.
Schedulers are currently by default in PyTorch, but are designed to be framework independent (partial Jax support currently exists).
Many diffusion pipelines, such as StableDiffusionPipeline and DiTPipeline can use any of KarrasDiffusionSchedulers

Schedulers Summary
	
The following table summarizes all officially supported schedulers, their corresponding paper
Scheduler
Paper
ddim
Denoising Diffusion Implicit Models
ddpm
Denoising Diffusion 