fb346a3cad
Add labels 43-46 inside Mamba2Block::forward_train_seq_into, scanned BETWEEN the three projection cuBLAS GEMMs (w_in, w_a, w_b) and the SSM scan kernel launch (mamba2_alpha_scan_fwd_seq). The scan kernel ONLY reads a_proj/b_proj/w_c/h_s2 and ONLY writes h_enriched_seq - it cannot retroactively corrupt its read-only inputs, so a NaN observed here pinpoints the projection cuBLAS path (PROJ verdict) vs the scan kernel itself (SCAN verdict, requires labels 43-46 clean AND existing labels 36/37 still firing). Plumbed via the existing NanScanHook installed from IntegratedTrainer::new on mamba2_l1 only (L2 left unhooked - scope is the L1 forward path established as the failure window by labels 36/37). Hook source identical to the perception trainer's hook (shared cubin handle + ISV step counter pointer); per-launch dispatch is a no-op when FOXHUNT_NAN_SCAN is unset, so production training pays zero cost. 43 - mamba2_l1_fwd_a_proj_pre_scan (post w_a, pre scan) 44 - mamba2_l1_fwd_b_proj_pre_scan (post w_b, pre scan) 45 - mamba2_l1_fwd_x_pre_scan (post w_in) 46 - mamba2_l1_fwd_h_s2_pre_scan (zero-init residual sanity) Refs pearl_atomicadd_masks_v_instability. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Foxhunt
Production HFT trading system in Rust.
Architecture
The workspace contains 32 crates organized as follows:
Core Libraries (16)
| Crate | Purpose |
|---|---|
trading_engine |
Order processing, FIX 4.4, IB TWS, SIMD, RDTSC timing |
risk |
VaR, Kelly, circuit breakers, kill switches, compliance |
risk-data |
Risk data types and shared structures |
trading-data |
Trading data types |
ml |
DQN Rainbow, PPO, TFT, Mamba2, ensemble inference |
ml-data |
ML data types and feature definitions |
data |
Market data ingestion and storage |
backtesting |
Replay engine, strategy tester |
adaptive-strategy |
Ensemble execution, microstructure analysis |
common |
Shared types, resilience, error handling |
storage |
S3 and local model storage |
model_loader |
Model serialization and loading |
market-data |
Market data feed handlers |
database |
PostgreSQL access layer (SQLx) |
config |
Configuration management |
tli |
CLI commands and tooling |
Services (8)
| Service | Purpose |
|---|---|
backtesting_service |
gRPC backtesting service |
broker_gateway_service |
FIX routing, broker connectivity |
trading_service |
Core trading operations |
ml_training_service |
Model training orchestration |
data_acquisition_service |
Market data acquisition |
trading_agent_service |
Autonomous trading agents |
api_gateway |
gRPC API gateway with auth |
web-gateway |
Axum REST + WebSocket gateway |
Frontend
web-dashboard/ -- React 19 + TypeScript + Vite + TradingView charts.
Building
# Check compilation (no PostgreSQL required)
SQLX_OFFLINE=true cargo check --workspace
# Run tests for a specific crate
SQLX_OFFLINE=true cargo test -p <crate> --lib
# Clippy
SQLX_OFFLINE=true cargo clippy --workspace
ML Models
Four production model architectures on Candle v0.9.1 with CUDA:
- DQN Rainbow -- Deep Q-Network with prioritized replay, dueling heads, noisy nets
- PPO -- Proximal Policy Optimization with GAE and LSTM policies
- TFT -- Temporal Fusion Transformer for multi-horizon forecasting
- Mamba2 -- State space model for sequence prediction
Each model has a standalone trainer and a UnifiedTrainable adapter for the hyperopt pipeline.
Infrastructure
- Git: Gitea at
git.fxhnt.ai(Tailscale-only), Scaleway DEV1-S - Observability: OpenTelemetry OTLP (env
OTEL_EXPORTER_OTLP_ENDPOINT) - Database: PostgreSQL with SQLx offline mode for CI
License
Proprietary. All rights reserved.