app.py

from diffusers import DiffusionPipeline
import spaces
import torch
import PIL.Image
import gradio as gr
import gradio.components as grc
import numpy as np

pipeline = DiffusionPipeline.from_pretrained("1aurent/ddpm-mnist")
device = "cuda" if torch.cuda.is_available() else "cpu"
pipeline = pipeline.to(device=device)

@spaces.GPU
def predict(steps, seed):
    generator = torch.manual_seed(seed)
    for i in range(1,steps):
        yield pipeline(generator=generator, num_inference_steps=i).images[0]

gr.Interface(
    predict,
    inputs=[
        grc.Slider(1, 100, label='Inference Steps', default=12, step=1),
        grc.Slider(0, 2147483647, label='Seed', default=69420, step=1),
    ],
    outputs=gr.Image(shape=[28,28], type="pil", elem_id="output_image"),
    css="#output_image{width: 256px}",
    title="Unconditional MNIST",
    description="A DDIM scheduler and UNet model trained on the MNIST dataset for unconditional image generation.",
).queue().launch()