TorchTitan - PyTorch Native Distributed LLM Pretraining Quick start TorchTitan is PyTorch's official platform for large-scale LLM pretraining with composable 4D parallelism (FSDP2, TP, PP, CP), achieving 65%+ speedups over baselines on H100 GPUs. Installation : Download tokenizer : Start training on 8 GPUs : Common workflows Workflow 1: Pretrain Llama 3.1 8B on single node Copy this checklist: Step 1: Download tokenizer Step 2: Configure training Edit or create a TOML config file: Step 3: Launch training Step 4: Monitor and checkpoint TensorBoard logs are saved to : Workflow 2: Multi-node tra…