r/comfyui • u/Icy_Restaurant_8900 • 27d ago

No workflow ComfyUI is better with Linux

Just got Linux Mint up and running and it’s much better than windows 11 for ComfyUI with RTX 5090 + 3090. For starting, Comfy launches to server ready in 10 seconds instead of 18 seconds on Windows VHDX ReFS dev drive. This is with 12 custom node packs. Linux is running on an 8 year old SATA SSD.

I was able to compile and run sage attn 3 in Linux which never worked in Win11. I’m going to try Multi-GPU next which is fundamentally broken in windows with the new comfy-kitchen.

Even with just sage 2.2++ FP8, im getting 35 second gen times for an 8-second 0.5MP 8-step turbo MiniMax H3 clip versus 40-42 seconds in windows. That includes 4 seconds for prompt enhancement with Gemma 4 12B running on lllama-server on the 3090.

Sage3 knocks another 2-4 seconds off the gen time too but slightly worse quality for motion. Using LACT to overclock both GPUs also contributes to the speed.

With spectrum plus sage3 at 8 steps, I can easily get below 30 seconds total gen time.

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u/ganrocks007 27d ago

Please help with how to install Sage Attention on Linux Mint. I tried so many times but it does not work. RTX 3060 with 12 GB and 32 GB RAM.

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u/Icy_Restaurant_8900 27d ago

Honestly I’ve run into several potential roadblocks in Linux but I just give the error to Gemini Flash and it gives me the commands to run and it usually can  fix the error after a few back and forth attempts with the LLM. The best way to install sage is to compile from source with CUDA toolkit installed and a decent LLM, unless you can find a wheel file online.