 implemented from the k-diffusion library by Katherine Crowson, and they’re also widely used in A1111. To help you map the schedulers from k-diffusion and A1111 to the schedulers in 🤗 Diffusers, take a look at the table below: A1111/k-diffusion 🤗 Diffusers Usage DPM++ 2M DPMSolverMultistepScheduler  DPM++ 2M Karras DPMSolverMultistepScheduler init with use_karras_sigmas=True DPM++ 2M SDE DPMSolverMultistepScheduler init with algorithm_type="sde