13:01
2026-08-02
pub.towardsai.net
machine-learning
Understanding PyTorch DistributedDataParallel (DDP) From Scratch: Why Every GPU Trains the Entire…
PyTorch's DistributedDataParallel (DDP) enables multi-GPU training by synchronizing gradients across all GPUs via AllReduce, ensuring each GPU maintains identical model weights. The article explains t…