open-standards/wai/wai-quantum-landscape-fpga/measurements/2026-11-05/PREDICTION_4core.txt
Transaction Science c1137390e2 wai-quantum-landscape-fpga: named for what it is, with its README, provenance, workflow and first measurements
The crate is wai-quantum-landscape-fpga, beside the fabric's simulated FPGA member, which has its own
workflow. The README gives the board and part as data, what the design does and refuses, what it
takes to build, the build and load steps, the checks and the power protocol. No bitstream is
distributed: the vendor tool's licence limits a bitstream holding its components to that vendor's
devices, which Apache-2.0 does not carry, so the README gives the build and the sha256 of the
bitstream measured.

measurements/2026-11-05 holds the first version's raw power logs and the predictions committed
before them, unchanged. The workflow runs the unit tests and every check against the model of the
logic on each change.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
2026-11-06 03:05:19 -05:00

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PRE-REGISTERED, 2026-11-05, written while the single-core campaign was still running on the board
and before any of its numbers had been read, and before the four-core bitstream was ever loaded.
WHY. The single-core prediction put gibbs-recall at ~5 mW, at or below the paired protocol's
floor. The notes' own lesson (FEASIBILITY_parity_2026-10-04.txt): amplify the effect, don't average
the noise. rtl/edge_multi.v puts four engines behind one port; `vqpu-edge meter <class> ... --cores 4`
runs the same job on all four at once (BroadcastPort), so the effect is ~4x while the sensor quantum
and drift stay put.
WHAT IS MEASURED. The same run/halt protocol as the single-core campaign, on the four-core
bitstream, 100 MHz, classes t0-recall and gibbs-recall.
PREDICTIONS
1. Scaling: P_dyn(4 cores) / P_dyn(1 core, this day's campaign) = 4.0, PASS range 3.4 .. 4.6 for
t0-recall. Outside it, cores do not add independently (shared clock tree, placement density,
rail), and the per-core numbers from the four-core build must not be divided by four.
2. t0-recall, four cores: 4 x 122 = 488 mW (range 240 .. 1000), i.e. four times the single-core
prediction, whatever the single-core measurement turns out to be.
3. gibbs-recall, four cores: 4 x 5 = 20 mW (range 0 .. 80). If the single-core run could not
resolve it, this is the number that can: at 20 mW and SE ~6 mW it is ~3 sigma.
LABEL. Board-level, this KV260, this (four-core) design. Per-core figures from it are the four-core
value divided by four only if prediction 1 passes.