re-port sanitize, fix #431#432
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davidkoski
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Oct 28, 2025
| newKey = newKey.replacingOccurrences(of: "lm_head", with: "language_model.lm_head") | ||
| guard !config.textConfiguration.tieWordEmbeddings else { continue } | ||
| adjusted[newKey] = value | ||
| continue |
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Make the sanitize match the python version, see #431. It was converting
(lldb) po weights.keys.sorted()
▿ 1258 elements
- 0 : "language_model.lm_head.biases"
- 1 : "language_model.lm_head.scales"
- 2 : "language_model.lm_head.weight"
to
(lldb) po weights.keys.sorted()
▿ 1258 elements
- 0 : "language_language_model.lm_head.biases"
- 1 : "language_language_model.lm_head.scales"
- 2 : "language_language_model.lm_head.weight"
This omits the logic of guard !config.textConfiguration.tieWordEmbeddings else { continue } (these keys are unused if tieWordEmbeddings is present). If we need that I think it should be re-inserted right before line 1725 (adjusted[newKey] = value)
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I think the mlx_vlm code doesn't end up caring if the lm_head keys are consumed so we do need that logic.
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Just went through this; LGTM! Apologies for the error in the first place |
atdrendel
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Dec 6, 2025
* re-port sanitize, fix ml-explore#431
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