Accelerate is a PyTorch distributed training library that abstracts the boilerplate required to run models across multiple GPUs, TPUs, and CPUs. It functions as a deep learning model scaler and distributed hardware orchestrator, allowing the same training script to run on different hardware backends without modifying the core logic.
The project provides a distributed training command line interface for configuring compute environments and launching jobs across single or multi-node clusters. It includes a mixed precision training framework to implement FP16 and BF16 precision, reducing memory usage and increasing compute speed.
The library covers a broad range of scaling capabilities, including sharded data parallelism, gradient accumulation, and gradient clipping to optimize memory and stability. It manages distributed object preparation, state synchronization, and model persistence across available accelerators.
The toolkit includes a guided configuration prompt to set up hardware environments and save settings for subsequent launches.