Files
foxhunt/crates
jgrusewski e2bf655be2 fix: order diversity 1/3→3/3 — three root causes found and fixed
1. expected_q_kernel layout mismatch: cuBLAS writes branch-major logits
   [Branch0: B×b0×NA | Branch1: ...] but kernel read sample-major
   [Sample0: 12×NA | Sample1: ...]. Fixed to use branch_logit_offset
   accumulator matching cuBLAS output layout.

2. Duplicate expected_q_kernel.cu deleted — single implementation in
   experience_kernels.cu. Trainer loads from experience_kernels.cubin.

3. Monitoring num_actions=7 (old 7-level exposure) → 9 (dir×mag = 3×3).
   Actions with dir*mag≥7 silently dropped from order/urgency counts,
   making it appear only 1 order type was active.

Result: Action diversity 15/81 (18.5%) → 45/81 (55.6%), order=3/3.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-11 23:34:53 +02:00
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