Hugging Face Accelerate is an open-source Python library that lets PyTorch training code run unchanged across CPUs, single or multiple GPUs, and TPUs by abstracting device placement and distributed launch. It handles mixed precision, gradient accumulation, and sharded data/model parallelism with minimal boilerplate. Accelerate lowers the barrier to scaling deep-learning training and inference across hardware configurations.
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- A thin wrapper prepares models, optimisers, and dataloaders, then dispatches them across the available accelerators with a single launch command. It integrates backends such as DeepSpeed and FSDP for memory-efficient large-model training, providing a uniform API so the same script runs from a laptop to a multi-node cluster.