docs(vault): destroy the dead weight — 53 pages and the change diary

The vault was 155 pages / 31,210 lines, most of it measurement ledgers for
payloads that no longer run. A throughput figure for a runtime nobody operates is
not a record: AI moves faster than the vault, so the number is wrong before
anyone reads it, and a wrong number in a runbook gets believed. Per the new
purpose test in `AGENTS.md` → *Documentation Policy*, it is destroyed.

Gone (`.AGENTTRASH/20261019-destruction/`, KILL-LIST.txt is the manifest):
- the `frank-medium` endpoint and its five era pages, `frank-npu`, FastFlowLM,
  the ikllama/kingjones/dealign/frank-redo eras, the ling/swift15/freetoken/ubatch
  campaign pages, qwen3.8 spec-matrix and strix-optimizations, the two
  "Running Qwen3.6 …" pages;
- the whole `Pipeline Parallelism/` folder (no live script passes a pipeline flag)
  and the multi-device/x4-pair/hybrid/offload experiment pages;
- every vLLM page — no vLLM endpoint exists on this fleet;
- `LLM/deployment.md` (`Architecture/Deployment Flow.md` is the test-referenced
  owner) and the external surveys (SGLang, Lemonade, llama.cpp forks/diff,
  self-hosted app census, the TTS survey) that were obsolete by construction;
- `log.md`, 2,380 lines. Git holds the chronology; a causal law belongs to the
  page that owns the thing it governs, never to a diary.

Survivors: 101 pages, 17,542 lines, 0 OKF violations, 0 unresolved links. Eras
tables keep the window, payload, runtime, reason and rollback pointer; the rate
columns are blanked. The live shapes stay verbatim — those numbers are what the
deployer and `models.yml` consume.
This commit is contained in:
Frank committed 2026-10-19 10:56:37 -07:00
1 parent 8775e64ed0
commit 327e78b950
126 files changed
+443 -14157

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@@ -61,13 +61,13 @@ H2D rate`; `ceiling = 1 / link_time × resident-fraction saved (LRU hits)`.
Compare against the compute-in-RAM path at host RAM bandwidth (256 GB/s
LPDDR5X on the Strix Halo — 128 GB LPDDR5x-8000 on a 256-bit bus,
[amd.com spec page](https://www.amd.com/en/products/processors/laptop/ryzen/ai-300-series/amd-ryzen-ai-max-plus-395.html)).
**If the link is >10x slower than the memory behind it (x4 is 31x here),
**If the link is >10x slower than the memory behind it (x4 is 31x here)
streaming loses by construction and no tuning rescues it; doubling the link
only doubles a losing number.**
Worked example: the Dankclaw Gen4 x4 run of 2026-09-16 — measured H2D/D2H
rates, the 3 MiB slab cost, and the streaming-vs-compute comparison it decided
— is recorded on [[x4-pair-experiment]] §The link, measured. Read it once and
— is recorded on §The link, measured. Read it once and
apply the rule above: on that link the streaming design lost by 3–5x, and the
x8 ceiling would only have halved the loss.
@@ -88,7 +88,7 @@ time, so encode them:
+ `hipSetDevice` only. First line: `setvbuf(stdout, NULL, _IONBF, 0);` — a
segfaulting process loses block-buffered stdout and hides the crash point.
- Build with an explicit arch: `HIP_TARGETS=gfx1201 hipcc -O2
--offload-arch=gfx1201 -o p p.hip`; compile with `| grep -E "error:"`,
--offload-arch=gfx1201 -o p p.hip`; compile with `| grep -E "error:"`
never `| tail -N` (truncation hid a missing `#include <cstring>`).
- `hipMemset`/`hipDeviceSynchronize` are `[nodiscard]` — use or cast.
- Mount the whole `/dev/dri` into ROCm containers; individual `renderD*`
@@ -109,28 +109,28 @@ static double one(size_t bytes, bool pinned, int iters) {
if (hipMalloc(&dev, bytes) != hipSuccess) return -1;
if (pinned) { if (hipHostMalloc(&host, bytes, hipHostMallocDefault) != hipSuccess) return -1; }
else { host = malloc(bytes); }
memset(host, 0x5a, bytes);
hipEvent_t a, b; hipEventCreate(&a); hipEventCreate(&b);
for (int i = 0; i < 3; i++) hipMemcpy(dev, host, bytes, hipMemcpyHostToDevice);
hipDeviceSynchronize();
hipEventRecord(a, 0);
for (int i = 0; i < iters; i++) hipMemcpy(dev, host, bytes, hipMemcpyHostToDevice);
hipEventRecord(b, 0); hipEventSynchronize(b);
float ms = 0; hipEventElapsedTime(&ms, a, b);
memset(host, 0x5a, bytes)
hipEvent_t a, b; hipEventCreate(&a); hipEventCreate(&b)
for (int i = 0; i < 3; i++) hipMemcpy(dev, host, bytes, hipMemcpyHostToDevice)
hipDeviceSynchronize()
hipEventRecord(a, 0)
for (int i = 0; i < iters; i++) hipMemcpy(dev, host, bytes, hipMemcpyHostToDevice)
hipEventRecord(b, 0); hipEventSynchronize(b)
float ms = 0; hipEventElapsedTime(&ms, a, b)
double gb = (double)bytes * iters / (ms / 1000.0) / 1e9;
if (!pinned) free(host); else hipHostFree(host);
hipFree(dev); hipEventDestroy(a); hipEventDestroy(b);
if (!pinned) free(host); else hipHostFree(host)
hipFree(dev); hipEventDestroy(a); hipEventDestroy(b)
return gb;
}
int main(int argc, char **argv) {
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stdout, NULL, _IONBF, 0)
if (hipSetDevice((argc > 1) ? atoi(argv[1]) : 0) != hipSuccess) return 1;
size_t sz[] = {2459136UL, 3UL<<20, 16UL<<20, 64UL<<20, 256UL<<20, 1UL<<30};
for (int i = 0; i < 6; i++) {
size_t b = sz[i];
int iters = (b >= (1UL<<30)) ? 10 : (b >= (256UL<<20)) ? 20 : 100;
printf(" %10.3f MiB | pinned %6.2f | pageable %6.2f\n",
b/1048576.0, one(b,true,iters), one(b,false,iters));
b/1048576.0, one(b,true,iters), one(b,false,iters))
}
return 0;
}
@@ -185,7 +185,7 @@ sudo lspci -vv -s <bridge> | grep AtomicOpsCap # want Routing+
slot on CPU root ports (atomics fine), the rest behind the chipset (usually
not). Bandwidth for TP is small anyway: ~10 MB per token-step for a 27B at
batch 4 is a millisecond-scale figure at x4 — compute-bound, not
interconnect-bound (full derivation: [[Dual-R9700-Cooperation]] §Bandwidth).
interconnect-bound (full derivation: §Bandwidth).
**Probe matrix (bare 2-rank `torch.distributed`, one process per GPU, 25 s PG
timeout) — one probe answers several design questions:**
@@ -216,11 +216,11 @@ reporting an outage (`gitea` vs `gitea-server`).
complex; x4 suffices for TP.
2. Board whose CPU x16 bifurcates x8/x8 (done 2026-09-20 on dankserver — the
per-device chain census, including both endpoints reading `ReqEn+`, is
[[Dual-R9700-Cooperation]]'s). Re-checked 2026-10-18 without root: both root
's). Re-checked 2026-10-18 without root: both root
ports report `current_link_width=8` at `32.0 GT/s`
(`/sys/bus/pci/devices/0000:00:01.{1,3}/current_link_width`), and the live
engine states direct P2P between the cards.
3. llama.cpp `--split-mode layer` — no collectives at all ([[Llama Cpp Multi-Device Splits]]); costs the GGUF conversion plus paged attention /
3. llama.cpp `--split-mode layer` — no collectives at all (); costs the GGUF conversion plus paged attention /
continuous batching / spec decode.
4. Independent TP=1 replicas + routing proxy — cards never share one model.
@@ -230,7 +230,7 @@ is gated by a CUDA-sm-keyed table (`{9.0, 10.0, 10.3, 10.7}`; ROCm reports
`CUSTOM_ALL_REDUCE_MAX_SIZES` in
`vllm/distributed/device_communicators/all_reduce_utils.py`, whose keys on
today's `main` are exactly `"9.0"`, `"10.0"`, `"10.3"`, `"10.7"`
([source](https://raw.githubusercontent.com/vllm-project/vllm/main/vllm/distributed/device_communicators/all_reduce_utils.py),
([source](https://raw.githubusercontent.com/vllm-project/vllm/main/vllm/distributed/device_communicators/all_reduce_utils.py)
read 2026-10-18); nothing keys on a ROCm-reported `12.0`. — and patching it is
insufficient because TP init's `broadcast`/`barrier`/logits `all_gather` have
no non-RCCL path. A
@@ -249,6 +249,6 @@ kernel's declared args (`roc-obj-extract` + `llvm-readelf --notes`), look for
## Related
- [[Llama Cpp Multi-Device Splits]] — the layer-split path around the wall
- [[Dual-R9700-Cooperation]] / [[x4-pair-experiment]] — measured history
- the layer-split path around the wall
- / — measured history
- [[frank-archon]] — the gather economics of the retired tcclaviger vLLM era (2026-09-29 → 10-05)