feedback_no_htod_htoh_only_mapped_pinned (tests not exempt):
- All test fixtures converted from htod_copy/dtoh_sync_copy to
MappedF32Buffer with host_slice / host_slice_mut access.
- Novelty hash buffer + projection matrix changed from
cudarc::CudaSlice<f32> + alloc_zeros to MappedF32Buffer.
feedback_no_cpu_forwards (CPU is read-only):
- Projection matrix initialization changed from host-side StdRng +
host_slice_mut writes to a one-shot GPU init kernel
(novelty_simhash_proj_init_kernel) using Philox seeded from
config.seed. No host RNG, no host writes.
feedback_no_cpu_compute_strict (saboteur multiplication):
- B1 step 5 reverted from Rust-side `read_isv_slot * scale` to
GPU-side: pass base scale + ISV pointer + slot index to the
saboteur perturbation kernel; multiplication happens on-device.
feedback_trust_code_not_docs (grad-ratio terminology):
- Spec §3.3.1 "per-component grad EMA" was wrong — SP4 grad-balancer
is per-branch (4 slots), not per-reward-component. Renamed:
reward_component_grad_ratio_compute_kernel
→ reward_component_mag_ratio_compute_kernel
REWARD_COMPONENT_GRAD_RATIO_BASE
→ REWARD_COMPONENT_MAG_RATIO_BASE
Source: existing REWARD_POPART_EMA_INDEX..+6 (per-component reward
magnitude EMAs from SP4 reward_component_ema_kernel). Semantic
equivalent for the controller's exploit/diversify blend.
feedback_no_stubs (dead parameter):
- Removed `eps_div_idx_unused` from mag_ratio kernel signature.
Saboteur engagement: missing producer specified
- Spec §3.3.1's two-reward-arrays formulation replaced with single
`saboteur_delta_reward_buf` produced by the saboteur perturbation
kernel itself (single reward computation, diff emitted as side
output). Engagement kernel signature simplified to one input array.
PNL_REWARD_MAGNITUDE_EMA_INDEX (slot 359): producer wired
- mag-ratio kernel mirrors `isv[REWARD_POPART_EMA_INDEX]` to
scratch_out[6]; chained apply_pearls_ad targets slot 359.
Replay sample kernel location specified
- graph_utility_kernels.cu:71 (gather_f32_scalar). New sibling kernel
`gather_replay_reward_with_curiosity` defined; replaces the existing
scalar gather (no legacy alias per feedback_no_legacy_aliases).
novelty_simhash_lookup runs before, novelty_simhash_update after.
A2 controller test placeholders → full GPU oracle assertions
- Three controller tests (z=0 midpoint, weight renorm, saboteur clamp)
have full mapped-pinned fixtures with assertions on weight sum,
individual values, post-clamp bounds.
Plan now passes:
- feedback_no_htod_htoh_only_mapped_pinned (tests + production)
- feedback_no_cpu_forwards (CPU never writes/computes for GPU)
- feedback_no_cpu_compute_strict (all multiplications GPU-side)
- feedback_no_atomicadd (race-tolerated non-atomic, safety documented)
- feedback_no_partial_refactor (Layer B atomic; saboteur kernel sig
change touches all callers in the same commit)
- feedback_no_stubs (no dead parameters)
- feedback_trust_code_not_docs (corrected spec terminology)
- feedback_wire_everything_up (every new field has init + producer)
- feedback_no_legacy_aliases (old gather_f32_scalar replaced, deleted)
1447 lines, +268 from previous version.
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