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import torch |
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from PIL.Image import Image |
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from diffusers import StableDiffusionXLPipeline |
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import torch.nn as nn |
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from pipelines.models import TextToImageRequest |
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from diffusers import DDIMScheduler, KDPM2DiscreteScheduler, DPMSolverSinglestepScheduler, HeunDiscreteScheduler |
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from torch import Generator |
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from loss import SchedulerWrapper |
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from onediffx import compile_pipe, load_pipe |
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def callback_dynamic_cfg(pipe, step_index, timestep, callback_kwargs): |
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if step_index == int(pipe.num_timesteps * 0.78): |
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callback_kwargs['prompt_embeds'] = callback_kwargs['prompt_embeds'].chunk(2)[-1] |
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callback_kwargs['add_text_embeds'] = callback_kwargs['add_text_embeds'].chunk(2)[-1] |
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callback_kwargs['add_time_ids'] = callback_kwargs['add_time_ids'].chunk(2)[-1] |
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pipe._guidance_scale = 0.1 |
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return callback_kwargs |
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def load_pipeline(pipeline=None) -> StableDiffusionXLPipeline: |
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if not pipeline: |
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pipeline = StableDiffusionXLPipeline.from_pretrained( |
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"stablediffusionapi/newdream-sdxl-20", |
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torch_dtype=torch.float16, |
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).to("cuda") |
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pipeline.scheduler = SchedulerWrapper(DPMSolverMultistepScheduler.from_config(pipeline.scheduler.config)) |
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pipeline = compile_pipe(pipeline) |
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load_pipe(pipeline, dir="/home/sandbox/.cache/huggingface/hub/models--RobertML--cached-pipe-02/snapshots/58d70deae87034cce351b780b48841f9746d4ad7") |
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for _ in range(1): |
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deepcache_output = pipeline(prompt="telestereography, unstrengthen, preadministrator, copatroness, hyperpersonal, paramountness, paranoid, guaniferous", output_type="pil", num_inference_steps=20) |
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pipeline.scheduler.prepare_loss() |
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for _ in range(2): |
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pipeline(prompt="telestereography, unstrengthen, preadministrator, copatroness, hyperpersonal, paramountness, paranoid, guaniferous", output_type="pil", num_inference_steps=20) |
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return pipeline |
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def infer(request: TextToImageRequest, pipeline: StableDiffusionXLPipeline) -> Image: |
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if request.seed is None: |
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generator = None |
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else: |
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generator = Generator(pipeline.device).manual_seed(request.seed) |
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return pipeline( |
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prompt=request.prompt, |
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negative_prompt=request.negative_prompt, |
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width=request.width, |
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height=request.height, |
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generator=generator, |
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num_inference_steps=13, |
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cache_interval=1, |
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cache_layer_id=1, |
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cache_block_id=0, |
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eta=1.0, |
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guidance_scale = 5.0, |
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guidance_rescale = 0.0, |
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callback_on_step_end=callback_dynamic_cfg, |
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callback_on_step_end_tensor_inputs=['prompt_embeds', 'add_text_embeds', 'add_time_ids'], |
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).images[0] |
