How 🤗 Accelerate runs very large models thanks to PyTorch

here's the thing: large models only run because of the sheer, brutal efficiency of the underlying framework, mostly PyTorch. without the optimized CUDA kernels and distributed memory management, we wouldn't be able to push multi-billion parameter models onto consumer or even entry-level server GPUs. tools like Accelerate just manage the complexity so we don't have to manually handle every single GPU communication layer. it's pure mathematical plumbing making the heavy lifting possible.