I've heard something a bit in between what you're both saying. For the same machine with the same seed / parameters [0], your output is deterministic. But once

I've heard something a bit in between what you're both saying. For the same machine with the same seed / parameters [0], your output is deterministic. But once you change hardware or OS you will probably get bit-level differences that won't make a macro-level difference. No idea how true that is, but on my windows machine, same params/seed is definitely deterministic. [0] a help string in the SD source code recommends the ddim_eta parameter (which isn't exposed in most web UI or GUI's, including the OP github) stay at the default 0.8 for deterministic sampling. I have no idea if this means changing the value from 0.8 produces non-deterministic results with the same hardware/os/params/seed. Or if they just mean changing this from 0.8 will make your SD not match the online model but still be deterministic itself. But in my testing, changing this value gives no useful changes to the image generation, so I keep it at 0.8