User Guide# End-to-End Use Case: TransformerEngine-FL + Megatron-LM-FL + FlagScale 1. Docker Environment 2. Prepare FlagScale 3. Prepare Megatron-LM-FL 4. Prepare TransformerEngine-FL 5. Prepare Dataset and Tokenizer 6. Qwen3 Training Test 7. DeepSeek-V3 Training Test 8. Notes TE-FL Custom Backend Examples Two Approaches Quick Start In-tree Approach (3 Steps) Out-of-tree Approach (Plugin Package) Environment Variables Examples Expected Output