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SnapFusion: Text-to-Image Diffusion Model on Mobile Devices within Two Seconds
Yanyu Li · Huan Wang · Qing Jin · Ju Hu · Pavlo Chemerys · Yun Fu · Yanzhi Wang · Sergey Tulyakov · Jian Ren

Thu Dec 14 03:00 PM -- 05:00 PM (PST) @ Great Hall & Hall B1+B2 #804
Event URL: https://snap-research.github.io/SnapFusion/ »
Text-to-image diffusion models can create stunning images from natural language descriptions that rival the work of professional artists and photographers. However, these models are large, with complex network architectures and tens of denoising iterations, making them computationally expensive and slow to run. As a result, high-end GPUs and cloud-based inference are required to run diffusion models at scale. This is costly and has privacy implications, especially when user data is sent to a third party. To overcome these challenges, we present a generic approach that, for the first time, unlocks running text-to-image diffusion models on mobile devices in **less than 2 seconds**. We achieve so by introducing efficient network architecture and improving step distillation. Specifically, we propose an efficient UNet by identifying the redundancy of the original model and reducing the computation of the image decoder via data distillation. Further, we enhance the step distillation by exploring training strategies and introducing regularization from classifier-free guidance. Our extensive experiments on MS-COCO show that our model with $8$ denoising steps achieves better FID and CLIP scores than Stable Diffusion v$1.5$ with $50$ steps. Our work democratizes content creation by bringing powerful text-to-image diffusion models to the hands of users.

Author Information

Yanyu Li (Northeastern University)
Huan Wang
Qing Jin (Northeastern University)
Ju Hu (Snap Inc.)
Pavlo Chemerys (Snap Inc.)
Yun Fu (Northeastern University)
Yanzhi Wang (Northeastern University)
Sergey Tulyakov (Snap Inc)
Jian Ren (Snap Inc.)

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