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aare/python
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deck: identify Test3 as the CPU/CPU divergence channel
Slide 30 reported an 8/11 cluster mismatch between ClusterFinder and
ClusterFinderFrozen without naming its cause. Two experiments now do.
Instrumented: 974 divergent pixels partition onto the three decisions with
no remainder -- Test1 619 flips / 0 clusters, Test3 347 / 11, local-max gate
8 / 8. Ablated: the 11 go to exactly zero. Corrects a claim the data refuted
-- Test1 initiates independently, ~7x slower, and never creates a cluster.

AARE_BRANCH_TRACE defaults to 0 and folds away at compile time, so the CPU
baseline the deck quotes is unaffected. AARE_TEST3_ENABLED defaults to 1.

New annex A7 (2 slides): part 1 restores the third test slide 4 omits and
derives c3 from variance addition; part 2 carries the measurement.

fig_test3 painted a completed branch map with a "scan is here" cursor over
it -- now the finished frame, arrows meaning raster order, shadow given its
own fill so a photon stops looking 3x4 wide, frozen in red so amber keeps
one meaning. fig_overlap_9x9: row spacing now clears the tag, not the lane.

New docs/deck/QA.md: the code and algorithm questions this raised, with
where each is settled. Also retired 3 figures placed on no slide; annex
count in report and README was stale (6/53, now 7/55).
2026-08-26 17:14:31 +02:00
..
2026-08-21 10:04:08 +02:00
2026-03-30 09:12:23 +02:00