lpw_stable_diffusion pipeline not working when "from_single_file" is used

[digitardz]

Describe the bug

I'm using StableDiffusionPipeline with lpw_stable_diffusion to do txt2img generations from long prompts.

When loading the safetensors checkpoint file using .from_single_file, prompts longer than 77 tokens still get truncated.

However, after converting the checkpoint to diffusers format with your convert_from_ckpt script and loading its path with .from_pretrained, prompts seem to get handled properly with no truncation.

Reproduction

1. Install requirements, do imports, download checkpoint from Civitai, set generation prompts and parameters
   Model used for test: https://civitai.com/models/25694/epicrealism

!pip install -U transformers
!pip install -U accelerate
!pip install -U diffusers

import torch
from diffusers import StableDiffusionPipeline, DPMSolverMultistepScheduler
from diffusers.pipelines.stable_diffusion.convert_from_ckpt import download_from_original_stable_diffusion_ckpt

!wget -O model.safetensors 'https://civitai.com/api/download/models/143906?type=Model&format=SafeTensor&size=pruned&fp=fp16'

#repeated tokens, just for example
prompt = 'polaroid photo, night photo, photo of 24 y.o beautiful woman, pale skin, bokeh, motion blur, polaroid photo, night photo, photo of 24 y.o beautiful woman, pale skin, bokeh, motion blur, polaroid photo, night photo, photo of 24 y.o beautiful woman, pale skin, bokeh, motion blur, polaroid photo, night photo, photo of 24 y.o beautiful woman, pale skin, bokeh, motion blur, polaroid photo, night photo, photo of 24 y.o beautiful woman, pale skin, bokeh, motion blur, polaroid photo, night photo, photo of 24 y.o beautiful woman, pale skin, bokeh, motion blur, polaroid photo, night photo, photo of 24 y.o beautiful woman, pale skin, bokeh, motion blur, polaroid photo, night photo, photo of 24 y.o beautiful woman, pale skin, bokeh, motion blur, polaroid photo, night photo, photo of 24 y.o beautiful woman, pale skin, bokeh, motion blur, polaroid photo, night photo, photo of 24 y.o beautiful woman, pale skin, bokeh, motion blur, '
negative_prompt = '(deformed iris, deformed pupils, semi-realistic, cgi, 3d, render, sketch, cartoon, drawing, anime, mutated hands and fingers:1.4), (deformed, distorted, disfigured:1.3), poorly drawn, bad anatomy, wrong anatomy, extra limb, missing limb, floating limbs, disconnected limbs, mutation, mutated, ugly, disgusting, amputation, ugly, unrealistic anatomy, deformed face, deformed limbs, deformed head, bad proportions, incomplete, (deformed iris, deformed pupils, semi-realistic, cgi, 3d, render, sketch, cartoon, drawing, anime, mutated hands and fingers:1.4), (deformed, distorted, disfigured:1.3), poorly drawn, bad anatomy, wrong anatomy, extra limb, missing limb, floating limbs, disconnected limbs, mutation, mutated, ugly, disgusting, amputation, ugly, unrealistic anatomy, deformed face, deformed limbs, deformed head, bad proportions, incomplete'

width=960
height=1440
num_inference_steps=25
guidance_scale=7

2. Load .safetensors checkpoint with StableDiffusionPipeline.from_single_file, generate image

pipeline = StableDiffusionPipeline.from_single_file(
    'model.safetensors',
    custom_pipeline='lpw_stable_diffusion',
    torch_dtype=torch.float16,
)
pipeline.scheduler = DPMSolverMultistepScheduler.from_config(pipeline.scheduler.config, use_karras_sigmas=True)
pipeline.to('cuda')

image = pipeline(
    prompt = prompt,
    negative_prompt = negative_prompt,
    width=width,
    height=height,
    num_inference_steps=num_inference_steps,
    num_images_per_prompt=1,
    guidance_scale=guidance_scale,
    max_embeddings_multiples = 6,
    generator=torch.Generator(device='cuda').manual_seed(0)
).images[0]

image

Output:

The prompt gets truncated.

3. Convert the checkpoint file to diffusers format, load path with StableDiffusionPipeline.from_pretrained, generate image

p = download_from_original_stable_diffusion_ckpt(
    checkpoint_path_or_dict='model.safetensors',
    from_safetensors=True,
)
p.save_pretrained('converted_model', safe_serialization=False)

pipeline = StableDiffusionPipeline.from_pretrained(
    'converted_model',
    custom_pipeline='lpw_stable_diffusion',
    torch_dtype=torch.float16,
)
pipeline.scheduler = DPMSolverMultistepScheduler.from_config(pipeline.scheduler.config, use_karras_sigmas=True)
pipeline.to('cuda')

image = pipeline(
    prompt = prompt,
    negative_prompt = negative_prompt,
    width=width,
    height=height,
    num_inference_steps=num_inference_steps,
    num_images_per_prompt=1,
    guidance_scale=guidance_scale,
    max_embeddings_multiples = 6,
    generator=torch.Generator(device='cuda').manual_seed(0)
).images[0]

image

Output:

No truncation.

Note that the "Token indices sequence length" is a false alarm according to the community pipeline documentation.

System Info

Google Colab clean environment with T4 GPU
transformers 4.40.2
diffusers 0.27.2

Who can help?

@DN6, maybe @SkyTNT?
I think the handling of long prompts is a great feature for diffusers pipelines, I hope it gets mantained over time :)

[yiyixuxu]

Hi @digitardz
thanks for the issue but I do not understand it, you said

I'm using StableDiffusionPipeline with lpw_stable_diffusion

but in the script you provided, you only used StableDiffusionPipeline, did I miss anything?

[crapthings]

@yiyixuxu

i've found the same issue

pipeline = StableDiffusionPipeline.from_single_file(
    'model.safetensors',
    custom_pipeline='lpw_stable_diffusion',
    torch_dtype=torch.float16,
)

after add this custom_pipeline

this warning still exists, so we don't know if its working or not

[yiyixuxu]

ahh I see!!! ohh I don't think from_single_file works with custom_pipeline

Can you do this:

after

pipeline = StableDiffusionPipeline.from_single_file(
    'model.safetensors',
    torch_dtype=torch.float16,
)

and then

pipe_lpw = DiffusionPipeline.from_pipe(
    pipeline,
    custom_pipeline="lpw_stable_diffusion",
).to("cuda")

see more about from_pipe API https://huggingface.co/docs/diffusers/main/en/using-diffusers/custom_pipeline_overview#load-with-frompipe

[yiyixuxu]

cc @DN6 here
should we add a validattion decorator for from_single_file? see more here #6814

also good to have for from_pipe and from_pretrained etc

[digitardz]

ahh I see!!! ohh I don't think from_single_file works with custom_pipeline

Can you do this:

after

pipeline = StableDiffusionPipeline.from_single_file(
    'model.safetensors',
    torch_dtype=torch.float16,
)

and then

pipe_lpw = DiffusionPipeline.from_pipe(
    pipeline,
    custom_pipeline="lpw_stable_diffusion",
).to("cuda")

see more about from_pipe API https://huggingface.co/docs/diffusers/main/en/using-diffusers/custom_pipeline_overview#load-with-frompipe

I tried this but apparently DiffusionPipeline doesn't have the from_pipe method.
Output:
AttributeError: type object 'DiffusionPipeline' has no attribute 'from_pipe'

[yiyixuxu]

ohh sorry you have to install diffusers from source, since the PR was merged after the last release

pip install git+https://github.com/huggingface/diffusers

[digitardz]

ohh sorry you have to install diffusers from source, since the PR was merged after the last release

pip install git+https://github.com/huggingface/diffusers

Alright that worked, no truncation error with your code