hidream-controlnet-lora-test

This is a ControlNet PEFT LoRA derived from HiDream-ai/HiDream-I1-Full.

The main validation prompt used during training was:

A photo-realistic image of a cat

Validation settings

• CFG: 4.0
• CFG Rescale: 0.0
• Steps: 16
• Sampler: FlowMatchEulerDiscreteScheduler
• Seed: 42
• Resolution: 256x256

Note: The validation settings are not necessarily the same as the training settings.

You can find some example images in the following gallery:

Prompt

A photo-realistic image of a cat

Negative Prompt

ugly, cropped, blurry, low-quality, mediocre average

The text encoder was not trained. You may reuse the base model text encoder for inference.

Training settings

• Training epochs: 0

• Training steps: 2

• Learning rate: 0.0001

  • Learning rate schedule: constant
  • Warmup steps: 500

• Max grad value: 2.0

• Effective batch size: 1

  • Micro-batch size: 1
  • Gradient accumulation steps: 1
  • Number of GPUs: 1

• Gradient checkpointing: True

• Prediction type: flow_matching (extra parameters=['shift=3.0'])

• Optimizer: adamw_bf16

• Trainable parameter precision: Pure BF16

• Base model precision: int8-quanto

• Caption dropout probability: 0.0%

• LoRA Rank: 1

• LoRA Alpha: 1.0

• LoRA Dropout: 0.1

• LoRA initialisation style: default

Datasets

antelope-data-256

• Repeats: 0
• Total number of images: 29
• Total number of aspect buckets: 1
• Resolution: 0.065536 megapixels
• Cropped: True
• Crop style: center
• Crop aspect: square
• Used for regularisation data: No

Inference

import torch
from diffusers import DiffusionPipeline

model_id = 'HiDream-ai/HiDream-I1-Full'
adapter_id = 'bghira/hidream-controlnet-lora-test'
pipeline = DiffusionPipeline.from_pretrained(model_id, torch_dtype=torch.bfloat16) # loading directly in bf16
pipeline.load_lora_weights(adapter_id)

prompt = "A photo-realistic image of a cat"
negative_prompt = 'ugly, cropped, blurry, low-quality, mediocre average'

## Optional: quantise the model to save on vram.
## Note: The model was quantised during training, and so it is recommended to do the same during inference time.
from optimum.quanto import quantize, freeze, qint8
quantize(pipeline.transformer, weights=qint8)
freeze(pipeline.transformer)
    
pipeline.to('cuda' if torch.cuda.is_available() else 'mps' if torch.backends.mps.is_available() else 'cpu') # the pipeline is already in its target precision level
model_output = pipeline(
    prompt=prompt,
    negative_prompt=negative_prompt,
    num_inference_steps=16,
    generator=torch.Generator(device='cuda' if torch.cuda.is_available() else 'mps' if torch.backends.mps.is_available() else 'cpu').manual_seed(42),
    width=256,
    height=256,
    guidance_scale=4.0,
).images[0]

model_output.save("output.png", format="PNG")