

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 singlestep DPM-Solver.
It computes the solution at time prev_timestep from the time timestep_list[-3].

singlestep_dpm_solver_update

<
source
>
(
model_output_list: typing