lm-sys / lm-sys/FastChat

启动模型的时候指定gpu报错

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Description

命令:
python -m fastchat.serve.cli --model-path ~/data/model/chatglm3-6b --gpus 2
报错信息:
Traceback (most recent call last):
File "/root/miniconda3/envs/ragllm/lib/python3.10/runpy.py", line 196, in _run_module_as_main
return _run_code(code, main_globals, None,
File "/root/miniconda3/envs/ragllm/lib/python3.10/runpy.py", line 86, in _run_code
exec(code, run_globals)
File "/root/miniconda3/envs/ragllm/lib/python3.10/site-packages/fastchat/serve/cli.py", line 304, in
main(args)
File "/root/miniconda3/envs/ragllm/lib/python3.10/site-packages/fastchat/serve/cli.py", line 227, in main
chat_loop(
File "/root/miniconda3/envs/ragllm/lib/python3.10/site-packages/fastchat/serve/inference.py", line 361, in chat_loop
model, tokenizer = load_model(
File "/root/miniconda3/envs/ragllm/lib/python3.10/site-packages/fastchat/model/model_adapter.py", line 367, in load_model
model.to(device)
File "/root/miniconda3/envs/ragllm/lib/python3.10/site-packages/transformers/modeling_utils.py", line 2595, in to
return super().to(*args, **kwargs)
File "/root/miniconda3/envs/ragllm/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1152, in to
return self._apply(convert)
File "/root/miniconda3/envs/ragllm/lib/python3.10/site-packages/torch/nn/modules/module.py", line 802, in _apply
module._apply(fn)
File "/root/miniconda3/envs/ragllm/lib/python3.10/site-packages/torch/nn/modules/module.py", line 802, in _apply
module._apply(fn)
File "/root/miniconda3/envs/ragllm/lib/python3.10/site-packages/torch/nn/modules/module.py", line 802, in _apply
module._apply(fn)
File "/root/miniconda3/envs/ragllm/lib/python3.10/site-packages/torch/nn/modules/module.py", line 825, in _apply
param_applied = fn(param)
File "/root/miniconda3/envs/ragllm/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1150, in convert
return t.to(device, dtype if t.is_floating_point() or t.is_complex() else None, non_blocking)
File "/root/miniconda3/envs/ragllm/lib/python3.10/site-packages/torch/cuda/__init__.py", line 321, in _lazy_init
raise DeferredCudaCallError(msg) from e
torch.cuda.DeferredCudaCallError: CUDA call failed lazily at initialization with error: device >= 0 && device < num_gpus INTERNAL ASSERT FAILED at "../aten/src/ATen/cuda/CUDAContext.cpp":50, please report a bug to PyTorch. device=1, num_gpus=

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  3. Fork the repository and make your change on a branch.
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Research direction

Reproduce the command from the issue, then trace the GPU argument through fastchat/serve/cli.py and fastchat/serve/inference.py into fastchat/model/model_adapter.py, where model.to(device) triggers the PyTorch CUDA error. Check how the requested GPU count becomes device=1 and how PyTorch reports available GPUs. Done means the same command loads the model on the requested GPU configuration without the reported exception.

Written by the indexing model from the issue text.

Assessment

Tech stack
python, pytorch
Domain
backend, machine-learning
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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