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infra: mecka 6D / keypoint recipes, 300M models, defaults, and the rollout revert - #640

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@RyanPCo RyanPCo commented Sep 14, 2026 •

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This PR is the tip of an eight-branch split. The 111-file commit that used to live
here was broken up so each branch carries one feature. #640 keeps its original head branch
(ryanco/infra-port) and its review history, but its base is ryanco/eval-metrics-train-viz
and its diff is only the last slice. Review comments above this line may point at code that
has moved to one of:

PR Branch Carries
#653 (merged) rot6d-core 6D rotation primitives, bimanual layout tables, shared norm helpers (no behavior change)
#654 (merged) embodiment-6d-modes PI goes 6D-only; Eva/Human *_6d modes; vendor embodiment aliasing
#655 (merged) mecka-left-wrist-fix the double-mirrored LEFT wrist frame, converter + RotateLocalFrame for existing zarrs
#656 hand-keypoints-144d the 144-D wrist-first hand-keypoint action as the human default
#657 norm-stats-pooling NORM_MIN_RANGE degenerate-channel guard, pool_horizon, the precompute script
#658 dataset-robustness bounds-check channels, sampler widening, require_annotations
#659 eval-metrics-train-viz action_metrics, train-split viz head, viz cadence, reverse-KL removal

The stack was rebased onto current main. The single-operator flagship config
(mecka_fold_flagship_topop_hpt_6d) is kept out of this PR.

What is left in this PR

Recipes, models and defaults

  • data configs: mecka_all_6d, mecka_fold_freeform{,_opsplit}_6d (wrist frame; cam frame is a
    transform_list.mode=cartesian_6d override, and a guard test rejects data configs that only
    swap the mode), mecka_fold_flagship_opsplit_hpt_6d, mecka_fold_freeform_opsplit_hpt_keypoints,
    and the composed recipes train_zarr_mecka_flagship_6d_hpt / train_zarr_mecka_kp_wrist_hpt.
  • models: the 300M HPT pair hpt_bc_mecka_6d_300M / hpt_bc_keypoints_wrist_300M,
    pi0.5_bc_mecka_6d, and constant-LR-after-warmup on pi0.5_base. The 6D PI converters are
    renamed from *CartesianEuler to *Cartesian6D to match what they pack.
  • defaults: ddp_pi inference_mode=false + validation every 20 epochs, checkpoints every 50
    on train-epoch end; the HPT Qwen stem loads the local snapshot when offline.
  • scripts: viz_mecka_episode.py, viz_eva_episode.py, with egomimic/utils/paths.py reading
    the dataset dir from the hydra paths config.

Rollout revert

trainHydra saves each train dataset's transform_list.mode with the checkpoint config.
rollout.py reads the Eva mode from there and maps predictions back to camera-frame ypr via
Eva.get_revert_transform_list. Checkpoints without a recorded mode keep the old inputs and no
revert. Not tested on hardware.

Testing

  • Unit suite and per-branch counts below are from before the rebase onto current main:
    636 passed, 2 skipped, 0 failed at this branch; every branch of the split green on its own
    suite, in order 216 / 203 / 460 / 467 / 487 / 496 / 634 / 636.
  • Single-episode overfits for HPT and PI, on eva and mecka, all exit 0 — run on the pre-split
    commit, so they cover the stack as a whole rather than this branch alone. Final epoch:
    PI eva xyz MSE 9.3e-5 / rotation 3.2°; PI mecka keypoint error 24.9 mm; HPT eva rotation 21.6°.
  • Per-timestep vs pooled norm stats over the same overfits: per-timestep is better early in the
    chunk on all four; pooled is equal or better late.
  • rollout.py revert: not tested on hardware.

🤖 Generated with Claude Code

https://claude.ai/code/session_01HjCQBqQCr2igFEMR7yUovw

RyanPCo commented Sep 15, 2026 •

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@RyanPCo
RyanPCo force-pushed the ryanco/eval-metrics-train-viz branch from 38aaa92 to e7eebed Compare October 12, 2026 23:19
@RyanPCo RyanPCo mentioned this pull request Oct 19, 2026
RyanPCo added a commit that referenced this pull request Oct 19, 2026
… helpers (#653)

> Branch 1 of 8 in the split of #640, which is the tip of the stack and carries the map of all eight.
> Unit suite on this branch: **216 passed, 0 failed**.

Groundwork for the 6D action pipeline, with no behavior change anywhere.

pose_utils gains _ypr_to_rot6d / _rot6d_to_ypr (numpy, ZYX euler <-> the first
two columns of the rotation matrix, Gram-Schmidt on the way back so a
non-orthonormal model prediction still yields a proper rotation), matching the
column convention of the torch helpers in action_utils. BIMANUAL_CARTESIAN_LAYOUTS
maps a vector width (12/14 ypr, 18/20 6D) to its xyz / rot / grip channel
indices; the norm-stat bounds check and the eval metrics both consume it to know
which channel is which.

action_chunk_transforms gains CartesianYPRToRot6D / CartesianRot6DToYPR, which
convert a bimanual cartesian vector between xyz+ypr(+gripper) and
xyz+rot6d(+gripper) while preserving the numpy/tensor type of the input.

action_utils extracts the normalization math that was inlined in
MultiDataset._apply_norm_one / ._apply_unnorm_one into module-level
_apply_norm_one / _apply_unnorm_one, over a shared _norm_center_scale. _eps
preserves the historical denominators exactly (std + 1e-6 for zscore,
(hi - lo) + 1e-6 for minmax/quantile, i.e. half_range + 0.5e-6), so the three
norm modes are numerically identical to before; MultiDataset now delegates.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>


🤖 Generated with [Claude Code](https://claude.com/claude-code)
RyanPCo added a commit that referenced this pull request Oct 19, 2026
…#654)

> Branch 2 of 8 in the split of #640, which is the tip of the stack and carries the map of all eight.
> Unit suite on this branch: **203 passed, 0 failed**.

The pi0.5 converters stop doing rotation math. Actions now reach the algo
already normalized and already in their model-native layout, so to32_norm_6d /
from32_norm_6d are a pure rearrange into (and out of) openpi's 32-slot block
layout: RobotBimanual's native 20D [L xyz 6d g | R xyz 6d g] IS that layout and
only needs padding, HumanBimanual's 18D inserts a zero gripper slot per arm.
BaseActionConverter raises on both, so an unregistered embodiment fails loudly.
The four single-arm converters (RobotLeft/Right, HumanLeft/Right) are deleted
along with PI._extract_xyz, which existed for the cam-frame MSE. PI's loss
reduction and sample post-processing move into _reduce_loss and
_postprocess_sampled_actions.

The ypr->6D conversion is now a data transform. Eva gains cartesian_6d and
cartesian_wristframe_6d, Human the same pair, each 6D-encoding the action AND
the proprio ee_pose: normalized YPR saturates yaw/roll at +-pi (wraparound), so
per-dim normalization is only meaningful on the continuous representation.
get_revert_transform_list / the _build_*_revert_6d{,_wristframe}_ lists map a
prediction batch back to cam-frame ypr for the viz overlay.

Eva defaults to cartesian_wristframe_6d (eva, cotrain_pi_base, industry_eva_pi;
cotrain_pi_lang_wrist now composes the same as cotrain_pi_lang). Human data
configs move to cartesian_6d with pad_proprio_gripper, which pads the proprio
ee_pose 18 -> 20 (zero grip slots at 9/19) so the pi0.5 State: prompt bins line
up positionally with the robot 20D layout; UnpadGripperZeros inverts it in the
revert lists. HPT dims follow: eva 14 -> 20, human 12 -> proprio 20 / action 18.

Also here, because they are the same widening: SplitKeys rejects a layout whose
widths do not sum to the input (an evaluator revert list built for 12-dim ypr
fed an 18/20-dim 6D batch used to slice silently), and vendor-tagged human
embodiment names (MECKA_/SCALE_/ARIA_/LIGHTWHEEL_*) alias onto HUMAN_* through
canonical_embodiment_name, so pins and embodiment checks accept the legacy
metadata. Robot (EVA_*) names are never aliased.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>


🤖 Generated with [Claude Code](https://claude.com/claude-code)
RyanPCo added a commit that referenced this pull request Oct 19, 2026
… zarrs (#655)

> Branch 3 of 8 in the split of #640, which is the tip of the stack and carries the map of all eight.
> Unit suite on this branch: **460 passed, 0 failed**.

compute_hand_pose_xyzquat built the palm normal as cross(thumb_dir, pinky_dir).
Thumb and pinky are anatomically swapped between hands, so that cross product
already mirrors chirality for free; applying rot_left on top of it flipped x/y
a second time and landed the LEFT hand on the RIGHT hand's spatial convention.
Both hands now use the same rot_right relabel.

Reconverting every mecka zarr would be the obvious fix, so this avoids it:
rot_left == rot_right @ diag(-1, -1, 1), which makes right-multiplying the
stored left pose by Rz(180 deg) exactly equivalent to reconverting with
rot_right. RotateLocalFrame does that right-multiply (R_new = R_old @ R_fix),
relabelling the pose's own axes without moving its origin, on (7,) poses and
(T, 7) chunks alike, and leaves zero-norm quaternions alone because those mark
padded frames.

Human.get_transform_list(fix_mecka_left_wrist=True) prepends it to the raw LEFT
pose keys before any frame math: ee_pose in the cartesian modes, wrist_pose in
the keypoints modes, since the converter wrote the same rotation into both.
data/mecka.yaml opts in; aria and scale must not, because they run different
converters, and neither must mecka data reconverted after this commit, which
would double-flip.

test_wrist6d_roundtrip runs the real transform lists on synthetic world-frame
poses, parametrized over the flag, and compares every stage against plain
numpy/scipy SE(3) math that shares no code with the pipeline.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>


🤖 Generated with [Claude Code](https://claude.com/claude-code)
@RyanPCo
RyanPCo force-pushed the ryanco/eval-metrics-train-viz branch from e7eebed to ce8666e Compare October 19, 2026 19:37
@RyanPCo
RyanPCo force-pushed the ryanco/eval-metrics-train-viz branch from ce8666e to 2ca1d41 Compare October 30, 2026 18:27

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Automated adversarial review (read-only; findings were checked by a second skeptical pass before posting): 1 high, 2 medium, 3 low, 5 nit.



class RobotBimanualCartesianEuler(BaseActionConverter):
class RobotBimanualCartesian6D(BaseActionConverter):

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high (backward-compat): This rename breaks loading of every pi0.5 checkpoint trained from main. Their saved config_tree has _target_: egomimic.utils.action_utils.RobotBimanualCartesianEuler (and HumanBimanualCartesianEuler), and ModelWrapper re-instantiates it, so rollout, eval and ckpt resume fail with 'Error locating target'. The class bodies are unchanged, so keep the old names as aliases (RobotBimanualCartesianEuler = RobotBimanualCartesian6D, likewise for Human) with a one-line comment that saved checkpoints reference them.

Comment thread egomimic/robot/rollout.py Outdated
)
mode, source = self.LEGACY_TRANSFORM_MODE, "14-D action width"
print(f"[rollout] Eva transform_list mode ({source}): {mode}")
return None if mode == self.LEGACY_TRANSFORM_MODE else mode

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medium (correctness): return None if mode == self.LEGACY_TRANSFORM_MODE also catches an explicit --transform-mode cartesian_wristframe_ypr. With it, revert_transform_list ends up None and wrist-relative xyz/ypr predictions go to cam_frame_to_base_frame as if they were camera-frame poses. Someone with an old wrist-frame ypr checkpoint is exactly who would pass this flag. Only the unrecorded 14-D fallback branch should return the legacy no-revert sentinel; an explicitly given mode should always build get_revert_transform_list(mode). A test of the init wiring, not just _checkpoint_transform_mode, would catch this.



class RobotBimanualCartesianEuler(BaseActionConverter):
class RobotBimanualCartesian6D(BaseActionConverter):

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medium (compatibility): The rename breaks loading of every checkpoint whose saved config_tree names egomimic.utils.action_utils.RobotBimanualCartesianEuler or HumanBimanualCartesianEuler, because ModelWrapper re-instantiates from that tree. That covers the 6D Pi runs already trained on this stack. Keep aliases (RobotBimanualCartesianEuler = RobotBimanualCartesian6D, HumanBimanualCartesianEuler = HumanBimanualCartesian6D) with a one-line comment saying they exist so saved configs still load.

# constlr_5e5 ablation whose keypoint arm fit best).
_target_: egomimic.pl_utils.pl_model.ModelWrapper
robomimic_model:
_target_: egomimic.algo.hpt.HPT

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low (duplication): This file is a copy of hpt_bc_mecka_6d_300M.yaml (trunk, head, shared stems, encoder, augs, optimizer) apart from dims, ac_keys, 6dof and the human stem. Make it defaults: [hpt_bc_mecka_6d_300M, _self_] and override only those keys (null state_ee_pose, add state_keypoints). A width change then lands in one file.

human_bimanual:
_target_: egomimic.rldb.zarr.zarr_dataset_multi.MultiDataset._from_resolver
resolver:
_target_: egomimic.rldb.zarr.zarr_dataset_multi.S3EpisodeResolver

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low (duplication): mecka_all_6d, mecka_fold_freeform_6d, mecka_fold_freeform_opsplit_6d and mecka_fold_flagship_opsplit_hpt_6d each repeat the same S3EpisodeResolver, cartesian keymap, cartesian_wristframe_6d transform (stride 1, fix_left_wrist_convention, pad_proprio_gripper), loader params and knob comment. Consider a shared base (e.g. data/mecka_6d_base.yaml) that each slice inherits, setting only filters, split mode and the operator list. Retiring fix_left_wrist_convention would then be a single edit.

try:
from PIL import Image, ImageDraw
except Exception:
Image = None

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nit (dead-code): PIL is not optional here: decode() imports it, and line 384 calls Image.fromarray without a check. Import from PIL import Image, ImageDraw at the top and drop the try/except and the if Image branches.

eps: 1e-8
weight_decay: 0.0

# Constant LR after warmup (matches the remote pi0.5 training stack). The

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nit (comments): This comment describes the previous cosine schedule, which belongs in the commit message. Reduce it to the reason, e.g. # Constant after warmup: a fixed-horizon cosine decays to 0 regardless of run length.

# is a CLI override, not a data config; one data config per dataset slice.
raw = yaml.safe_load((DATA_DIR / f"{name}.yaml").read_text(encoding="utf-8"))
body = {k: v for k, v in (raw or {}).items() if k != "defaults"}
if not raw.get("defaults") or not body:

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nit (test-quality): (raw or {}) guards the comprehension, but raw.get("defaults") on this line raises AttributeError for an empty YAML. Use raw = yaml.safe_load(...) or {} once and drop the inline guard.

assert unseen.filters.filter_lambdas[-1].endswith(f" in {ops}")


def test_bounds_quantiles_include_the_observed_extremes():

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nit (test-quality): These bounds and packed-width loss tests now sit under the 'train_viz second loader' header but don't test it, and the module docstring no longer mentions the packed-width loss reduction that test_pi_loss_is_reduced_over_the_packed_width still covers. Leave them where they were (or give them their own header) so the diff stays limited to the rename, and restore the docstring mention.

Comment thread tests/fixtures/recipes.py Outdated
emb,
(f"+data.train_datasets.{emb}.resolver.key_map.annotation_key=annotations",),
)
# data/eva.yaml already emits the continuous-6D (wrist-frame) layout Pi

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nit (comments): This rewrite doesn't change behaviour, and the comment describes data/eva.yaml's 6D layout, which _pi doesn't touch. Revert to the original tuple form or drop the comment.

RyanPCo and others added 3 commits October 30, 2026 18:15
The fold recipes this stack was built for: mecka_all_6d, mecka_fold_freeform_6d
and its opsplit variant (wrist frame; cam frame is a transform_list.mode
override rather than a near-duplicate config, and test_data_configs_compose
rejects any data config that differs from its parent only in that mode),
mecka_fold_flagship_opsplit_hpt_6d and
mecka_fold_freeform_opsplit_hpt_keypoints, plus the two 300M HPT models and
pi0.5_bc_mecka_6d.

Defaults, each for a failure seen in a run:
- checkpoints every 50 epochs, saved on train-epoch end. With
  check_val_every_n_epoch > 1 the validation-end hook only fires on val epochs,
  so every_n_epochs silently skipped the others.
- ddp_pi inference_mode: false. The compiled pi sampler does in-place setup on
  its static buffers during cudagraph capture, which is illegal on inference
  tensors ("Inplace update to inference tensor outside InferenceMode"); no_grad
  is equivalent for eval and creates none.
- ddp_pi validates every 20 epochs instead of 200, and eval_hpt renders viz
  every 200.
- pi0.5 gets a constant LR after warmup. The cosine schedule decayed to 0 over
  num_training_steps=60000, so runs past ~60k steps trained at ~0 lr and
  shorter runs never saw the configured lr for most of training.
- The Qwen stem resolves a repo id to its cached snapshot directory when
  offline: transformers >= 4.57 probes the Hub while loading a tokenizer by
  repo id even under HF_HUB_OFFLINE, which raises on compute nodes with no
  internet. Loading from the directory skips the probe. Offline is read the
  way huggingface_hub reads it -- 1 / ON / YES / TRUE in any case, from the
  live environment -- rather than by matching the literal "1", which left
  HF_HUB_OFFLINE=true hitting the probe the helper exists to avoid.

viz_mecka_episode.py and viz_eva_episode.py render an episode straight from
its zarr, which is how the left-wrist convention bug was found. Both take the
dataset dir from egomimic.utils.paths.default_dataset_dir(), which reads
paths/default.yaml, instead of each re-stating the cluster path.

HumanBimanualCartesianEuler / RobotBimanualCartesianEuler are renamed to
HumanBimanualCartesian6D / RobotBimanualCartesian6D: both pack xyz + rot6d and
have not touched an Euler angle since the 6D conversion, and this is the commit
that makes the human one the converter for a new default recipe.

Also prunes unit tests whose assertions another test already makes on the same
code path, and parametrized cases that repeat a stricter test's compose call.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
…evert its outputs

NOT TESTED ON HARDWARE.

The rollout hard-coded cartesian_wristframe_ypr inputs and used the policy's
predictions as-is. Now that eva checkpoints can be trained in several modes
(cartesian, cartesian_6d, cartesian_wristframe_6d), that silently feeds a model
the wrong inputs and sends the wrong frame to the arms.

It now reads data.train_datasets.<name>.resolver.transform_list.mode off the
checkpoint's own config, builds the matching input pipeline, and maps
predictions back to camera-frame xyz+ypr+gripper through
Eva.get_revert_transform_list. The revert needs the un-normalized proprio,
which process_batch_for_training normalizes in place, so the raw ee_pose is
cloned before that call.

A checkpoint whose config records no mode keeps exactly the old behaviour --
legacy inputs, no revert -- and says so loudly, so this cannot silently change
what an existing checkpoint does.

test_eva_revert_for_rollout_recovers_camframe_ypr covers the revert math by
cross-checking the wrist-frame revert against the cam-frame cartesian_6d one,
which never enters the wrist frame -- so the frame composition is genuinely
validated, though not against independently written SE(3) math. The hardware
path itself still needs a real rollout.

Both get_transform_list calls here pass allow_legacy_rotation=True: this is
inference, and a checkpoint that predates the 6D conversion records exactly
the modes the training-time guard rejects.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
Claude-Session: https://claude.ai/code/session_01VBmhpVy7ZcMtsBJWh38cJp
…eckpoint

The rollout looked for data.train_datasets.<eva>.resolver.transform_list.mode
in the checkpoint's config tree, but _build_model_config_tree saves only
model, so every checkpoint fell back to the legacy 14-D ypr pipeline and a
6D policy would have produced garbage commands. trainHydra now records
{dataset: transform_list.mode} as data_transform_modes in that tree, and the
rollout reads it from there. A checkpoint without it (every one trained
before this commit) is taken as legacy only when its saved actions_cartesian
width is 14; otherwise the rollout refuses to guess and asks for the new
--transform-mode flag.

EMBODIMENT_MAP still held the pre-collapse ids (8/7/6 for both/left/right);
it now reads them from EMBODIMENT.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01GqAcWA2Lk9zubUhKX5DW1v
@RyanPCo

RyanPCo commented Oct 30, 2026

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Review findings: status after the fixup pass. The fixes are squashed into this PR's commits, and the whole stack was force-pushed.

Fixed

  • Renaming RobotBimanualCartesianEuler/HumanBimanualCartesianEuler breaks loading every existing pi0.5 checkpoint: Added the old names as aliases of the 6D classes, plus a hydra-instantiate test for both old target names.
  • An explicit or recorded cartesian_wristframe_ypr mode skips the wrist->camera revert: _checkpoint_transform_mode now returns None only for the unrecorded 14-D fallback. An explicit or recorded ypr mode builds the revert. Added PolicyRollout wiring tests.
  • Renaming ...CartesianEuler breaks saved config trees: Duplicate of the alias finding above; same fix.
  • decode/project/draw_triad/AXIS_COLORS copy-pasted between the two viz scripts: New egomimic/scripts/zarr_episode_viz.py holds decode, project, draw_triad, episode_path and write_episode_video; both scripts use it. Added a smoke test.
  • PIL-optional fallback is dead and inconsistent: PIL is now imported once at the top; removed the try/except and the if Image branches.
  • Scheduler comment narrates the change instead of the setting: Replaced with a one-line why.
  • raw None handled for body but not for raw.get: Now raw = yaml.safe_load(...) or {} once.
  • No-op restyle with a comment unrelated to the code: Restored the original _pi.

Partial

  • Unchanged tests moved under the wrong section header; module docstring dropped a covered topic: Gave the moved tests a 'norm bounds / loss reduction' header and restored the docstring mention. Did not move them back, and left the same churn in test_eva_wristframe_norm_pool.py alone.

Not fixed

  • Two 300M HPT model configs are ~130 identical lines: Design-level. Three later PRs (652/649/650) edit these files, so restructuring them at the base of the stack would conflict on autosquash and change what the keypoint config inherits.
  • Four mecka 6D data configs copy the same resolver/keymap/transform/loader blocks: Design-level base-config refactor. PRs 642/650 later edit these data configs, so it is better done as a follow-up after the stack lands.

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