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Support save/load model for hf generate #12499

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merged 3 commits into from
Dec 4, 2024
Merged

Support save/load model for hf generate #12499

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change dummy model
hkvision Dec 4, 2024
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35 changes: 24 additions & 11 deletions python/llm/src/ipex_llm/transformers/npu_model.py
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Original file line number Diff line number Diff line change
Expand Up @@ -423,23 +423,36 @@ def load_low_bit(cls, pretrained_model_name_or_path: str, *model_args, **kwargs)

if enable_cpp_backend:
from .npu_models.npu_llm_cpp import load_model_from_file
from .npu_models.convert import generate
dummy_model = torch.nn.Module()
from .npu_models.convert import generate, general_convert
from .npu_models.convert import prepare_input_ids, causal_lm_forward
config = AutoConfig.from_pretrained(
os.path.join(pretrained_model_name_or_path, "config.json"),
trust_remote_code=trust_remote_code)
with torch.device('meta'):
model = transformers.AutoModelForCausalLM.from_config(
config, trust_remote_code=trust_remote_code)
try:
model_ptr = load_model_from_file(pretrained_model_name_or_path)
dummy_model.config = PretrainedConfig.from_dict(config_dict)
dummy_model.model_ptr = model_ptr
dummy_model.save_directory = pretrained_model_name_or_path
dummy_model.kv_len = config_dict['kv_len']
dummy_model.vocab_size = config_dict['vocab_size']
model.config = config
model.model_ptr = model_ptr
model.save_directory = pretrained_model_name_or_path
model.kv_len = config_dict['kv_len']
model.vocab_size = config_dict['vocab_size']
model.logits_buffer = torch.empty(1, 1, model.vocab_size, dtype=torch.float32)
except:
invalidInputError(False,
"False to InitLLMPipeline.")
dummy_model.eval()
"Fail to InitLLMPipeline.")
model.eval()
# patch model forward
from transformers.modeling_utils import PreTrainedModel
general_convert(model, PreTrainedModel, prepare_input_ids,
"prepare_inputs_for_generation")
general_convert(model, PreTrainedModel, causal_lm_forward)
# patch generate function
import types
dummy_model.generate = types.MethodType(generate, dummy_model)
return dummy_model
model.original_generate = model.generate
model.generate = types.MethodType(generate, model)
return model

has_remote_code = hasattr(config, "auto_map") and cls.HF_Model.__name__ in config.auto_map
has_local_code = type(config) in cls.HF_Model._model_mapping.keys()
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