up training with mixed precision using the bf16 format, add the --mixed_precision parameter to the training command:   Copied accelerate launch train_text_to_image_sdxl.py \
  --mixed_precision="bf16" Most of the parameters are identical to the parameters in the Text-to-image training guide, so you’ll focus on the parameters that are relevant to training SDXL in this guide. --pretrained_vae_model_name_or_path: path to a pretrained VAE; the SDXL