add back enable_attention_slicing for mps device

iopaint/model/sdxl.py

@@ -50,6 +50,11 @@ class SDXL(DiffusionInpaintModel):
                 variant="fp16",
             )
 
+        if torch.backends.mps.is_available():
+            # MPS: Recommended RAM < 64 GB https://huggingface.co/docs/diffusers/optimization/mps
+            # CUDA: Don't enable attention slicing if you're already using `scaled_dot_product_attention` (SDPA) from PyTorch 2.0 or xFormers. https://huggingface.co/docs/diffusers/v0.25.0/en/api/pipelines/stable_diffusion/image_variation#diffusers.StableDiffusionImageVariationPipeline.enable_attention_slicing
+            self.model.enable_attention_slicing()
+
         if kwargs.get("cpu_offload", False) and use_gpu:
             logger.info("Enable sequential cpu offload")
             self.model.enable_sequential_cpu_offload(gpu_id=0)