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content/blogs/fastvideo_post_training/index.md

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{{<youtube AvCBPBf2o4M>}}
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## The FastWan Series
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### How Fast is FastWan?
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{{< image src="img/fastwan.png" alt="denoising speedup" width="100%" >}}
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Below, we demonstrate how each module accelerates the DiT denoising time (without text encoder and vae) on a single H200 GPU.
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{{< center >}}
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{{< table title="Table 2: DiT denoising time comparisons of different methods. All numbers can be reproduced with this [script](https://github.com/hao-ai-lab/FastVideo/blob/main/scripts/inference/v1_inference_wan_VSA_DMD.sh)." >}}
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| Modules | Wan 2.2 5B 720P | Wan2.1 14B 720P | Wan2.1 1.3B 480P |
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|:-------------------------:|:---------------:|:----------------:|:----------------:|
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| FA2 | 157.21s | 1746.5s | 95.21s |
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| FA2 + DMD | 4.67s | 52s | 2.88s |
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| FA3+DMD | 3.65s | 37.87s | 2.14s |
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| FA3 + DMD + torch compile | 2.64s | 29.5s | 1.49s |
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| VSA + DMD + torch compile | -- | 13s | 0.98s |
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{{< /center >}}
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| **FA2** | 157.21s | 1746.5s | 95.21s |
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| **FA2 + DMD** | 4.67s | 52s | 2.88s |
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| **FA3+DMD** | 3.65s | 37.87s | 2.14s |
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| **FA3 + DMD + torch compile** | 2.64s | 29.5s | 1.49s |
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| **VSA + DMD + torch compile** | -- | 13s | 0.98s |
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{{</ table >}}
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All numbers can be reproduced with this [script](https://github.com/hao-ai-lab/FastVideo/blob/main/scripts/inference/v1_inference_wan_VSA_DMD.sh)
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### Online Demo using FastVideo
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Try the FastWan demo [here]()!
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Our demo is served on 16 H200s generously provided by [GMI Cloud](https://www.gmicloud.ai/).
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🚀🚀👉 Try our [demo](https://fastwan.fastvideo.org/) now! Our demo is served on 16 H200s generously provided by [GMI Cloud](https://www.gmicloud.ai/).
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{{< image src="img/demo.png" alt="screenshot of demo" width="100%" >}}
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### Try FastWan Locally!
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FastWan is runnable on a wide range of hardware with [FastVideo](https://github.com/hao-ai-lab/FastVideo).
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FastWan is runnable on a wide range of hardware including Nvidia H100, H200, 4090, and Apple Sicicon. Check out [FastVideo](https://github.com/hao-ai-lab/FastVideo/tree/main?tab=readme-ov-file#key-features) to get started.
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<!-- We list below the VRAM needed for the 1.3B and 5B models under variable resolution.
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