[WideEP] Update NCCL to 2.30.7 to enable DeepEPv2 in the vllm/vllm-openai image

[tlrmchlsmth]

Update DeepEP to deepseek-ai/DeepEP@d4f41e4 so that we can pick up DeepEPv2.

Missed this in #41183

Ideally we'd have a single source of truth for the commit across both the install script and the Dockerfile but I don't see a sane way to do it at the moment

PyTorch ships an earlier version of NCCL. Per feedback from the NCCL team, I think this should be safe as

libnccl.so is designed to be backward compatible. This means you can compile your program with an older version (e.g., v1.28) and run it with a newer version at runtime (e.g., v1.30). However, the actual runtime environment should only use one version of NCCL at a time.

For the pypi wheel, no change is needed since we don't ship DeepEP in the wheel.

[tlrmchlsmth]

Actually an issue here -- we need to update NCCL to > 2.30.4 during DeepEP compilation as well, not just rely on installing it afterwards like I thought we could

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[mergify]

Documentation preview: https://vllm--45321.org.readthedocs.build/en/45321/

[mergify]

Hi @tlrmchlsmth, the pre-commit checks have failed. Please run:

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[mergify]

Hi @tlrmchlsmth, the pre-commit checks have failed. Please run:

uv pip install pre-commit>=4.5.1
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[LucasWilkinson]

LGTM

[mergify]

Hi @tlrmchlsmth, the pre-commit checks have failed. Please run:

uv pip install pre-commit>=4.5.1
pre-commit install
pre-commit run --all-files

Then, commit the changes and push to your branch.

For future commits, pre-commit will run automatically on changed files before each commit.

[AndreasKaratzas]

@tlrmchlsmth would it be alright if our team takes an hour or two to check if test groups are good on rocm too? I promise I ll have my eye here to merge it ASAP

UPDATE: Done :)

[mgoin]

Tyler is confident :)