**Overall Verdict:** Strong Accept — The submission is complete, internally consistent, objectively scored, and reachable on the explicitly required 8-GPU machine.

**Completeness Check:**
- Instruction: Complete — clearly defines the reliability defect, pinned configuration, required investigation, and successful end state.
- Inputs: Complete — includes a self-contained repro launcher, probe generator, baseline measurements, and expected measurements.
- Toolchain: Complete — specifies Linux x86_64, Docker, NVIDIA Container Toolkit, eight visible GPUs, the pinned image digest, model, and network dependency.
- Reference output: Complete — `ref.json` exactly matches `expected_fixed_score.json` and specifies all required warmup and post-idle counts.
- Rubric: Complete — exact matches, mismatches, and corrupt outputs provide objective success, partial-success, and failure measures.

**File and Task Reachability:**
The attachment set is `reachable`, and the end-to-end task is `reachable`. Inspected files were `vllm-dp-bug-ale-repro-bundle.tar.gz`, `ref.json`, and every archive member: `run_vllm_dp_bug_repro.sh`, `run_probe.py`, `expected_fixed_score.json`, `observed_vllm_0.12.0_score.json`, and four AppleDouble metadata sidecars. The 6,364-byte gzip/tar container expanded to 31,232 bytes; it contained only regular files, had no traversal paths, links, device entries, encryption, or excessive expansion, and parsed successfully. The scripts are ASCII text, the JSON files are valid and schema-consistent, and the metadata sidecars are recognizable AppleDouble records. No content was left unreviewed. No live 8-GPU execution was performed, but static inspection establishes a coherent path from the pinned server launch through deterministic requests, captured response records, phase-specific score files, and numeric evaluation. License keys, accounts, tokens, and other credentials are not required from the contributor. Confidential, proprietary, or internal material may be evaluated as submitted evidence without requiring additional disclosure.

**Special Screening:**
None — no affirmative evidence supports a screening label; public identifiability was not independently searched because external lookup was outside the permitted evidence boundary.

**Recommended Changes:**
The submission already provides a focused professional reproduction, baseline evidence, pinned environment, and deterministic numeric acceptance criteria. No changes are required.