current and latter discrete timestep in the diffusion chain.


prev_timestep (int) — previous discrete timestep in the diffusion chain.


sample (torch.FloatTensor) —
current instance of sample being created by diffusion process.


Returns

torch.FloatTensor



the sample tensor at the previous timestep.


One step for the third-order multistep DPM-Solver.

scale_model_input

<
source
>
(
sample: FloatTensor
*args
**kwargs

)
→
torch.FloatTenso