The author updated their code a couple of days ago, and it runs smoothly on my end, producing results in about one minute. https://github.com/VectorSpaceLab/OmniGen

Left it running 1 hour nothing happens. Maybe this is a social experiment.

Seems far more likely it's a transient unhandled exception which isn't bubbling up to let the frontend know.

Left it running overnight. Set output to 512x512 in an attempt to speed things up. Nothing.

Second attempt, no output no matter how long it's left running.

I think there might be an issue with this website; it doesn't seem to be their official site. It's recommended to use the official code and demo: https://vectorspacelab.github.io/OmniGen/

Demo: https://huggingface.co/spaces/Shitao/OmniGen

Took a few minutes to load, some assets download at less than 1kbps. The first 3 times I got a "Connection error" after 30s. The 4th time has now been running for 5m.

On an A100 running 512x512 takes roughly 20s for one image+text input (50 iterations)