_seed(0); ck = {'cfg': json.load(open(a.random)), 'random_init': True}
m = build(ck['cfg']); m.eval()
elif a.ckpt:
ck = torch.load(a.ckpt, map_location='cpu')
m = build(ck['cfg']); m.load_state_dict(ck['model']); m.eval()
else: raise SystemExit('需要 --ckpt 或 --random <配置>')
kin = Kin()
if ck.get('fp') and ck['fp'] != kin.fp: raise SystemExit(f"checkpoint 指纹 {ck['fp']} ≠ 当前碰撞模型 {kin.fp}:须重训")
os.makedirs(os.path.dirname(a.out) or '.', exist_ok=True)
feat, z = torch.randn(8, F_DIM), torch.randn(8, H, 6)
torch.onnx.export(Wrap(m), (feat, z), a.out, input_names=['feat', 'z'], output_names=['act', 'value', 'sub'],
dynamic_axes={'feat': {0: 'B'}, 'z': {0: 'B'}, 'act': {0: 'B'}, 'value': {0: 'B'}, 'sub': {0: 'B'}},
opset_version=a.opset, dynamo=False)
if a.fp16:
from onnxconverter_common import float16
import onnx
mo = float16.convert_float_to_float16(onnx.load(a.out), keep_io_types=True)
onnx.save(mo, a.out)
import onnxruntime as ort
s = ort.InferenceSession(a.out, providers=['CPUExecutionProvider'])
o = s.run(None, {'feat': feat.numpy(), 'z': z.numpy()})
with torch.no_grad(): t = m.sample(feat, z)
err = max(float(np.abs(o[i] - t[i].numpy()).max()) for i in range(3))
meta = {'fp': kin.fp, 'tcp0': kin.tcp0.tolist(), 'head': m.head, 'feat_ver': FEAT_VER, 'f_dim': F_DIM, 'h': H, 'step': STEP, 'fp16': a.fp16,
'ckpt': os.path.abspath(a.ckpt) if a.ckpt else None, 'random_init': bool(a.random), 'eval': ck.get('eval'), 'max_abs_err_vs_torch': err}
json.dump(meta, open(a.out.replace('.onnx', '.meta.json'), 'w'), indent=1)
print(json.dumps({'onnx': a.out, 'MB': os.path.getsize(a.out) / 1e6, 'max_abs_err_vs_torch': err}))
if __name__ == '__main__':
main()