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convert : fix TypeError when loading base model remotely in convert_lora_to_gguf (#17385)

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* fix: TypeError when loading base model remotely in convert_lora_to_gguf

* refactor: simplify base model loading using cache_dir from HuggingFace

* Update convert_lora_to_gguf.py

Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>

* feat: add remote_hf_model_id to trigger lazy mode in LoRA converter

---------

Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>
This commit is contained in:
o7si
2025-11-20 19:30:12 +08:00
committed by GitHub
parent 845f200b28
commit 5088b435d4
1 changed files with 10 additions and 4 deletions
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14
convert_lora_to_gguf.py
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@@ -277,10 +277,15 @@ def parse_args() -> argparse.Namespace:
return parser.parse_args()
def load_hparams_from_hf(hf_model_id: str) -> dict[str, Any]:
def load_hparams_from_hf(hf_model_id: str) -> tuple[dict[str, Any], Path | None]:
from huggingface_hub import try_to_load_from_cache
# normally, adapter does not come with base model config, we need to load it from AutoConfig
config = AutoConfig.from_pretrained(hf_model_id)
return config.to_dict()
cache_dir = try_to_load_from_cache(hf_model_id, "config.json")
cache_dir = Path(cache_dir).parent if isinstance(cache_dir, str) else None
return config.to_dict(), cache_dir
if __name__ == '__main__':
@@ -325,13 +330,13 @@ if __name__ == '__main__':
# load base model
if base_model_id is not None:
logger.info(f"Loading base model from Hugging Face: {base_model_id}")
hparams = load_hparams_from_hf(base_model_id)
hparams, dir_base_model = load_hparams_from_hf(base_model_id)
elif dir_base_model is None:
if "base_model_name_or_path" in lparams:
model_id = lparams["base_model_name_or_path"]
logger.info(f"Loading base model from Hugging Face: {model_id}")
try:
hparams = load_hparams_from_hf(model_id)
hparams, dir_base_model = load_hparams_from_hf(model_id)
except OSError as e:
logger.error(f"Failed to load base model config: {e}")
logger.error("Please try downloading the base model and add its path to --base")
@@ -480,6 +485,7 @@ if __name__ == '__main__':
dir_lora_model=dir_lora,
lora_alpha=alpha,
hparams=hparams,
remote_hf_model_id=base_model_id,
)
logger.info("Exporting model...")