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lerobot/tests
Martino Russi 6e5f6df6e7 fix(evo1): re-pad normalizer stats when loading from checkpoint (#3945)
* fix(evo1): re-pad normalizer stats when loading from checkpoint

reconcile_evo1_processors did not re-pad the (un)normalizer stats to
max_state_dim/max_action_dim on the checkpoint-load path. When
lerobot-train loads a checkpoint (e.g. stage2 from a stage1 checkpoint)
it injects the raw dataset stats via processor overrides, so LIBERO's
8-dim state stats normalized a 24-dim padded state and crashed with
"size of tensor a (24) must match tensor b (8)".

Restore _refresh_evo1_normalization_steps (removed in the "remove legacy
codepaths" refactor) and call it from reconcile_evo1_processors so the
loaded stats/features are re-padded to EVO1's fixed widths. Padding is a
no-op when stats are already at the target width.

Co-authored-by: Cursor <cursoragent@cursor.com>

* test(evo1): cover reconcile re-padding of overridden normalizer stats

Regression test for the stage2-from-checkpoint crash: reloading a
checkpoint with raw (unpadded) dataset stats injected via processor
overrides must be re-padded to max_state_dim/max_action_dim by
reconcile_evo1_processors, otherwise normalizing the padded state
raises a shape mismatch.

Co-authored-by: Cursor <cursoragent@cursor.com>

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Co-authored-by: Martino Russi <martino@huggingface.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: Steven Palma <imstevenpmwork@ieee.org>
2026-07-29 17:26:39 +02:00
..
2026-05-12 15:49:54 +02:00