lm-sys / lm-sys/FastChat

Question about gen_model_answer.py with gpt2-large

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Description

If I run

```
python gen_model_answer.py --model-path openai-community/gpt2-large --model-id gpt2-large
```

under the directory `FastChat/fastchat/llm_judge` I get this error

```
/opt/conda/conda-bld/pytorch_1711403380909/work/aten/src/ATen/native/cuda/Indexing.cu:1237: indexSelectSmallIndex: block: [8,0,0], thread: [86,0,0] Assertion `srcIndex < srcSelectDimSize` failed.
/opt/conda/conda-bld/pytorch_1711403380909/work/aten/src/ATen/native/cuda/Indexing.cu:1237: indexSelectSmallIndex: block: [8,0,0], thread: [87,0,0] Assertion `srcIndex < srcSelectDimSize` failed.
/opt/conda/conda-bld/pytorch_1711403380909/work/aten/src/ATen/native/cuda/Indexing.cu:1237: indexSelectSmallIndex: block: [8,0,0], thread: [88,0,0] Assertion `srcIndex < srcSelectDimSize` failed.
/opt/conda/conda-bld/pytorch_1711403380909/work/aten/src/ATen/native/cuda/Indexing.cu:1237: indexSelectSmallIndex: block: [8,0,0], thread: [89,0,0] Assertion `srcIndex < srcSelectDimSize` failed.
/opt/conda/conda-bld/pytorch_1711403380909/work/aten/src/ATen/native/cuda/Indexing.cu:1237: indexSelectSmallIndex: block: [8,0,0], thread: [90,0,0] Assertion `srcIndex < srcSelectDimSize` failed.
/opt/conda/conda-bld/pytorch_1711403380909/work/aten/src/ATen/native/cuda/Indexing.cu:1237: indexSelectSmallIndex: block: [8,0,0], thread: [91,0,0] Assertion `srcIndex < srcSelectDimSize` failed.
/opt/conda/conda-bld/pytorch_1711403380909/work/aten/src/ATen/native/cuda/Indexing.cu:1237: indexSelectSmallIndex: block: [8,0,0], thread: [92,0,0] Assertion `srcIndex < srcSelectDimSize` failed.
/opt/conda/conda-bld/pytorch_1711403380909/work/aten/src/ATen/native/cuda/Indexing.cu:1237: indexSelectSmallIndex: block: [8,0,0], thread: [93,0,0] Assertion `srcIndex < srcSelectDimSize` failed.
/opt/conda/conda-bld/pytorch_1711403380909/work/aten/src/ATen/native/cuda/Indexing.cu:1237: indexSelectSmallIndex: block: [8,0,0], thread: [94,0,0] Assertion `srcIndex < srcSelectDimSize` failed.
/opt/conda/conda-bld/pytorch_1711403380909/work/aten/src/ATen/native/cuda/Indexing.cu:1237: indexSelectSmallIndex: block: [8,0,0], thread: [95,0,0] Assertion `srcIndex < srcSelectDimSize` failed.
0%| | 0/80 [00:10
run_eval(
File "/FastChat/fastchat/llm_judge/gen_model_answer.py", line 55, in run_eval
get_answers_func(
File "/anaconda/lib/python3.10/site-packages/torch/utils/_contextlib.py", line 115, in decorate_context
return func(*args, **kwargs)
File "/anaconda/lib/python3.10/site-packages/transformers/tokenization_utils_base.py", line 800, in to
self.data = {k: v.to(device=device) for k, v in self.data.items()}
File "/anaconda/lib/python3.10/site-packages/transformers/tokenization_utils_base.py", line 800, in
self.data = {k: v.to(device=device) for k, v in self.data.items()}
RuntimeError: CUDA error: device-side assert triggered
CUDA kernel errors might be asynchronously reported at some other API call, so the stacktrace below might be incorrect.
For debugging consider passing CUDA_LAUNCH_BLOCKING=1.
Compile with `TORCH_USE_CUDA_DSA` to enable device-side assertions.
```

Is this error expected?

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Research direction

Reproduce the command from fastchat/llm_judge and inspect gen_model_answer.py, especially run_eval and the reported call path. Use CUDA_LAUNCH_BLOCKING=1 as suggested by the traceback to identify the failing operation; done means establishing whether gpt2-large is supported by this evaluation entry point and documenting or resolving the cause.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
machine-learning
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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