Export tasks interleave with CPU tile jobs on the existing pool. Slow-dispatch keys
are logged (>5 ms, with -Timeline).
My runs outside the sandbox (Step21.exe, marker removed first, interleaved, GPU with
-Timeline):
CPU 1.356 / 1.321 / 1.277 s
GPU 1.453 (marker miss, 0 GPU tiles) / 1.249 / 1.216 / 1.217 s (match)
Export now starts at 686 ms in run c (was ~850), but the whole view is unchanged
(1.216 s): from first input (721 ms) to ready (1,216 ms) the GPU path spends ~500 ms
wall for ~255 ms of GPU timestamps. In runs b/d the output pool itself began late
(~860-875 ms). Slow tiles: (0,-6,-5,lod1) 28.5 ms, (-4,-15,-3,lod0) 11.3 ms,
(-3,-13,-2,lod0) 8.2 ms, all ordinary near-detail tiles.
Audits: hashes w1/w8, walk 5,642/5,642, near 960 / far 1,114 0 diffs vs CPU and
WARP, thin 353, survival 6.13 GiB, ten captures as step 18.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MmSoF64BbRFmk9C3p1VsBJ
Fr0zkaandClaude Opus 5.5
38f6009200
