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b2e2d141 - minimal stable diffusion GPU memory usage with accelerate hooks (#850)

minimal stable diffusion GPU memory usage with accelerate hooks (#850) * add method to enable cuda with minimal gpu usage to stable diffusion * add test to minimal cuda memory usage * ensure all models but unet are onn torch.float32 * move to cpu_offload along with minor internal changes to make it work * make it test against accelerate master branch * coming back, its official: I don't know how to make it test againt the master branch from accelerate * make it install accelerate from master on tests * go back to accelerate>=0.11 * undo prettier formatting on yml files * undo prettier formatting on yml files againn