zero gpu usage activate

app.py

@@ -2,76 +2,133 @@ import gradio as gr
 import numpy as np
 import random
 
+import spaces #[uncomment to use ZeroGPU]
 from diffusers import DiffusionPipeline
 import torch
-import os
 
 from peft import PeftModel, LoraConfig
-
-device = "cuda" if torch.cuda.is_available() else "cpu"
+import os
 
 def get_lora_sd_pipeline(
-    ckpt_dir="./lora",
-    base_model_name_or_path="sd-legacy/stable-diffusion-v1-5",
-    dtype=torch.float16,
-    adapter_name="default",
-):
+    ckpt_dir='./lora', 
+    base_model_name_or_path=None, 
+    dtype=torch.float16, 
+    adapter_name="default"
+    ):
+
     unet_sub_dir = os.path.join(ckpt_dir, "unet")
     text_encoder_sub_dir = os.path.join(ckpt_dir, "text_encoder")
+    
+    if os.path.exists(text_encoder_sub_dir) and base_model_name_or_path is None:
+        config = LoraConfig.from_pretrained(text_encoder_sub_dir)
+        base_model_name_or_path = config.base_model_name_or_path
+    
+    if base_model_name_or_path is None:
+        raise ValueError("Please specify the base model name or path")
+    
+    pipe = DiffusionPipeline.from_pretrained(base_model_name_or_path, torch_dtype=dtype)
+    before_params = pipe.unet.parameters()
+    pipe.unet = PeftModel.from_pretrained(pipe.unet, unet_sub_dir, adapter_name=adapter_name)
+    pipe.unet.set_adapter(adapter_name)
+    after_params = pipe.unet.parameters()
+    print("Parameters changed:", any(torch.any(b != a) for b, a in zip(before_params, after_params)))
+    
+    if os.path.exists(text_encoder_sub_dir):
+        pipe.text_encoder = PeftModel.from_pretrained(pipe.text_encoder, text_encoder_sub_dir, adapter_name=adapter_name)
+    
+    if dtype in (torch.float16, torch.bfloat16):
+        pipe.unet.half()
+        pipe.text_encoder.half()
+    
+    return pipe
 
-    pipe = DiffusionPipeline.from_pretrained(base_model_name_or_path, torch_dtype=dtype).to(device)
+def process_prompt(prompt, tokenizer, text_encoder, max_length=77):
+    tokens = tokenizer(prompt, truncation=False, return_tensors="pt")["input_ids"]
+    chunks = [tokens[:, i:i + max_length] for i in range(0, tokens.shape[1], max_length)]
+    
+    with torch.no_grad():
+        embeds = [text_encoder(chunk.to(text_encoder.device))[0] for chunk in chunks]
+    
+    return torch.cat(embeds, dim=1)
 
-    if os.path.exists(unet_sub_dir):
-        pipe.unet = PeftModel.from_pretrained(pipe.unet, unet_sub_dir, adapter_name=adapter_name)
-        print(f"LoRA adapter loaded: {adapter_name}")
+def align_embeddings(prompt_embeds, negative_prompt_embeds):
+    max_length = max(prompt_embeds.shape[1], negative_prompt_embeds.shape[1])
+    return torch.nn.functional.pad(prompt_embeds, (0, 0, 0, max_length - prompt_embeds.shape[1])), \
+           torch.nn.functional.pad(negative_prompt_embeds, (0, 0, 0, max_length - negative_prompt_embeds.shape[1]))
 
-    if os.path.exists(text_encoder_sub_dir):
-        pipe.text_encoder = PeftModel.from_pretrained(pipe.text_encoder, text_encoder_sub_dir, adapter_name=adapter_name)
+device = "cuda" if torch.cuda.is_available() else "cpu"
 
-    return pipe
+model_id_default = "sd-legacy/stable-diffusion-v1-5"
+model_dropdown = ['stabilityai/sdxl-turbo', 'CompVis/stable-diffusion-v1-4', 'sd-legacy/stable-diffusion-v1-5']
 
+model_lora_default = "lora"
 
+if torch.cuda.is_available():
+    torch_dtype = torch.float16
+else:
+    torch_dtype = torch.float32
+
+MAX_SEED = np.iinfo(np.int32).max
+MAX_IMAGE_SIZE = 1024
+
+
+@spaces.GPU #[uncomment to use ZeroGPU]
 def infer(
     prompt,
-    negative_prompt="",
-    randomize_seed=False,
+    negative_prompt,
+    randomize_seed,
     width=512,
     height=512,
-    model_repo_id="sd-legacy/stable-diffusion-v1-5",
+    model_repo_id=model_id_default,
     seed=42,
     guidance_scale=7,
     num_inference_steps=20,
-    model_lora_id="lora",
+    model_lora_id=model_lora_default,
     lora_scale=0.5,
-):
+    progress=gr.Progress(track_tqdm=True),
+    ):
+        
     if randomize_seed:
-        seed = random.randint(0, np.iinfo(np.int32).max)
-
-    generator = torch.manual_seed(seed)
-
-    # Загружаем основную модель или с LoRA
-    if model_lora_id != "none":
-        pipe = get_lora_sd_pipeline(ckpt_dir=f"./{model_lora_id}", base_model_name_or_path=model_repo_id)
+        seed = random.randint(0, MAX_SEED)
+
+    generator = torch.Generator().manual_seed(seed)
+    
+    # добавляем обновление pipe по условию
+    if model_repo_id != model_id_default:
+        pipe = DiffusionPipeline.from_pretrained(model_repo_id, torch_dtype=torch_dtype).to(device)
+        prompt_embeds = process_prompt(prompt, pipe.tokenizer, pipe.text_encoder)
+        negative_prompt_embeds = process_prompt(negative_prompt, pipe.tokenizer, pipe.text_encoder)
+        prompt_embeds, negative_prompt_embeds = align_embeddings(prompt_embeds, negative_prompt_embeds)
     else:
-        pipe = DiffusionPipeline.from_pretrained(model_repo_id, torch_dtype=torch.float16).to(device)
-
-    # Применяем LoRA, если он есть
-    if hasattr(pipe.unet, "fuse_lora"):
+        # добавляем lora
+        pipe = get_lora_sd_pipeline(ckpt_dir='./' + model_lora_id, base_model_name_or_path=model_id_default, dtype=torch_dtype).to(device)
+        prompt_embeds = process_prompt(prompt, pipe.tokenizer, pipe.text_encoder)
+        negative_prompt_embeds = process_prompt(negative_prompt, pipe.tokenizer, pipe.text_encoder)
+        prompt_embeds, negative_prompt_embeds = align_embeddings(prompt_embeds, negative_prompt_embeds)
+        print(f"LoRA adapter loaded: {pipe.unet.active_adapters}")
+        print(f"LoRA scale applied: {lora_scale}")
         pipe.fuse_lora(lora_scale=lora_scale)
 
-    # Генерируем изображение
-    image = pipe(
-        prompt=prompt,
-        negative_prompt=negative_prompt,
-        width=width,
-        height=height,
-        guidance_scale=guidance_scale,
-        num_inference_steps=num_inference_steps,
-        generator=generator,
-    ).images[0]
-
-    return image, seed
-
+    # на вызов pipe с эмбеддингами
+    params = {
+        'prompt_embeds': prompt_embeds,
+        'negative_prompt_embeds': negative_prompt_embeds,
+        'guidance_scale': guidance_scale,
+        'num_inference_steps': num_inference_steps,
+        'width': width,
+        'height': height,
+        'generator': generator,
+    }
+    
+    return pipe(**params).images[0], seed    
+
+
+examples = [
+    "A Elon Mask lady in a Russian embroidered kaftan is sitting on a beautiful carved veranda, holding a cup to her mouth and drinking tea from the cup. With her other hand, the girl holds a saucer. The cup and saucer are painted with gzhel. Next to the girl on the table stands a samovar, and steam can be seen above it.",
+    "Elon Mask in a jungle, cold color palette, muted colors, detailed, 8k",
+    "An Elon Mask astronaut riding a green horse",
+    "A delicious Elon Mask ceviche cheesecake slice",
+]
 
 css = """
 #col-container {
@@ -82,25 +139,20 @@ css = """
 
 with gr.Blocks(css=css) as demo:
     with gr.Column(elem_id="col-container"):
-        gr.Markdown(" # Text-to-Image with LoRA Support")
-
-        prompt = gr.Text(label="Prompt", placeholder="Enter your prompt")
-        negative_prompt = gr.Text(label="Negative Prompt", placeholder="Optional")
-        width = gr.Slider(256, 1024, value=512, step=64, label="Width")
-        height = gr.Slider(256, 1024, value=512, step=64, label="Height")
-        num_steps = gr.Slider(1, 50, value=20, step=1, label="Steps")
-        guidance = gr.Slider(1, 15, value=7, step=0.1, label="Guidance Scale")
-        lora_scale = gr.Slider(0, 1, value=0.5, step=0.1, label="LoRA Strength")
-        randomize_seed = gr.Checkbox(label="Randomize Seed")
-        result = gr.Image(label="Generated Image")
-
-        run_button = gr.Button("Generate")
-
-        run_button.click(
-            fn=infer,
-            inputs=[prompt, negative_prompt, randomize_seed, width, height, num_steps, guidance, lora_scale],
-            outputs=[result],
-        )
+        gr.Markdown(" # Text-to-Image")
+
+        with gr.Row():
+            prompt = gr.Text(
+                label="Prompt",
+                show_label=False,
+                max_lines=1,
+                placeholder="Enter your prompt",
+                container=False,
+            )
+
+            run_button = gr.Button("Run", scale=0, variant="primary")
+
+        result = gr.Image(label="Result", show_label=False)
 
 if __name__ == "__main__":
-    demo.launch()
+    demo.launch()