lfm2: strip lm_head.weight for tied embeddings#1055
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ykhrustalev wants to merge 1 commit intoml-explore:mainfrom
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lfm2: strip lm_head.weight for tied embeddings#1055ykhrustalev wants to merge 1 commit intoml-explore:mainfrom
ykhrustalev wants to merge 1 commit intoml-explore:mainfrom
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The lfm2 model always uses tied embeddings (embed_tokens.as_linear), but some checkpoints (e.g. LiquidAI/LFM2.5-350M) ship a separate lm_head.weight in their safetensors. This causes load_weights to raise "Received 1 parameters not in model: lm_head.weight". Strip lm_head.weight in sanitize, matching the pattern already used by llama, mixtral, and qwen3_moe.
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cc @Blaizzy |
Blaizzy
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Mar 25, 2026
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Could you share what model weights have lm_head?
Because this model by default shouldn't have lm_head because it has tied word embeddings.
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@Blaizzy you are right, the checkpoint I am using is little different, I will check and come back. |
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