a9da65e put the raise inside the serve script, which runs as `User=dank`: the
knob is root-owned 0644, so `-w` is false and the write silently failed — the
gate printed its refusal on a cap it had just failed to move. The privileged
path is systemd's `+` prefix: `ExecStartPre=+scripts/ttm-preflight.sh --raise`
runs as root even under `User=`, before ExecStart, so `Restart=always` can
never outrun it. The lib is now also executable (`--raise` sources the env file
and verifies), and keeps a `sudo -n` fallback for a human running the gate from
a shell.
Seam: the refusal cases run with a PATH that has `cat`+`bash` and NO `sudo`
(root writes a 444 file, so a passwordless dev box would have tested nothing),
and both now assert the gate's own exit 1, not merely non-zero. New seam covers
the unit line and the `--raise` entry point end to end (writable knob -> raised,
no args -> usage exit 2).
The 2026-10-12 23:17 power failure reset /sys/module/ttm/parameters/pages_limit
from the manual 2026-10-05 raise (200 GiB) back to the kernel default (half of
RAM = 125,988 MiB), below the pinned-RAM ledger floor of 150,000 MiB. The serve
script's preflight named the refusal and exited 1; Restart=always re-ran it
6,919 times over ~20 hours and frank-archon served nobody.
scripts/ttm-preflight.sh (sourced by the serve script) now RAISES the knob
itself before refusing: the unit is root, the knob is a 0644 root module
parameter, and the cap is a runtime knob whose default is half of RAM — so a
manual sysfs write is not a repair procedure, it is a countdown to the next
reboot. FRANK_ARCHON_TTM_TARGET_MIB=204800 records the host ceiling; the gate
re-reads the cap after writing and only then refuses, so a knob the kernel
will not move is still a named failure.
Shape change (Frank's call): FOUR decode slots x 200,000 tokens with fp8
(quantized) KV. The pool must back seqs x max-model-len, so fp8 is what funds
the fourth slot: at bf16 the four slots cost 11,679 MiB of pool and would cut
the resident expert slab to 17,441 MiB (-33 %); at fp8 they cost 6,601 MiB, so
the pool stays 6,912 MiB (predicts 843,566 tokens), the VRAM pair stays at the
measured 29,120 MiB/card ceiling, the weights slab and the 44 GiB host pool are
untouched, and the fused TP all-reduce rides 4 x (1+2) = 12 rows, inside the
25-row bound where the wht6 wire is bit-exact.
Frank