feat(paged): add moe mmq launch trace patch

Assisted-by: Codex:gpt-5

backend/cpp/llama-cpp-localai-paged/docs/PARITY_HANDOFF.md

@@ -64,7 +64,7 @@ A lever compiled into the binary is **NOT** isolated by a runtime flag alone. It
 - **Always update the fork FIRST, in this exact order:** (1) commit the change on the `localai-paged` branch and **push it**, then (2) regenerate the LocalAI series (`backend/cpp/llama-cpp-localai-paged/patches/paged/`) from the fork via `git format-patch` (one patch per fork commit, source-only, never touching a `*.md`/dev-doc), so the series stays a **1:1, drift-free mirror** of the branch. No hand-export.
 - **NEVER edit the LocalAI `patches/paged/*.patch` files directly**, and **NEVER add a patch to the series with no corresponding fork-branch commit.** They are generated output, not source.
 - The fork branch is also **where the build and the per-path bit-exact md5 gate actually run**, so it is the **only** place a change is truly validated. A patch that lives only in the LocalAI series has never been built or gated.
-- **Mirror invariant (verify by tree hash):** applying the full on-disk series on the pin must reproduce the fork branch tree byte-for-byte. The series has **intentional gaps** (missing 0005, 0026, 0027, 0032, 0036-0039, 0045), so the patch count is not the max number; what must hold is the tree-hash equality, not the count. Current verified state: fork HEAD `20a99518a` is mirrored by worktree patch `0056-feat-cuda-trace-moe-mmq-batch-shapes.patch`; applying all `47` patch files on `0ed235ea2c17a19fc8238668653946721ed136fd` produces tree `8a7779726a81689a14f10a64523f2cc380d4801f`, exactly matching the fork.
+- **Mirror invariant (verify by tree hash):** applying the full on-disk series on the pin must reproduce the fork branch tree byte-for-byte. The series has **intentional gaps** (missing 0005, 0026, 0027, 0032, 0036-0039, 0045), so the patch count is not the max number; what must hold is the tree-hash equality, not the count. Current verified state: fork HEAD `c78e537b5` is mirrored by worktree patch `0057-feat-cuda-trace-moe-mmq-launch-shapes.patch`; applying all `48` patch files on `0ed235ea2c17a19fc8238668653946721ed136fd` produces tree `4eae628e4ba6f2defa14a19d19f7e4abef9a2647`, exactly matching the fork.
 
 ### 2.6 Bench hygiene gates
 - **NEVER set `LLAMA_MAX_BATCH_TOKENS` in benches** (the harness explicitly logs "NO LLAMA_MAX_BATCH_TOKENS").
@@ -322,11 +322,11 @@ Use this harness for future current-stack GB10 snapshots. Do not reuse
 `~/bench/combined_definitive.sh` unless it is first ported away from stale
 `~/llama-paged-dev` paths and old lock assumptions.
 
-Phase 22 re-verified the patch-series mirror invariant after patch `0055`:
+Phase 31 re-verified the patch-series mirror invariant after patch `0057`:
 applying every LocalAI `patches/paged/0*.patch` with strict `git apply` on top of
 Makefile pin `0ed235ea2c17a19fc8238668653946721ed136fd` produced tree
-`5bdbf8ea3d750fe6fa1f85175fd6357d36222edb`, exactly matching fork branch
-`localai-paged` HEAD `20a99518a feat(cuda): trace moe mmq batch shapes`.
+`4eae628e4ba6f2defa14a19d19f7e4abef9a2647`, exactly matching fork branch
+`localai-paged` HEAD `c78e537b5 feat(cuda): trace moe mmq launch shapes`.
 
 Phase 24 extended `paged-current-serving-snapshot.sh` to write the snapshot
 hardware report. DGX dry run passed at
@@ -405,6 +405,20 @@ grouped-MMQ calls split into 1200 decode-like calls (`ncols_max <= 128`) and
 gates stayed green: MoE `8cb0ce23777bf55f92f63d0292c756b0`, dense
 `5951a5b4d624ce891e22ab5fca9bc439`, `MUL_MAT_ID` `806/806`.
 
+Phase 31 added patch `0057` for default-off grouped-MMQ launch tracing.
+Artifact: `/home/mudler/bench/phase31_mmq_launch_trace/20260701_064424`.
+Fork commit: `c78e537b5 feat(cuda): trace moe mmq launch shapes`; DGX mirror
+commit: `8b75905e9`. The trace adds `[LLAMA_MOE_MMQ_LAUNCH]` lines under
+`LLAMA_MOE_MMQ_SHAPE_TRACE=<n>`, recording `ntiles_dst`, `stream_k_blocks`,
+tile efficiency, `fixup`, `ntx/nty/ntzw`, and compiled `mmq_x/mmq_y`. Default
+off, trace-enabled, and post-serving gates stayed green: MoE
+`8cb0ce23777bf55f92f63d0292c756b0`, dense
+`5951a5b4d624ce891e22ab5fca9bc439`, `MUL_MAT_ID` `806/806`. The n128 serving
+trace showed decode-like `4800/4800` and prefill-like `4920/4920` launch lines
+with `fixup=0` and `stream_k_blocks == ntiles_dst`. Do not pursue a
+no-fixup/no-stream-k shortcut for this workload; the remaining grouped-MMQ work
+is structural small-M kernel work.
+
 ---
 
 ## 5. METHODOLOGY LESSONS (so you do not repeat the mistakes)
@@ -454,15 +468,15 @@ Only pursue if (a)+(b) are not options and someone explicitly wants the residual
 ## 7. KEY FILE / ARTIFACT INDEX
 
 ### Fork (canonical source of truth)
-- Local canonical fork: `/home/mudler/_git/llama.cpp`, branch **`localai-paged`**, HEAD `20a99518a39acbb4474fa9c97121fc7b9f07c1ef` ("trace moe mmq batch shapes", patch `0056`).
-- DGX current clean mirror/build tree: `dgx:~/llama-phase6-source`, HEAD `826c97a05` with the Phase 29 shape-trace patch applied and committed; Phase 20/26/27 artifacts still record their historical source hashes.
+- Local canonical fork: `/home/mudler/_git/llama.cpp`, branch **`localai-paged`**, HEAD `c78e537b56e3446f8aa645c6700aacf263639bd8` ("trace moe mmq launch shapes", patch `0057`).
+- DGX current clean mirror/build tree: `dgx:~/llama-phase6-source`, HEAD `8b75905e9` with the Phase 31 launch-trace patch applied and committed; Phase 20/26/27 artifacts still record their historical source hashes.
 - Historical DGX dev tree: `dgx:~/llama-paged-dev`, branch **`paged`**, HEAD `a7d439e8ce6990eb09721223c975da4e49d8d136` ("GDN CONFIG C (M8) - bf16 Kc/Qc"). It is an old experimental tree and must not be treated as canonical.
 
 ### LocalAI worktree
 - Path: `/home/mudler/_git/LocalAI/.claude/worktrees/feat+paged-attention`, branch `worktree-feat+paged-attention` (currently 246 ahead, 31 behind `origin/master`; recompute before reporting).
 - Backend dir: `backend/cpp/llama-cpp-localai-paged/` (`Makefile` thin wrapper, `package.sh`, `run.sh`, `README.md` ~44 KB canonical, `docs/`, `patches/paged/`).
 - `docs/`: `VLLM_PARITY_FINAL.md` (authoritative record), `VLLM_PARITY_LEVER_MAP.md` (working brainstorm, profile-validated section), `DECODE_SERVING_SCOPE.md`, `PREFILL_GEMM_SCOPE.md`, `PREFILL_GEMM_RESULTS.md`, `TENSORCORE_GDN_SCOPE.md`, `TENSORCORE_GDN_BUILD_PLAN.md`, `ACCELERATOR_PORTING_SCOPE.md`, `UPSTREAM_LAYER2_SCOPE.md`, `LOCALAI_LLAMACPP_BACKEND_PLAN.md`, `PAGED_BITEXACT_NOTE.md`, `PATCH_MAINTENANCE.md`, `final_benchmark.csv`, `paged-burst-bench.cpp`, `paged-reclaim-unit.cpp`, 3 PNGs, and this `PARITY_HANDOFF.md`.
-- `patches/paged/`: **46** `.patch` files spanning 0001-0055 with intentional gaps (missing 0005, 0026 [dropped ssm_bf16_tau], 0027, 0032, 0036-0039, 0045). Core paged-KV 0001-0012; decode-first scheduler 0013/0016; serving graph reuse 0040/0041; prefill fusions 0042/0044; SSM/GDN decode 0018-0022/0028; MoE NVFP4 quant 0023/0025/0043; FP4-MMA/Marlin scaffolds 0033/0034/0035 (default-off); GDN tensor-core prefill 0031 -> 0046 (geometry gate) -> 0047 (f32-only M5, default-on under paged KV); W4A16 packed metadata/shape/padding is 0048-0050; MoE safety tests are 0051-0053; MTP backend-sampling safety is 0054; speculative shape trace is 0055.
+- `patches/paged/`: **48** `.patch` files spanning 0001-0057 with intentional gaps (missing 0005, 0026 [dropped ssm_bf16_tau], 0027, 0032, 0036-0039, 0045). Core paged-KV 0001-0012; decode-first scheduler 0013/0016; serving graph reuse 0040/0041; prefill fusions 0042/0044; SSM/GDN decode 0018-0022/0028; MoE NVFP4 quant 0023/0025/0043; FP4-MMA/Marlin scaffolds 0033/0034/0035 (default-off); GDN tensor-core prefill 0031 -> 0046 (geometry gate) -> 0047 (f32-only M5, default-on under paged KV); W4A16 packed metadata/shape/padding is 0048-0050; MoE safety tests are 0051-0053; MTP backend-sampling safety is 0054; speculative shape trace is 0055; MoE MMQ selector/launch traces are 0056-0057.
 
 ### Bench artifacts (DGX)
 - `~/bench/COMBINED_DEFINITIVE.txt` (+ `.log`, `.done`, `combined_definitive.sh`, `combined_definitive.out`) - historical same-session both-engine run.
@@ -475,6 +489,7 @@ Only pursue if (a)+(b) are not options and someone explicitly wants the residual
 - `~/bench/phase28_mmq_occupancy/20260701_040450` - NVFP4 MMQ occupancy build-knob A/B; `MINBLOCKS=2` gate-safe but serving-regressed, `MMQ_Y=64` compile-rejected.
 - `~/bench/phase29_mmq_shape_trace/20260701_042428` - default-off MoE MMQ shape trace patch `0056`; CUDA build plus default/trace md5 gates green.
 - `~/bench/phase30_mmq_shape_serving/20260701_043300` - live n128 serving MMQ shape distribution from patch `0056`; post-run md5/op gates green.
+- `~/bench/phase31_mmq_launch_trace/20260701_064424` - default-off MoE MMQ launch trace patch `0057`; default/trace/post-serving md5 gates green; n128 launch trace rejects stream-k/fixup shortcut (`fixup=0`, `stream_k_blocks == ntiles_dst`).
 - Per-engine logs `~/bench/COMBINED_{paged,vllm}_{MOE,DENSE}_server.log`; `~/bench/BENCHMARK_PROGRESS.md`.
 - Graph-node-traced high-N profiles: `~/highN_prof2/*.nsys-rep` (paged npl=256), `~/highN_vllm/*.nsys-rep` (vLLM), 2026-06-30.
 - A/B dirs: `~/bench/marlin_gate/`, `~/bench/gdn_p1_ab/`.
@@ -487,8 +502,8 @@ Only pursue if (a)+(b) are not options and someone explicitly wants the residual
 
 ### Discrepancies to flag / resolve (carried verbatim from the gather, including UNVERIFIED labels)
 1. **Pin prose reconciled in this worktree.** Makefile line 52 `LLAMA_VERSION?=0ed235ea2c17a19fc8238668653946721ed136fd` is authoritative and matches the local fork merge-base. Hard rule: the paged pin must equal the stock `llama-cpp` pin (shared `grpc-server.cpp`); a bump to `c299a92c` once broke the grpc-server link despite being bit-exact and was reverted. Trust the Makefile when building.
-2. **Current fork/mirror are clean and verified.** Local fork HEAD is `20a99518a`, DGX clean mirror HEAD is `826c97a05`, and Phase 29 re-proved the LocalAI patch series tree equals the fork tree (`8a7779726a81689a14f10a64523f2cc380d4801f`). The old `llama-paged-dev` tree is historical only.
-3. **Worktree patch series is tracked through 0056.** The only current untracked path in this worktree is `.claude/`.
+2. **Current fork/mirror are clean and verified.** Local fork HEAD is `c78e537b5`, DGX clean mirror HEAD is `8b75905e9`, and Phase 31 should be treated as the current patch-series tip. The old `llama-paged-dev` tree is historical only.
+3. **Worktree patch series is tracked through 0057.** The only expected unrelated untracked path in this worktree is `.claude/`.
 4. **`sm_121a` is not in the worktree build files** - it lives only in the DGX experimental build scripts (`gdn_cc.sh`, `gdn_bv_build.sh`, `paged-build.sh`); mainline uses arch `121`. **UNVERIFIED** whether the shipped CI Dockerfile build path injects `121a` for the FP4-MMA kernels (`Dockerfile.llama-cpp-localai-paged` does not hardcode a CUDA arch).
 5. **The `0921716...` paged-MoE md5 open item.** `COMBINED_DEFINITIVE.txt` records `PAGED_GATE_MD5=0921716cd0582b5d15af8c362b811d00` for MoE, but a full doc/patch/`git log -S` grep of the worktree found **no** occurrence of `0921716...` in any committed source; the committed canonical paged-MoE gate is `8cb0ce23`. Treat this as **unreconciled**: the documented, KL-validated paged-MoE gate remains `8cb0ce23`, and any paged-MoE divergence (including `0921716`) must be KL-validated against the f16 reference before being accepted as benign, never on assertion alone. The `0921716` value is **UNVERIFIED** as a sanctioned gate; do not adopt it as canonical without re-running the KL gate. The **dense** run is symmetric: `COMBINED_DEFINITIVE.txt` records `PAGED_GATE_MD5=ecfe924dee6c5622c149f419ff2a6481` for dense, which likewise differs from the canonical dense gate `5951a5b4`. Both CDEF `PAGED_GATE_MD5` values come from the `combined_definitive.sh` harness's own gate command, NOT the canonical bit-exact gate command in section 3.3, which is why they diverge from the committed `8cb0ce23` / `5951a5b4`; neither is a sanctioned gate and both must be KL-validated before being treated as benign.