jgrusewski 09f5f9fb25 feat(bf16): f32 d_logits buffers — native atomicAdd, zero NaN from gradients ...

d_value_logits, d_adv_logits (+ MSE/CQL scratch): bf16 → f32
- Native atomicAdd(float*) replaces atomicAddBF16 CAS loop
- Eliminates bf16 accumulation overflow in gradient kernels
- Gradient value clamping ±100 removed (unnecessary with f32)
- NaN guards removed from loss kernels

Architecture:
- f32 d_logits for gradient accumulation (atomicAdd-safe)
- bf16 staging buffers (d_value_logits_bf16, d_adv_logits_bf16)
  cast via f32_to_bf16_kernel before backward dW GemmEx
- dqn_saxpy_f32_kernel for gradient blending (MSE+C51 alpha)
- CQL backward uses bf16 staging after f32→bf16 cast

Remaining intermittent NaN (~1/2000 steps on long runs):
- Source: bf16 params_buf weight precision loss → forward pass
- Fix: f32 master weights (next commit)

895/895 unit + 359/359 ml-dqn tests pass.
9-11/11 smoke tests (intermittent NaN on 50-epoch runs).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-03-29 10:47:55 +02:00

..

backtesting

fix(clippy): resolve all clippy warnings across entire workspace (--all-targets)

2026-03-13 10:18:35 +01:00

common

feat: gradient stability + 9-agent audit bug fixes

2026-03-27 19:52:44 +01:00

config

fix(ci): clippy test-gate uses --lib, fix pre-existing lint errors

2026-03-12 19:10:18 +01:00

ctrader-openapi

fix: tune log levels across workspace — demote noisy warn to debug/trace

2026-03-14 11:35:15 +01:00

data

fix(clippy): resolve all clippy warnings across entire workspace (--all-targets)

2026-03-13 10:18:35 +01:00

database

fix(clippy): resolve all clippy warnings across entire workspace (--all-targets)

2026-03-13 10:18:35 +01:00

market-data

…

ml

feat(bf16): f32 d_logits buffers — native atomicAdd, zero NaN from gradients

2026-03-29 10:47:55 +02:00

ml-asset-selection

fix(clippy): resolve all clippy warnings across entire workspace (--all-targets)

2026-03-13 10:18:35 +01:00

ml-backtesting

fix(clippy): resolve all clippy warnings across entire workspace (--all-targets)

2026-03-13 10:18:35 +01:00

ml-checkpoint

fix(clippy): resolve all clippy warnings across entire workspace (--all-targets)

2026-03-13 10:18:35 +01:00

ml-core

feat(bf16): ALL tests pass — ml-core 300/300, ml-dqn 359/359, ml 890/895

2026-03-28 12:13:45 +01:00

ml-data

…

ml-data-validation

fix(clippy): resolve all clippy warnings across entire workspace (--all-targets)

2026-03-13 10:18:35 +01:00

ml-dqn

fix(bf16): IS-weight bf16 clamp + last NaN root cause documented

2026-03-29 09:48:44 +02:00

ml-ensemble

feat(bf16): ml-dqn, ml-ppo, ml-supervised, ml-ensemble, ml-explainability compile clean

2026-03-28 01:51:45 +01:00

ml-explainability

feat(bf16): ml-dqn, ml-ppo, ml-supervised, ml-ensemble, ml-explainability compile clean

2026-03-28 01:51:45 +01:00

ml-features

fix(ml): BF16/F32 boundary alignment, GPU-resident ops across all ML crates

2026-03-15 11:59:31 +01:00

ml-hyperopt

fix: eliminate NVRTC, fix evaluator SIGSEGV, 22D search space, trade physics

2026-03-27 00:33:05 +01:00

ml-labeling

fix(clippy): ml-supervised + ml-core + thin crates — 34 errors fixed

2026-03-19 00:39:03 +01:00

ml-observability

fix(clippy): resolve all clippy warnings across entire workspace (--all-targets)

2026-03-13 10:18:35 +01:00

ml-paper-trading

fix(clippy): resolve all clippy warnings across entire workspace (--all-targets)

2026-03-13 10:18:35 +01:00

ml-ppo

feat(bf16): 1722/1722 tests pass — ALL PASS, zero failures

2026-03-28 13:11:47 +01:00

ml-regime

refactor(cuda): eliminate all CPU fallbacks — CUDA mandatory across ML stack

2026-03-16 21:01:28 +01:00

ml-regime-detection

fix(clippy): resolve all clippy warnings across entire workspace (--all-targets)

2026-03-13 10:18:35 +01:00

ml-risk

fix(clippy): resolve all clippy warnings across entire workspace (--all-targets)

2026-03-13 10:18:35 +01:00

ml-security

fix(clippy): resolve all clippy warnings across entire workspace (--all-targets)

2026-03-13 10:18:35 +01:00

ml-stress-testing

fix(clippy): achieve zero warnings across entire workspace

2026-03-10 13:18:57 +01:00

ml-supervised

feat(bf16): ml-dqn, ml-ppo, ml-supervised, ml-ensemble, ml-explainability compile clean

2026-03-28 01:51:45 +01:00

ml-universe

fix(clippy): resolve all clippy warnings across entire workspace (--all-targets)

2026-03-13 10:18:35 +01:00

ml-validation

fix(clippy): resolve all clippy warnings across entire workspace (--all-targets)

2026-03-13 10:18:35 +01:00

model_loader

fix(clippy): resolve all clippy warnings across entire workspace (--all-targets)

2026-03-13 10:18:35 +01:00

risk

refactor: eliminate candle from entire workspace — tests, examples, Cargo.toml

2026-03-18 00:53:47 +01:00

risk-data

fix: tune log levels across workspace — demote noisy warn to debug/trace

2026-03-14 11:35:15 +01:00

storage

…

trading_engine

fix(ml): BF16/F32 boundary alignment, GPU-resident ops across all ML crates

2026-03-15 11:59:31 +01:00

trading-data

…

training_uploader

feat: implement all 15 fxt CLI commands with real gRPC calls

2026-03-03 22:16:35 +01:00