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auto: 2026-08-30T17:54:47Z [skip ci]

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25
content/essays/verified-inference/index.md
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@ -220,18 +220,27 @@ A profiler that only ever confirms its author is not a measurement instrument.
Predictions go out before the measurement, and get corrected in public when the
measurement disagrees — otherwise the numbers above would be worth very little.
The correction is now upstream rather than only narrated here. The original
scorecard reported roughly 950 GB per sweep of cross-shard traffic and returned
a binding verdict on interconnect; with the traffic model corrected — settlement
vectors reduce to per-shard scalars rather than shipping whole — the same
configuration moves 2.4 to 2.8 GB per sweep, and communication is negligible at
every bandwidth swept. Nearly all of the original figure was my own modeling
error. The retraction is part of the merged record, not a footnote to it.
### What is upstream, and what is not
**Merged code** — the dry-run profiler and its parts: manifest contract,
extractor, cost model, execution DAG, partition scorecard; and the RMSNorm
cost-model correction.
extractor, cost model, execution DAG, partition scorecard; the RMSNorm
cost-model correction; and, as of 30 August 2026, the calibration suite, the
machine-profile tooling, and the corrected traffic model.
**Publicly reported validation** — the B200 tape extraction and the measurements
that came out of it, recorded in the profiler pull request itself.
**Pending upstream** — the calibration suite, the machine-profile tooling, and
the remaining B200 artifacts. Until those land, treat the figures above as
reported by me rather than independently inspectable.
**Publicly inspectable evidence** — the B200 session archive, the extracted
manifests, the calibration logs, and the measured machine profile are all in the
repository. An earlier version of this section asked you to treat the figures
above as reported by me rather than independently checkable. That caveat has
been discharged: the inputs that produced them can now be read, and the
cross-checks rerun.
**On agent assistance.** Implementation was agent-assisted. I owned the research
direction, the cost-model derivation and checking, the experimental design, the

6
content/work.md
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@ -52,8 +52,10 @@ work is on proving multi-GPU, which is the ceiling on model scale, context
length, and mixture-of-experts breadth.
::: {.work-limit}
**Ongoing.** The multi-GPU work is unmerged and its results are preliminary.
Technical write-up expected Q4 2026, for review and publication.
**Ongoing.** The profiler and calibration tooling are merged upstream; the
multi-GPU figures are projections from a validated cost model rather than
measurements at that scale. Technical write-up expected Q4 2026, for review and
publication.
:::
::: {.work-entry-links}