jgrusewski
5e16b67ca6
fix(sp11): B1b follow-up — add slot 360 for popart-component mag EMA
...
Per spec §4 amendment at 52c0b7521 on main: B1b smoke surfaced that
SP11 mag-ratio canary was reading slot 63 (REWARD_POPART_EMA_INDEX)
which is overloaded — pre-SP11 PopArt's normalization input (total
reward mag EMA) was the same value as popart-component magnitude
because composition was inline accumulation. B1b decomposition exposed
the overload; controller emitted w_pop ≈ 2.0 based on contaminated
ratio → 10× sharpe drop in smoke.
Resolution:
- Allocate ISV slot 360 = POPART_COMPONENT_MAG_EMA_INDEX
- Add popart_component_per_sample mapped-pinned buffer + write site
in experience_env_step at the r_popart assignment
- New popart_component_ema_kernel.cu writes slot 360 (single-block
block-tree-reduce per feedback_no_atomicadd)
- mag-ratio canary kernel signature changes from single
popart_ema_base_slot to (popart_specific_slot, cf_others_base_slot)
pair so it reads non-contiguous slot 360 + slots 64..68
- Reset registry: sp11_popart_component_mag_ema entry + dispatch arm
- Slot 63 (PopArt's input) UNCHANGED — pre-SP11 invariant preserved
ISV total: 360 → 361. SP5_SLOT_END = 361. SP5_PRODUCER_COUNT = 187.
cargo check + build clean; SP11 GPU oracle tests pass (6/6 including
updated mag_ratio test with 2 slot-index args); sp5_isv_slots layout
tests pass (10/10 with 185 unique slots / 187 linear span); state
reset registry tests pass (4/4 with new sp11_popart_component_mag_ema
entry + dispatch arm). Local multi_fold_convergence smoke gated on
data volume (175k bars on local fxcache vs 10-month walk-forward
requirement); validation deferred to L40S Argo run on PVC data per
the spec's pass criterion.
2026-05-04 10:29:47 +02:00
..
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