app.py

import gradio as gr
import torch
import os

from diffusers.utils import is_xformers_available

from finetuning import FineTunedModel
from StableDiffuser import StableDiffuser
from memory_efficiency import MemoryEfficiencyWrapper
from train import train
    
import os
model_map = {'Van Gogh': 'models/vangogh.pt',
             'Pablo Picasso': 'models/pablopicasso.pt',
             'Car': 'models/car.pt',
             'Garbage Truck': 'models/garbagetruck.pt',
             'French Horn': 'models/frenchhorn.pt',
             'Kilian Eng': 'models/kilianeng.pt',
             'Thomas Kinkade': 'models/thomaskinkade.pt',
             'Tyler Edlin': 'models/tyleredlin.pt',
             'Kelly McKernan': 'models/kellymckernan.pt',
             'Rembrandt': 'models/rembrandt.pt' }
for model_file in os.listdir('models'):
    path = 'models/' + model_file
    if any([existing_path == path for existing_path in model_map.values()]):
        continue
    model_map[model_file] = path


ORIGINAL_SPACE_ID = 'baulab/Erasing-Concepts-In-Diffusion'
SPACE_ID = os.getenv('SPACE_ID')

SHARED_UI_WARNING = f'''## Attention - Training using the ESD-u method does not work in this shared UI. You can either duplicate and use it with a gpu with at least 40GB, or clone this repository to run on your own machine.
<center><a class="duplicate-button" style="display:inline-block" target="_blank" href="https://huggingface.co/spaces/{SPACE_ID}?duplicate=true"><img style="margin-top:0;margin-bottom:0" src="https://img.shields.io/badge/-Duplicate%20Space-blue?labelColor=white&style=flat&logo=data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAAXNSR0IArs4c6QAAAP5JREFUOE+lk7FqAkEURY+ltunEgFXS2sZGIbXfEPdLlnxJyDdYB62sbbUKpLbVNhyYFzbrrA74YJlh9r079973psed0cvUD4A+4HoCjsA85X0Dfn/RBLBgBDxnQPfAEJgBY+A9gALA4tcbamSzS4xq4FOQAJgCDwV2CPKV8tZAJcAjMMkUe1vX+U+SMhfAJEHasQIWmXNN3abzDwHUrgcRGmYcgKe0bxrblHEB4E/pndMazNpSZGcsZdBlYJcEL9Afo75molJyM2FxmPgmgPqlWNLGfwZGG6UiyEvLzHYDmoPkDDiNm9JR9uboiONcBXrpY1qmgs21x1QwyZcpvxt9NS09PlsPAAAAAElFTkSuQmCC&logoWidth=14" alt="Duplicate Space"></a></center>
'''


class Demo:

    def __init__(self) -> None:

        self.training = False
        self.generating = False

        with gr.Blocks() as demo:
            self.layout()
            demo.queue(concurrency_count=5).launch()


    def layout(self):

        with gr.Row():

            if SPACE_ID == ORIGINAL_SPACE_ID:

                self.warning = gr.Markdown(SHARED_UI_WARNING)
          
        with gr.Row():
                
            with gr.Tab("Test") as inference_column:

                with gr.Row():

                    self.explain_infr = gr.Markdown(interactive=False, 
                                      value='This is a demo of [Erasing Concepts from Stable Diffusion](https://erasing.baulab.info/).  To try out a model where a concept has been erased, select a model and enter any prompt.  For example, if you select the model "Van Gogh" you can generate images for the prompt "A portrait in the style of Van Gogh" and compare the erased and unerased models.  We have also provided several other pre-fine-tuned models with artistic styles and objects erased (Check out the "ESD Model" drop-down). You can also train and run your own custom models. Check out the "train" section for custom erasure of concepts.')

                with gr.Row():

                    with gr.Column(scale=1):

                        self.prompt_input_infr = gr.Text(
                            placeholder="Enter prompt...",
                            label="Prompt",
                            info="Prompt to generate"
                        )
                        self.negative_prompt_input_infr = gr.Text(
                            label="Negative prompt"
                        )

                        with gr.Row():

                            self.model_dropdown = gr.Dropdown(
                                label="ESD Model",
                                choices= list(model_map.keys()),
                                value='Van Gogh',
                                interactive=True
                            )

                            self.seed_infr = gr.Number(
                                label="Seed",
                                value=42
                            )
                            self.img_width_infr = gr.Slider(
                                label="Image width",
                                minimum=256,
                                maximum=1024,
                                value=512,
                                step=64
                            )

                            self.img_height_infr = gr.Slider(
                                label="Image height",
                                minimum=256,
                                maximum=1024,
                                value=512,
                                step=64
                            )

                        self.base_repo_id_or_path_input_infr = gr.Text(
                            label="Base model",
                            value="CompVis/stable-diffusion-v1-4",
                            info="Path or huggingface repo id of the base model that this edit was done against"
                        )

                    with gr.Column(scale=2):

                        self.infr_button = gr.Button(
                            value="Generate",
                            interactive=True
                        )

                        with gr.Row():

                            self.image_new = gr.Image(
                                label="ESD",
                                interactive=False
                            )
                            self.image_orig = gr.Image(
                                label="SD",
                                interactive=False
                            )

            with gr.Tab("Train") as training_column:

                with gr.Row():

                    self.explain_train= gr.Markdown(interactive=False, 
                                      value='In this part you can erase any concept from Stable Diffusion.   Enter a prompt for the concept or style you want to erase, and select ESD-x if you want to focus erasure on prompts that mention the concept explicitly. [NOTE: ESD-u is currently unavailable in this space. But you can duplicate the space and run it on GPU with VRAM >40GB for enabling ESD-u]. With default settings, it takes about 15 minutes to fine-tune the model; then you can try inference above or download the weights.  The training code used here is slightly different than the code tested in the original paper.  Code and details are at [github link](https://github.com/rohitgandikota/erasing).')

                with gr.Row():

                    with gr.Column(scale=3):

                        self.train_model_input = gr.Text(
                            label="Model to Edit",
                            value="CompVis/stable-diffusion-v1-4",
                            info="Path or huggingface repo id of the model to edit"
                        )

                        self.train_img_size_input = gr.Slider(
                            value=512,
                            step=64,
                            minimum=256,
                            maximum=1024,
                            label="Image Size",
                            info="Image size for training, should match the model's native image size"
                        )

                        self.prompt_input = gr.Text(
                            placeholder="Enter prompt...",
                            label="Prompt to Erase",
                            info="Prompt corresponding to concept to erase"
                        )

                        choices = ['ESD-x', 'ESD-self', 'ESD-u']
                        #if torch.cuda.get_device_properties(0).total_memory * 1e-9 >= 40 or is_xformers_available():
                        #    choices.append('ESD-u')
                    
                        self.train_method_input = gr.Dropdown(
                            choices=choices,
                            value='ESD-x',
                            label='Train Method',
                            info='Method of training'
                        )

                        self.neg_guidance_input = gr.Number(
                            value=1,
                            label="Negative Guidance",
                            info='Guidance of negative training used to train'
                        )

                        self.iterations_input = gr.Number(
                            value=150,
                            precision=0,
                            label="Iterations",
                            info='iterations used to train'
                        )

                        self.lr_input = gr.Number(
                            value=1e-5,
                            label="Learning Rate",
                            info='Learning rate used to train'
                        )
                        self.train_seed_input = gr.Number(
                            value=-1,
                            label="Seed",
                            info="Set to a fixed number for reproducible training results, or use -1 to pick randomly"
                        )

                        with gr.Column():
                            self.train_memory_options = gr.Markdown(interactive=False,
r                                value='Performance and VRAM usage optimizations, may not work on all devices.')
                            with gr.Row():
                                self.train_use_adamw8bit_input = gr.Checkbox(label="8bit AdamW", value=True)
                                self.train_use_xformers_input = gr.Checkbox(label="xformers", value=True)
                                self.train_use_amp_input = gr.Checkbox(label="AMP", value=True)
                                self.train_use_gradient_checkpointing_input = gr.Checkbox(label="Gradient checkpointing", value=True)

                    with gr.Column(scale=1):

                        self.train_status = gr.Button(value='', variant='primary', label='Status', interactive=False)

                        self.train_button = gr.Button(
                            value="Train",
                        )

                        self.download = gr.Files()

            with gr.Tab("Export") as export_column:
                with gr.Row():
                    self.explain_train= gr.Markdown(interactive=False,
                        value='Export a model to Diffusers format. Please enter the base model and select the editing weights.')

                with gr.Row():

                    with gr.Column(scale=3):
                        self.base_repo_id_or_path_input_export = gr.Text(
                            label="Base model",
                            value="CompVis/stable-diffusion-v1-4",
                            info="Path or huggingface repo id of the base model that this edit was done against"
                        )

                        self.model_dropdown_export = gr.Dropdown(
                            label="ESD Model",
                            choices=list(model_map.keys()),
                            value='Van Gogh',
                            interactive=True
                        )

                        self.save_path_input_export = gr.Text(
                            label="Output path",
                            placeholder="./exported_models/model_name",
                            info="Path to export the model to. A diffusers folder will be written to this location."
                        )

                        self.save_half_export = gr.Checkbox(
                            label="Save as fp16"
                        )

                    with gr.Column(scale=1):
                        self.export_button = gr.Button(
                            value="Export",
                        )

        self.infr_button.click(self.inference, inputs = [
            self.prompt_input_infr,
            self.negative_prompt_input_infr,
            self.seed_infr,
            self.img_width_infr,
            self.img_height_infr,
            self.model_dropdown,
            self.base_repo_id_or_path_input_infr
            ],
            outputs=[
                self.image_new,
                self.image_orig
            ]
        )
        self.train_button.click(self.train, inputs = [
            self.train_model_input,
            self.train_img_size_input,
            self.prompt_input,
            self.train_method_input, 
            self.neg_guidance_input,
            self.iterations_input,
            self.lr_input,
            self.train_use_adamw8bit_input,
            self.train_use_xformers_input,
            self.train_use_amp_input,
            self.train_use_gradient_checkpointing_input,
            self.train_seed_input,
        ],
        outputs=[self.train_button, self.train_status, self.download, self.model_dropdown]
        )
        self.export_button.click(self.export, inputs = [
            self.model_dropdown_export,
            self.base_repo_id_or_path_input_export,
            self.save_path_input_export,
            self.save_half_export
        ],
        outputs=[self.export_button]
        )

    def train(self, repo_id_or_path, img_size, prompt, train_method, neg_guidance, iterations, lr,
              use_adamw8bit=True, use_xformers=False, use_amp=False, use_gradient_checkpointing=False,
              seed = -1,
              pbar = gr.Progress(track_tqdm=True)):

        if self.training:
            return [gr.update(interactive=True, value='Train'), gr.update(value='Someone else is training... Try again soon'), None, gr.update()]

        print(f"Training {repo_id_or_path} at {img_size} to remove '{prompt}'.")
        print(f"  {train_method}, negative guidance {neg_guidance}, lr {lr}, {iterations} iterations.")
        print(f" {'✅' if use_gradient_checkpointing else '❌'} gradient checkpointing")
        print(f" {'✅' if use_amp else '❌'} AMP")
        print(f" {'✅' if use_xformers else '❌'} xformers")
        print(f" {'✅' if use_adamw8bit else '❌'} 8-bit AdamW")

        if train_method == 'ESD-x':
            modules = ".*attn2$"
            frozen = []

        elif train_method == 'ESD-u':
            modules = "unet$"
            frozen = [".*attn2$", "unet.time_embedding$", "unet.conv_out$"]   

        elif train_method == 'ESD-self':
            modules = ".*attn1$"
            frozen = []

        # build a save path, ensure it isn't in use
        while True:
            randn = torch.randint(1, 10000000, (1,)).item()
            options = f'{"a8" if use_adamw8bit else ""}{"AM" if use_amp else ""}{"xf" if use_xformers else ""}{"gc" if use_gradient_checkpointing else ""}'
            save_path = f"models/{prompt.lower().replace(' ', '')}_{train_method}_ng{neg_guidance}_lr{lr}_iter{iterations}_seed{seed}_{options}__{randn}.pt"
            if not os.path.exists(save_path):
                break
            # repeat until a not-in-use path is found

        try:
            self.training = True
            train(repo_id_or_path, img_size, prompt, modules, frozen, iterations, neg_guidance, lr, save_path,
                use_adamw8bit, use_xformers, use_amp, use_gradient_checkpointing, seed=seed)
        finally:
            self.training = False

        torch.cuda.empty_cache()

        new_model_name = f'{os.path.basename(save_path)}'
        model_map[new_model_name] = save_path

        return [gr.update(interactive=True, value='Train'),
                gr.update(value=f'Done Training! Try your model ({new_model_name}) in the "Test" tab'),
                save_path,
                gr.Dropdown.update(choices=list(model_map.keys()), value=new_model_name)]

    def export(self, model_name, base_repo_id_or_path, save_path, save_half):
        model_path = model_map[model_name]
        checkpoint = torch.load(model_path)
        diffuser = StableDiffuser(scheduler='DDIM',
                                       keep_pipeline=True,
                                       repo_id_or_path=base_repo_id_or_path
                                       ).eval()
        finetuner = FineTunedModel.from_checkpoint(diffuser, checkpoint).eval()
        with finetuner:
            if save_half:
                diffuser = diffuser.half()
                diffuser.pipeline.to(torch.float16, torch_device=diffuser.device)
            diffuser.pipeline.save_pretrained(save_path)


    def inference(self, prompt, negative_prompt, seed, width, height, model_name, base_repo_id_or_path, pbar = gr.Progress(track_tqdm=True)):
        
        seed = seed or 42
        model_path = model_map[model_name]
        checkpoint = torch.load(model_path)

        self.diffuser = StableDiffuser(scheduler='DDIM', repo_id_or_path=base_repo_id_or_path).to('cuda').eval().half()
        finetuner = FineTunedModel.from_checkpoint(self.diffuser, checkpoint).eval().half()

        generator = torch.manual_seed(seed)

        torch.cuda.empty_cache()
        images = self.diffuser(
            prompt,
            negative_prompt,
            width=width,
            height=height,
            n_steps=50,
            generator=generator
        )
        orig_image = images[0][0]

        torch.cuda.empty_cache()
        with finetuner:
            images = self.diffuser(
                prompt,
                negative_prompt,
                width=width,
                height=height,
                n_steps=50,
                generator=generator
            )
        edited_image = images[0][0]

        del finetuner
        torch.cuda.empty_cache()

        return edited_image, orig_image


demo = Demo()