Add SD3.5-large 4bit quantized #43
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What does this PR do?
This pull request adds support for a new 4-bit quantized model version (
argmaxinc/mlx-stable-diffusion-3.5-large-4bit-quantized) across various files. The changes include updating model configurations, loading mechanisms, and script parameters to handle this new model variant.Model Configuration Updates:
python/src/diffusionkit/mlx/__init__.py: Added entries for the 4-bit quantized model inMMDIT_CKPTandT5_MAX_LENGTH. [1] [2]python/src/diffusionkit/mlx/model_io.py: Updated_MODELS,_PREFIX,_CONFIG,DEPTH, andMAX_LATENT_RESOLUTIONto include the new model. [1] [2] [3]Model Loading Adjustments:
python/src/diffusionkit/mlx/model_io.py: Modifiedload_mmdit,load_vae_decoder, andload_vae_encoder(vae related functions were modified as the checkpoint was pushed with modifications that are applied on the function) functions to handle the specific requirements of the 4-bit quantized model, including prefix adjustments and quantization handling. [1] [2] [3]