which scheduler is "DPM++ 2s a Karras" and "DPM++ 2M Karras" ?

[ym-ctw]

Model/Pipeline/Scheduler description

I used scheduler 【DPM ++ 2s a Karras】 and 【DPM++ 2M Karras】before in sd-webui, and I know these two scheduler has better performance.
And I found that diffusers has single/multi-DPM solver , but I don't know which is DPM ++ 2s a Karras or DPM++ 2M Karras.
Could you please tell me about that? thanks!

Open source status

• The model implementation is available
• The model weights are available (Only relevant if addition is not a scheduler).

Provide useful links for the implementation

No response

[ClashSAN]

You have DPMSolverMultistepScheduler which by default is DPM++ 2M I think.

it was added here: #1132

DPM++ 2M Karras
2 = 2nd order
M = multistep
a = ancestral
Karras = special noise

[ym-ctw]

You have DPMSolverMultistepScheduler which by default is DPM++ 2M I think.

it was added here: #1132

DPM++ 2M Karras 2 = 2nd order M = multistep a = ancestral Karras = special noise

Thanks for your detailed reply! I will try it later!

[CrazyBoyM]

so when "DPM++ 2M Karras" equal to DPMSolverMultistepScheduler, which scheduler is "DPM++ 2s a Karras"?

[AdamMayor2018]

so when "DPM++ 2M Karras" equal to DPMSolverMultistepScheduler, which scheduler is "DPM++ 2s a Karras"?

Do u have a clue now?

[CrazyBoyM]

maybe we should write it by add noise per step 

…

---Original--- From: ***@***.***> Date: Thu, Jul 6, 2023 14:23 PM To: ***@***.***>; Cc: "Ke ***@***.******@***.***>; Subject: Re: [huggingface/diffusers] which scheduler is "DPM++ 2s a Karras"and "DPM++ 2M Karras" ? (Issue #2635) so when "DPM++ 2M Karras" equal to DPMSolverMultistepScheduler, which scheduler is "DPM++ 2s a Karras"? Do u have a clue now? — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you commented.Message ID: ***@***.***>

[patrickvonplaten]

DPM++ 2M Karras => DPMSolverMultistepScheduler.from_config(..., use_karras=True)
DPM ++ 2M a Karras == => DPMSolverMultistepScheduler.from_config(..., use_karras=True, algorithm_type="sde-dpmsolver++")

I'd say

[bruce2233]

Thanks

[saeedkhanehgir]

@patrickvonplaten

Thanks for sharing these notes.

In this link , I read the best sampler for SDXL is DPM++ 2SA Karras , I want to know How can I implement this sampler with diffusers, Can you help me?

thanks