[Bugfix] Fix load config when using bools

[madt2709]

Fixes #9499

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[mgoin]

I think we have some boolean arguments that aren't just store_true. I know you can specify --trust-remote-code=True on the CLI so maybe the issue could also be solved by the mismatch of capitalization on true vs True - what do you think?

[madt2709]

I searched for store_false on this file: https://github.com/vllm-project/vllm/blob/main/vllm/engine/arg_utils.py and couldn't find any instances of it.

However, with a second look, there's two types of boolean flags:

• action='store_true' eg --trust-remote-code
• action=StoreBoolean eg --disable-logprobs-during-spec-decoding.

In the store_true case, --trust-remote-code=True doesn't work eg run vllm serve facebook/opt-125m --trust-remote-code=True and it errors with vllm serve: error: argument --trust-remote-code: ignored explicit argument 'True'.

In the StoreBoolean case, --disable-logprobs-during-spec-decoding=True does work.

So I think my code needs to add an extra check for these StoreBoolean arguments and explicitly set the value in that case.

[madt2709]

Updated the PR to handle StoreBoolean values.

• Moved StoreBoolean to vllm/utils.py to avoid circular imports
• Updated the _load_config_from_file to not be static so it can check which arguments are in StoreBoolean case
• Added a check for the StoreBoolean

[mgoin]

Ah you were right about the difference there, but yes I was referring to the usage of StoreBoolean! Thanks for looking into this

[madt2709]

Hi @mgoin, thanks for taking the time to look over this. What's the process for getting this reviewed? First time contributing here.

[mgoin]

Just ask and ping related folks, as you did. I think this is good to go, thanks!

[madt2709]

Thanks @mgoin! There's a failing test buildkite/ci-aws/pr/distributed-tests-2-gpus which is failing. I tried rebasing onto main but also seems to be also failing on main branch so unlikely to be related to the change. Can you bypass the requirements please and merge this? Or let me know if there's some other way I should be fixing this.