device map to auto

app.py

@@ -114,14 +114,14 @@ def download_and_merge_model(base_model_name, lora_model_name, output_dir, devic
     """
     os.makedirs("temp", exist_ok=True)
     log.info("Loading base model...")
-    model = AutoModelForCausalLM.from_pretrained(base_model_name, low_cpu_mem_usage=True, device_map="disk", trust_remote_code=True, offload_folder="temp")
+    model = AutoModelForCausalLM.from_pretrained(base_model_name, low_cpu_mem_usage=True, device_map="auto", trust_remote_code=True, offload_folder="temp")
     log.info("Loading adapter tokenizer...")
-    adapter_tokenizer = AutoTokenizer.from_pretrained(lora_model_name, trust_remote_code=True, device_map="disk", offload_folder="temp")
+    adapter_tokenizer = AutoTokenizer.from_pretrained(lora_model_name, trust_remote_code=True, device_map="auto", offload_folder="temp")
     log.info("Resizing token embeddings...")
     added_tokens_decoder = adapter_tokenizer.added_tokens_decoder
     model.resize_token_embeddings(adapter_tokenizer.vocab_size + len(added_tokens_decoder))
     log.info("Loading LoRA adapter...")
-    peft_model = PeftModel.from_pretrained(model, lora_model_name, low_cpu_mem_usage=True, device_map="disk", trust_remote_code=True, offload_folder="temp")
+    peft_model = PeftModel.from_pretrained(model, lora_model_name, low_cpu_mem_usage=True, device_map="auto", trust_remote_code=True, offload_folder="temp")
     log.info("Merging and unloading model...")
     model = peft_model.merge_and_unload()
     log.info("Saving model...")