fix #199

src/llmtuner/tuner/core/loader.py

@@ -10,6 +10,7 @@ from transformers import (
 )
 from transformers.utils import check_min_version
 from transformers.utils.versions import require_version
+from transformers.trainer import is_deepspeed_zero3_enabled
 from transformers.modeling_utils import PretrainedConfig, PreTrainedModel
 from transformers.tokenization_utils import PreTrainedTokenizerBase
 from trl import AutoModelForCausalLMWithValueHead
@@ -108,7 +109,7 @@ def load_model_and_tokenizer(
         model_to_load,
         config=config,
         torch_dtype=torch.bfloat16 if model_args.compute_dtype == torch.bfloat16 else torch.float16,
-        low_cpu_mem_usage=True,
+        low_cpu_mem_usage=(not is_deepspeed_zero3_enabled()),
         **config_kwargs
     )