Code Map

Project Python lives in src/archlab. The distribution is next-gen-arch; imports use archlab.

Ownership

Directory	Owns
architectures/	Model definitions and independent mechanisms
optimizers/	Project optimizer extensions
speedrun/	Frozen small-model reference execution
megatron/	Megatron integration and pretraining
automodel/	Pretrained loading, FSDP/EP integration, fine-tuning and RL execution
rl/	Rollouts, rewards, policy objectives and evaluation primitives
preprocessing/	Dataset conversion and preparation
evaluation/	Dataset selection, scoring and paired statistics
serving/, serving/sglang/	Inference integration, export and project model plugins
tracking/	Metric ingestion and operational watchers
reporting/	Shared run readers, token matching and analysis
qualification/	Independent mechanism numerical and performance tools
storage/	Verified artifact migration and storage operations
prompts/	Versioned reusable YAML prompts
data/	Packaged frozen campaign evidence

Design rules

• Execution adapters depend on architecture definitions.
• Architecture modules do not import trainers or optimizers.
• Import concrete modules; keep package initializers small.
• A numerical oracle or distributed mechanism may have its own module.
• Container frameworks remain external.

serving/sglang/ holds our model extension, not a copy of SGLang. The engine registers it through SGLANG_EXTERNAL_MODEL_PACKAGE=archlab.serving.sglang.

Find an entry point

Use the recipe and model-specific report before selecting a launcher. A file named probe or qualification is a test entry, not a training run.

Browse source · Browse recipes

Model integration layout

• automodel/qwen/: Qwen construction, fine-tuning, sampling and backend evaluation.
• automodel/deepseek_v41/qualification/: independent DeepSeek probes, kept as numerical oracles.
• automodel/deepseek_v41_*.py: execution and checkpoint-bound lineage. Recorded parent hashes still identify these paths; they are retained until an explicit checkpoint migration is qualified.
• serving/sglang/: the external SGLang model registration package. Numerical bridges and checkpoint conversion remain in serving/.

The 2026-09-23 cleanup record maps moved CLI entries and explains retained deployment dependencies.