Stranger-path dry + REPRODUCE exact — 2026-07-29
Intent: verify a newcomer can follow pack docs without founder brain.
Full clone/rebuild of llama.cpp on Spark is not re-run here (engine already pinned 04b2b72).
This is a doc + path integrity dry against live tree + live pins.
Sources walked
README.md→ One-evening stranger path (S1)docs/REPRODUCE.md→ full pin table + numbered stepsSPARK.md→ build + serve + measuredresults/MEASURED.md+results/LAST_GREEN_PIN.md
Checklist
| # | Step | Status | Note |
|---|---|---|---|
| 1 | License / OpenMDW accept before redistribute | PASS | stated in REPRODUCE step 1 |
| 2 | Engine clone branch laguna |
PASS | command present README + SPARK |
| 3 | CUDA arch 121 → 121a note |
PASS | SPARK build section |
| 4 | Record engine git rev-parse HEAD |
PASS | REPRODUCE step 3 → results/engine_sha.txt |
| 5 | Weight download + revision pin | PASS | REPRODUCE lists GGUF rev fc4e481… + sha256 |
| 6 | Serve flags match measured | PASS | SPARK default serve now -ngl -1 + alias; REPRODUCE + README already aligned |
| 7 | /v1/models health gate |
PASS | REPRODUCE step 5 |
| 8 | bench_server / llama-bench targets | PASS | steps 6–7; llama-bench uses -ngl -1 |
| 9 | agent_smoke 40 + optional hermes 27 | PASS | steps 8 / 8b |
| 10 | Populate SPARK from files only | PASS | step 9 |
| 11 | DIY gated | PASS | diy_gguf false + policy |
| 12 | DFlash not default path | PASS | optional; DO_NOT_PROMOTE measured |
| 13 | HF surface id correct | PASS | hizrianraz/Laguna-S-2.1-Spark-Agentic |
| 14 | Scoreboard row distinguishes headline vs IQ3 pointer | PASS | README scoreboard |
| 15 | Dual gen numbers | PASS | scoreboard names 21.47 authoritative vs 21.016 band-only |
Exact REPRODUCE pins (copy)
Base model poolside/Laguna-S-2.1
Base revision 00af5a51782109b587a3b3bbf11875e566036fa7
GGUF repo poolside/Laguna-S-2.1-GGUF
GGUF revision fc4e481289523cf7d0df668da6d1d391616141ca
Default weight laguna-s-2.1-Q4_K_M.gguf
Q4_K_M sha256 a8b55c75714ea73fd90ec85de5defdc0b8d88ca0ad2108343cdd8fc22f7583e4
Engine github.com/poolsideai/llama.cpp branch laguna
Engine measured SHA 04b2b72cb54048ead292884adbe11f284e3ec950
Hardware DGX Spark GB10 only
Stranger serve one-liner (aligned to last green)
./build/bin/llama-server \
-m ~/models/laguna-s-2.1/laguna-s-2.1-Q4_K_M.gguf \
--host 127.0.0.1 --port 8000 \
--ctx-size 8192 -ngl -1 --jinja -fa on \
--alias local-laguna
Jury fix this tick
- SPARK primary serve / DFlash example / llama-bench:
-ngl 99→-ngl -1 - Scoreboard dual gen claim closed: quote ~21.47 only
Verdict
DRY PASS — serve path+scoreboard dual-claim gaps closed.
Remaining stranger risk: first-time CUDA build time + ~96GB weight pull — documented, not blockers of path correctness. HF tip re-upload after this fix is separate (docs-only).