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[AZ-302] C7 ThermalStatePublisher — jtop/NVML 1 Hz background poller

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Implements AZ-297 InferenceRuntime's thermal_state() side: a singleton
background-thread publisher that polls jtop (preferred) or pynvml
(fallback) at config.thermal_poll_hz, stores an atomic ThermalState
snapshot, and emits c7.thermal_transition FDR records on every throttle
flip with a WARN log on entry and an INFO log on exit. Default-safe on
TelemetryUnavailableError per Invariant I-6 with a 1-Hz rate-limited
WARN.

Sources return a raw ThermalReading; the publisher stamps measured_at_ns
via its injected Clock so _JtopSource / _PynvmlSource stay clean of
direct time.* calls (Invariant 2). _poll_once is the deterministic test
seam — start() spawns the production thread.

- c7.thermal_transition registered in fdr_client.records KNOWN_PAYLOAD_KEYS
- [telemetry] optional dep group (jetson-stats, pynvml) added to pyproject
- 14 unit tests (AC-1..AC-6, AC-8, NFR-default-safe, structural)
  green; AC-7 / AC-1 microbench / NFR-perf-poll Tier-2 deferred
- full unit suite: 1140 passed, 11 expected Tier-2/CUDA skips

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Oleksandr Bezdieniezhnykh
2026-05-12 10:33:37 +03:00
parent 59f56c032f
commit 49a67f770d
9 changed files with 1175 additions and 2 deletions
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_docs/_autodev_state.md
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@@ -6,9 +6,9 @@ step: 7
name: Implement
status: in_progress
sub_step:
phase: 13
phase: 7
name: archive-and-loop
detail: "batch 25/cycle1 complete: AZ-301 → In Testing, archived to done/. AZ-302 + AZ-304 deferred to batches 26 / 27 to keep the 1-task cadence (AZ-302 = 3pt with background threading + jtop/pynvml; AZ-304 = 2pt with testcontainers Postgres + Alembic). 14 unconditional AC tests + 1 Tier-2 AC-8 skip. Suite: 1134 passed / 11 skipped. 17 tasks total ready overall (AZ-300 + AZ-301 removed)."
detail: "batch 26/cycle1 complete: AZ-302 (ThermalStatePublisher, 3pt) implemented and tests green (1140 passed, 11 Tier-2/CUDA skipped). Added ThermalStatePublisher + ThermalSource Protocol + ThermalReading DTO + _JtopSource/_PynvmlSource backends; registered c7.thermal_transition in FDR schema; new [telemetry] optional dep group in pyproject.toml. Spec moved to done/ with as-built notes; cycle report at _docs/03_implementation/batch_26_cycle1_report.md. Ready to push commit + compute batch 27 (AZ-304 C6 Postgres schema next, 2pt) plus the 15 other ready tasks."
retry_count: 0
cycle: 1
tracker: jira