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Trouble with vLLM draft

3 posts from 3 people3d activeRising, +2 this week

Posts per day

Posts per day3 posts, Oct 18 to Nov 9

The posts behind it

GitHub issuesvllm-project/vllm · takumi-ricohNov 5

[Bug]: With `HF_HUB_OFFLINE=1`, a Hub-ID speculative draft model logs `ERROR ... Error retrieving safetensors: ... offline mode is enabled` twice (plus a 2 s retry sleep), although startup succeeds

### Your current environment Environment (summary; collect_env.py output not attached) The relevant code path is unchanged on `main` (checked at 86fdabec0c82d0470c160aa4df7602ac22c207e6), so this should also reproduce on the latest version. ### 🐛 Describe the bug When the...

GitHub issuesvllm-project/vllm · pisceskkkNov 3

[RFC]: Decouple Physical PCP Topology from Per-Forward Attention Layout and Draft Execution Policy

### Motivation. #### Problem Summary When running speculative decoding with a replicated Multi-head Latent Attention (MLA) draft model (e.g., `DSparkSpeculator` / `DFlashSpeculator`) under a valid target Prefill Context Parallelism (PCP) + Decode Context Parallelism (DCP)...

GitHub issuesvllm-project/vllm · Siquan-LiOct 18

[Bug]: Draft model construction resets data_parallel_index to 0 (load_draft_model / create_draft_parallel_config) — residual site not covered by #62062

> **Correction (2026-10-18):** After review, the residual site described below is real but was **mis-scoped in this issue**: > - It does **not** affect DFlash/DFlash2/DSpark. DFlash overrides `load_draft_model` and builds via `load_dflash_model(target_model, self.vllm_config)` -...

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Companies and products named

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About this problem

Evidence

3 posts from 3 people in 1 place, about 1 a week over 19 days. Mostly on vllm-project/vllm. Tools named alongside: GitHub, PyTorch, NVIDIA.

Frustration Frustration 0 of 3· Seen on GitHub issues

How it was grouped

Posts about vLLM with no known issue, sharing the word "draft". First post Oct 18, 2026, latest Nov 5, 2026. Corroborated: 3 or more posts from 2 or more people or places. Method

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Top post: "AOT compile cache never loads for Qwen3.5 models: Kernel index 1 not found in id_to_kernel", one of 4 posts from 4 people on GitHub issues.

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Top post: "ROCM_AITER_MLA can select an aiter MLA decode kernel that silently returns uncorrelated output (gqa_ratio=16,", one of 3 posts from 3 people on GitHub issues.

Trouble with vLLM size

Top post: "EPLB counts load for the wrong expert when step_interval < window_size", one of 3 posts from 3 people on GitHub issues.

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History

First seen with 3 posts; the top post now: "Draft model construction resets data_parallel_index to 0 (load_draft_model / create_draft_parallel_config),".

Nov 7, 2026