[NV] update B300 disagg recipes (same-repo sweep copy)

[jasonlizhengjian]

Copy of #1887 from biswapanda:pr-1787-latest--update at d08cc43b7e943a7a53c67194448d4309f338cbc4.

The original fork PR triggered run-sweep.yml, but all downstream benchmark jobs failed before checkout because fork PRs do not receive inherited repository secrets such as REPO_PAT. This same-repo copy is intended to run the sweep with the same diff against main.

Original PR: #1887

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Note

Low Risk
Changes are benchmark configuration, Slurm recipes, and launcher-only runtime patches; no application auth, data, or production serving paths.

Overview
Adds minimaxm3-fp8-b300-dynamo-vllm to the NVIDIA master sweep with multinode prefill/decode search spaces for 1k/1k and 8k/1k, each pointing at new srt-slurm recipe YAMLs under benchmarks/multi_node/srt-slurm-recipes/vllm/minimax-m3/b300-fp8/.

launch_b300-nv.sh is extended to run that stack: clone sa-submission-q2-2026, overlay local recipes, apply an minimax-m3-vllm-fixes.sh setup script (runtime patches to the pinned vLLM image for MSA top-k contiguity and NIXL heterogeneous-TP KV sizing), optional Slurm exclude for b300-018, and srtctl apply --setup-script. Recipes cover DEP2 prefill with varied decode shapes (TEP8, DEP8, DEP4, TP4+Marlin with colocation and CUDA IPC where needed); 8k recipes add fp8 KV cache and FlashInfer attention settings.

perf-changelog.yaml documents the new config key and workarounds/backports.

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[github-actions]

Thanks for the contribution! For vLLM & SGLang, please ensure that your recipes is similar to the official vLLM recipes and/or the SGLang cookbook

• https://docs.sglang.io/cookbook/intro
• https://recipes.vllm.ai/

If it is not, please create a PR first before we can merge your single node PR into the master branch. Let's ensure that the documentation is first class such that the entire ML community can benefit from your hard work! Thank you

• https://github.com/vllm-project/recipes
• https://github.com/sgl-project/sglang/tree/main/docs_new

PR authors are responsible for ensuring that after merging, all GitHub Action jobs fully pass. A lot of the time, failures are just flakes and simply re-running the failed jobs will fix it. If re-running failed jobs is attempted, PR authors are responsible for ensuring it passes. See GitHub's docs on re-running failed jobs: https://docs.github.com/en/actions/how-tos/manage-workflow-runs/re-run-workflows-and-jobs#re-running-failed-jobs-in-a-workflow

As a rule of thumb, generally, PR authors should request a review & get a PR approval from the respective companies' CODEOWNERS before requesting a review from core maintainers.

If additional help is needed, PR authors can reach out to core maintainers over Slack.

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感谢你的贡献！对于 vLLM 与 SGLang，请确保你的 recipe 与官方 vLLM recipes 和/或 SGLang cookbook 保持一致

• https://docs.sglang.io/cookbook/intro
• https://recipes.vllm.ai/

如果不一致，请先创建一个 PR，之后我们才能将你的单节点 PR 合并到 master 分支。让我们确保文档保持一流水准，使整个 ML 社区都能从你的辛勤工作中受益！谢谢

• https://github.com/vllm-project/recipes
• https://github.com/sgl-project/sglang/tree/main/docs_new

PR 作者有责任确保合并后所有 GitHub Action 任务完全通过。 很多时候失败只是偶发抖动（flake），重新运行失败的任务即可解决。如果选择重新运行失败的任务，PR 作者有责任确保其最终通过。参见 GitHub 关于重新运行失败任务的文档：https://docs.github.com/en/actions/how-tos/manage-workflow-runs/re-run-workflows-and-jobs#re-running-failed-jobs-in-a-workflow

一般而言，PR 作者应先向相应公司的 CODEOWNERS 请求审阅并获得 PR 批准，然后再请求核心维护者审阅。

如需更多帮助，PR 作者可通过 Slack 联系核心维护者。

[github-actions]

see unofficial run visualizer at https://inferencex.semianalysis.com/inference?unofficialRun=27999202538
see unofficial run visualizer at https://inferencex.semianalysis.com/evaluation?unofficialRun=27999202538

[cursor]

Cursor Bugbot has reviewed your changes and found 2 potential issues.

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[cursor]

Decode seq cap below concurrency

Medium Severity

The sa-bench concurrency is 4096 while decode max-num-seqs is 1024 with two decode workers. That pairing cannot honor 4096 simultaneous decode slots per worker semantics, so the 4096 sweep point may queue, fail, or report throughput that does not reflect the intended load.

Additional Locations (1)

• benchmarks/multi_node/srt-slurm-recipes/vllm/minimax-m3/b300-fp8/8k1k/4p2d-dep2-tep4-8k1k.yaml#L69-L82

 

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[cursor]

Patch apply aborts launcher

Medium Severity

The MiniMax-M3 path runs git apply for the node-IP fix with || exit 1, so if sa-submission-q2-2026 already contains that patch, checkout/setup fails and no B300 MiniMax-M3 job is submitted.

 

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