Header grinding for locality on the frozen object a5d735b2 (igneum-pow identical
at base 63f4437f). BOUND: ten accepted class v4 programs over 2.6e7 header-chosen
hashes sit on the windowed random baseline at mean, min and the 1e-3/1e-4/1e-5
tails for 2 KiB rows, 8 KiB rows, 64 B lines and items, per hash and per unit,
closed form and live dataset alike; one-bit header flips move 100 percent of the
4,096 unit addresses; 2 to 4 of 16 load sites are header-predictable, none after
iteration 0. Price: the best 1-in-15 header groups run 0.09 percent faster on an
RTX A6000 (measured) and cost 15 hashes each; no grind nets 1 percent. One small
FINDING: drawn program 0x5d7cc2b09fc6922a repeats a word across two load sites in
1.55 percent of hashes (a register-amount rotate as the only write between two
loads from one register), 0.1 percent of loads, header-independent.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
