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#gemma

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2026

1 post

Sep 27
PyTorch DDP for Fine-Tuning Gemma 4 on Multiple GPUs
How PyTorch DistributedDataParallel works and when it is the right tool for LoRA fine-tuning Gemma 4, with a complete torchrun script, memory math for the 12B model, and the failure modes that hang multi-GPU jobs. #pytorch #machine-learning #ai