Overview
The KSampler and Empty Latent Image nodes determine much of the behavior of a generation. Their settings control the starting noise, output dimensions, number of images, duration of denoising, prompt adherence, sampling algorithm, scheduling strategy, and degree of transformation.
These controls do not operate independently. A model family may be optimized for a particular resolution, a Lightning checkpoint may need far fewer steps, and a fixed seed is only reproducible when the other settings remain unchanged.