very slow training speed using scannet++ dataset

[ZiyangYan]

Hi, I apply igs2gs using a scannet++ dataset but the training speed is very slow (GPU: 40G A40).
The checkpoint I used is from splatfacto with 30K iteration.

[cvachha]

Hi, I'm thinking this is running slow due to Instruct-Pix2Pix. Instruct-GS2GS applies Instruct-Pix2Pix on every image in the training set (for the first [num of images] iterations) which ideally should have an image resolution of 512x512 or less (larger images run slower). Instruct-GS2GS will train the splat for 2.5k iterations after editing each input image.

If the image resolution is large, you can downscale it by adding nerfstudio-data --downscale-factor {2,4,6,8} to the end of your ns-train commands.

Let me know if this helps with the speed.