 using VAE for Flash Attention
>>> pipe.vae.enable_xformers_memory_efficient_attention(attention_op=None)  disable_xformers_memory_efficient_attention  < source > ( )    Disable memory efficient attention from xFormers.  enable_vae_tiling  < source > ( )    Enable tiled VAE decoding. When this option is enabled, the VAE will split the input tensor into tiles to
compute decoding and encoding in several steps. This is useful for saving a large am