Make load_weights completely optional#49038
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Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>
Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>
Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>
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Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>
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July 19, 2026 14:45
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Part of #48972
Infrastructure changes:
autoload_weightsand use it in weight loaders and runners. This creates it's ownAutoWeightsLoaderif the model doesn't have aload_weightsmethodload_weightsmethod, auto apply anyhf_to_vllm_mapperinAutoWeightsLoader._load_moduleas the model is recursed intoskip_prefixandskip_substrsfromAutoWeightsLoader. These arguments duplicate the behaviour achievable with the mapper. Convert all uses of these arguments to mapper mappingslm_headskipping for models withtie_word_embeddingsso every model doesn't need to specify this manuallyfused_qkv_interleavedtoQKVParallelLinearso that it can de-interleave a fused weight itself