Wiki: AMDGPU tip to prevent restarts on Linux

[waltercool]

Hi,

Stable Diffusion works mostly fine for me using Navi22, but something it always bothered me are the random restarts when generating images.

Something I discovered after few months, is a solution for this.

Basically, if you don't have any cache for miopen, the computer needs to generate it, and seems like the computer gets into some lock or just a temperature thing.

My solution to prevent random restarts when generating is doing a couple of generations with forced low perfomance DPM. You may need few generations for every use case, txt2img, Hires, img2img, etc.

echo 'low' > /sys/module/amdgpu/drivers/pci\:amdgpu/0000\:03\:00.0/power_dpm_force_performance_level

Once you feel confident with the results, put it back to normal, once cache is there, you won't trigger any issue

echo 'auto' > /sys/module/amdgpu/drivers/pci\:amdgpu/0000\:03\:00.0/power_dpm_force_performance_level

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Another tip to improve generation, is defaulting VAE to TAESD. It's quick and doesn't get stuck. It looks lot better than Tiled VAE extension.

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I had to use --no-half-vae and --medvram to prevent freezes, but not anymore with those previous tips. Both SD and SDXL works very fine.