Add enable_vae_tiling to AllegroPipeline, fix example

src/diffusers/pipelines/allegro/pipeline_allegro.py

@@ -59,6 +59,7 @@
 
         >>> vae = AutoencoderKLAllegro.from_pretrained("rhymes-ai/Allegro", subfolder="vae", torch_dtype=torch.float32)
         >>> pipe = AllegroPipeline.from_pretrained("rhymes-ai/Allegro", vae=vae, torch_dtype=torch.bfloat16).to("cuda")
+        >>> pipe.enable_vae_tiling()
 
         >>> prompt = (
         ...     "A seaside harbor with bright sunlight and sparkling seawater, with many boats in the water. From an aerial view, "
@@ -636,6 +637,35 @@ def _prepare_rotary_positional_embeddings(
 
         return (freqs_t, freqs_h, freqs_w), (grid_t, grid_h, grid_w)
 
+    def enable_vae_slicing(self):
+        r"""
+        Enable sliced VAE decoding. When this option is enabled, the VAE will split the input tensor in slices to
+        compute decoding in several steps. This is useful to save some memory and allow larger batch sizes.
+        """
+        self.vae.enable_slicing()
+
+    def disable_vae_slicing(self):
+        r"""
+        Disable sliced VAE decoding. If `enable_vae_slicing` was previously enabled, this method will go back to
+        computing decoding in one step.
+        """
+        self.vae.disable_slicing()
+
+    def enable_vae_tiling(self):
+        r"""
+        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 amount of memory and to allow
+        processing larger images.
+        """
+        self.vae.enable_tiling()
+
+    def disable_vae_tiling(self):
+        r"""
+        Disable tiled VAE decoding. If `enable_vae_tiling` was previously enabled, this method will go back to
+        computing decoding in one step.
+        """
+        self.vae.disable_tiling()
+
     @property
     def guidance_scale(self):
         return self._guidance_scale