Robert Allan JamesandClaude Sonnet 5
66ba21adb4
doe_log.c's per-heartbeat-tick CSV gains two columns: fleet_k_q48 (vm_physics_fleet_heat_sum() over ALL live VMs -- the genuine fleet-wide conservation invariant K, not reconstructable from the 3 named-Tripod- member heat columns already logged, which omit every identity VM's own heat) and fleet_conserved (vm_physics_conserved() as 0/1). Requested explicitly after the first heartbeat-telemetry analysis pass (analysis-20260912/) omitted K entirely. Kernel rebuilt on all three architectures, full 3x9x3 campaign rerun (results-20260912-with-k/). K = 1.0000000000 (Q48.16 raw 65536) on every one of 775 heartbeat-tick observations, sd(K) = 0, 100% fleet_conserved, across amd64/aarch64/riscv64, nine identities, three replicates -- zero deviation. Also a free regression check on both recent Stadium fixes (§XVI/§XVII): neither disturbed the reservoir-transfer accounting K depends on. Found and fixed a tooling wrinkle along the way: fleet_conserved, being the CSV row's very last field with nothing after it to bound a regex match, can have a resumed trial digit merge into it with zero separator on the wire -- combine.py now derives it from fleet_k_q48 directly (same epsilon vm_physics_conserved() uses) instead of trusting the raw field. fleet_k_q48 itself is unaffected either way. Full analysis, discussion, and light/dark SVG->PDF figures written up as a proper LaTeX report (report-20260912/report/std79_doe_report.pdf), following experiments/bare_metal/analysis/report/bare_metal_doe_report.tex's established style -- supersedes analysis-20260912/'s markdown-only first pass as the primary deliverable for this dataset (kept, not discarded). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EXieurDfDSsDFdnSyusuWo
65 lines
3.6 KiB
Markdown
65 lines
3.6 KiB
Markdown
# std79-doe LaTeX report: the fleet conservation invariant K
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**Read `report/std79_doe_report.pdf`** — this supersedes `../analysis-20260912/`
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(the first, markdown-only pass) as the primary deliverable for this dataset.
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That first pass was correctly flagged as inadequate: it never captured K
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(the fleet-wide execution-heat conservation invariant) at all, and presented
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results as a plain markdown page rather than in this project's established
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LaTeX report style (see `experiments/bare_metal/analysis/report/` for the
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precedent this follows — same document class, packages, colour palette,
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light/dark figure pairs, abstract-first structure with headline numbers).
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## What changed to make this possible
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`src/starkernel/doe_log.c`'s per-heartbeat-tick CSV gained two new columns
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(`fleet_k_q48`, `fleet_conserved` — see the file's own header comment for
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the full 20-column schema), requiring a kernel rebuild and a fresh DoE
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campaign rerun on all three architectures
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(`../results-20260912-with-k/*-doe-raw.log` + `*-heartbeat.csv`).
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## Pipeline (same shape as `../analysis-20260912/`, extended for K)
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1. `correlate_doe.py <raw_log> <out_csv>` — per architecture, against
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`../results-20260912-with-k/{amd64,aarch64,riscv64}-doe-raw.log` →
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`{amd64,aarch64,riscv64}-correlated.csv` (committed, not scratch).
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2. `combine.py <in1.csv> [in2.csv ...] <out.csv>` → `combined.csv` (775 rows).
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Decodes `fleet_k_q48` to a plain float and **derives** `fleet_conserved`
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from `fleet_k_q48` directly (using the same epsilon
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`vm_physics_conserved()` uses, `capsule_vm_physics.c`) rather than
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trusting the raw `fleet_conserved` field — that field is
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`doe_log_tick_row()`'s very last printed column, with nothing after it
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in the row to bound a regex match against, so a resumed trial digit can
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merge into it with zero separator on the wire (confirmed live: raw
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values like `19223372036854775807` where `0`/`1` was expected). See the
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script's own comment for the full explanation.
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3. `analysis.R` (run from this directory) — computes the K result
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(trivial: one distinct value, `sd = 0`, reported directly rather than
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via a formal test — see the report's own \S5.1 for why), per-cell
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architecture × identity summaries, and two-way ANOVA for 12 secondary
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metrics; writes `charts/*.svg` (light+dark pairs, matching
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`experiments/bare_metal/analysis/analyse_bare_metal.R`'s theme
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convention) and `tables/*.csv`.
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4. SVGs converted to PDF for LaTeX via `rsvg-convert` into `report/figures/`.
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5. `report/std79_doe_report.tex`, hand-authored following
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`experiments/bare_metal/analysis/report/bare_metal_doe_report.tex`'s
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structure and conventions; compiled with `pdflatex` (three passes for
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cross-references/TOC).
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## Headline result
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$K = 1.0000000000$ (raw Q48.16 `65536`) on **every one of 775
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heartbeat-tick observations**, `sd(K) = 0`, `fleet_conserved = 1` on 100% of
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rows, across all three architectures, nine identities, and three
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replicates. Zero deviation. See the report for the full discussion,
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including why this is also a free regression check on the two Stadium
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subsystem fixes (FABRIC-3.md §XVI–XVII) that landed the same week.
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## Known limitation
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Same interleaving-correlation caveat as `../analysis-20260912/`: 1 of 27
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`run_id` markers was unrecoverable on 2 of 3 architectures this run
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(aarch64/riscv64: `run_id` 1 folded into `run_id` 0). `fleet_k_q48` itself
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is entirely unaffected by this — it's read directly at each tick regardless
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of trial attribution, so the K result does not depend on trial labeling
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being correct at all. See report §2.3/§6.4 for the full explanation.
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