> 55 seconds on a M1 Pro MacBook with 16GB RAM to generate a picture
I've been running webui [1] on M1 MacBook Air 16GB RAM: 512x512, 50 steps takes almost 300 seconds. I'm suspecting that it is running on CPU, because the script says "Max VRAM used for this generation: 0.00G" and Activity Monitor says that it's using lots of CPU % and no GPU % at all. When M1 users are running stable diffusion, does the Activity Monitor show the GPU usage correctly?
I found the reason why it was using CPU only. I was running macOS 12.2. I upgraded to 12.5.1. and it's now using GPU. Activity Monitor shows it. Also, the time for 50 steps dropped to 175 secs. 25 steps is about 80 secs, which is closer to the MacBook Pro time..
Based on the screenshot, it looks like this is set to default to 25 steps. I've been using 50 steps on my M1 macbook pro with 16gb of ram. It takes about 1m30s per image.
On a M1 Ultra, it takes 12 seconds with 64GB RAM (same settings). While computing, the Mac Studio is pulling 100 watts of power.