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pufferl: log obs max/min/mean per eval step #458

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Merged
eugenevinitsky merged 1 commit into from
May 30, 2026
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pufferl: log obs max/min/mean per eval step #458

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7 changes: 7 additions & 0 deletions pufferlib/pufferl.py
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Original file line number Diff line number Diff line change
Expand Up @@ -377,6 +377,13 @@ def evaluate(self):
done_mask = (d + t).clamp(max=1.0)
m = torch.as_tensor(mask).to(device) # , non_blocking=True)

# Obs distribution stats (max/min/mean across the batch and obs
# dims, appended per env step). Surfaces clipping / unbounded
# features / normalization regressions in wandb.
self.stats["obs/max"].append(o_device.max().item())
self.stats["obs/min"].append(o_device.min().item())
self.stats["obs/mean"].append(o_device.mean().item())

profile("eval_forward", epoch)
with torch.no_grad(), self.amp_context:
state = dict(
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