I first tried it with 395
I tried running it with the same prompt using dgx spark
I changed the settings and tried 395 again
All three videos were done with the same prompt, and it seems that comfyui supports cuda well, so the speed is good.
| | 395 1st | 395 2nd | SPARK |
| --- | ------- | ------- | ----- |
| Time | 67 minutes | 26 minutes 45 seconds | 4 minutes 2 seconds |
| Steps per | 187 seconds | 80 seconds | 12 seconds |
| File | 235KB | 806KB | 504KB |
| | 395 (ROCm) | SPARK (CUDA) |
| ------------ | ------------------ | -------------------- |
| diffusion | FP8 scaled (20G) | INT8 convrot (19.5G) |
| text encoder | INT8 convrot (26G) | NVFP4 AWQ (14.6G) |
Although there is a slight difference in the models, the fact that the speed difference is this much suggests that it's not a problem with the model but something else.
Spark is awesome!
