[SDXL] Add SDXL pipeline to SHARK

-- This commit adds SDXL pipeline to SHARK.

Signed-off-by: Abhishek Varma <abhishek@nod-labs.com>

apps/stable_diffusion/scripts/txt2img_sdxl.py

@@ -0,0 +1,94 @@
+import torch
+import time
+from apps.stable_diffusion.src import (
+    args,
+    Text2ImageSDXLPipeline,
+    get_schedulers,
+    set_init_device_flags,
+    utils,
+    clear_all,
+    save_output_img,
+)
+
+
+def main():
+    if args.clear_all:
+        clear_all()
+
+    # TODO: prompt_embeds and text_embeds form base_model.json requires fixing
+    args.precision = "fp16"
+    args.height = 1024
+    args.width = 1024
+    args.max_length = 77
+    args.scheduler = "DDIM"
+    print("Using default supported configuration for SDXL :-\nprecision=fp16, width*height= 1024*1024, max_length=77 and scheduler=DDIM")
+    dtype = torch.float32 if args.precision == "fp32" else torch.half
+    cpu_scheduling = not args.scheduler.startswith("Shark")
+    set_init_device_flags()
+    schedulers = get_schedulers(args.hf_model_id)
+    scheduler_obj = schedulers[args.scheduler]
+    seed = args.seed
+    txt2img_obj = Text2ImageSDXLPipeline.from_pretrained(
+        scheduler=scheduler_obj,
+        import_mlir=args.import_mlir,
+        model_id=args.hf_model_id,
+        ckpt_loc=args.ckpt_loc,
+        precision=args.precision,
+        max_length=args.max_length,
+        batch_size=args.batch_size,
+        height=args.height,
+        width=args.width,
+        use_base_vae=args.use_base_vae,
+        use_tuned=args.use_tuned,
+        custom_vae=args.custom_vae,
+        low_cpu_mem_usage=args.low_cpu_mem_usage,
+        debug=args.import_debug if args.import_mlir else False,
+        use_lora=args.use_lora,
+        use_quantize=args.use_quantize,
+        ondemand=args.ondemand,
+    )
+
+    seeds = utils.batch_seeds(seed, args.batch_count, args.repeatable_seeds)
+    for current_batch in range(args.batch_count):
+        start_time = time.time()
+        generated_imgs = txt2img_obj.generate_images(
+            args.prompts,
+            args.negative_prompts,
+            args.batch_size,
+            args.height,
+            args.width,
+            args.steps,
+            args.guidance_scale,
+            seeds[current_batch],
+            args.max_length,
+            dtype,
+            args.use_base_vae,
+            cpu_scheduling,
+            args.max_embeddings_multiples,
+        )
+        total_time = time.time() - start_time
+        text_output = f"prompt={args.prompts}"
+        text_output += f"\nnegative prompt={args.negative_prompts}"
+        text_output += (
+            f"\nmodel_id={args.hf_model_id}, ckpt_loc={args.ckpt_loc}"
+        )
+        text_output += f"\nscheduler={args.scheduler}, device={args.device}"
+        text_output += (
+            f"\nsteps={args.steps}, guidance_scale={args.guidance_scale},"
+        )
+        text_output += (
+            f"seed={seeds[current_batch]}, size={args.height}x{args.width}"
+        )
+        text_output += (
+            f", batch size={args.batch_size}, max_length={args.max_length}"
+        )
+        # TODO: if using --batch_count=x txt2img_obj.log will output on each display every iteration infos from the start
+        text_output += txt2img_obj.log
+        text_output += f"\nTotal image generation time: {total_time:.4f}sec"
+
+        save_output_img(generated_imgs[0], seed)
+        print(text_output)
+
+
+if __name__ == "__main__":
+    main()

apps/stable_diffusion/src/__init__.py

@@ -9,6 +9,7 @@
 )
 from apps.stable_diffusion.src.pipelines import (
     Text2ImagePipeline,
+    Text2ImageSDXLPipeline,
     Image2ImagePipeline,
     InpaintPipeline,
     OutpaintPipeline,