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Beschreibung
So I have a GPTQ llama model I downloaded (from TheBloke), and it's already 4 bit quantized. I have to pass in False for the load_in_4bit parameter of:
model, tokenizer = FastLlamaModel.from_pretrained(
because if I don't, I get an error thrown saying:
The model is already quantized with gptq. You can't quantize it again with bitsandbytes
But, if I pass in False for load_in_4bit, this code makes bnb_config be None:
bnb_config = None
if load_in_4bit:
bnb_config = BitsAndBytesConfig(
load_in_4bit = True,
bnb_4bit_use_double_quant = True,
bnb_4bit_quant_type = "nf4",
bnb_4bit_compute_dtype = dtype,
)
and that makes quantization_config be None as well:
quantization_config = bnb_config,
and that crashes here:
if hasattr(self, "quantization_config"):
output["quantization_config"] = (
self.quantization_config.to_dict()
with the error message:
'NoneType' object has no attribute 'to_dict'
So I'm not sure how to LoRA train this llama model. Any thoughts?