 DPM++ 2S a Karras N/A very similar to  DPMSolverSinglestepScheduler(use_karras_sigmas=True, ...) DPM++ SDE DPMSolverSinglestepScheduler  DPM++ SDE Karras DPMSolverSinglestepScheduler init with use_karras_sigmas=True DPM2 KDPM2DiscreteScheduler  DPM2 Karras KDPM2DiscreteScheduler init with use_karras_sigmas=True DPM2 a KDPM2AncestralDiscreteScheduler  DPM2 a Karras KDPM2AncestralDiscreteScheduler init with use_karras_sigmas=True DPM adaptive N/