docstr: Get the order of each step for sampling by the singlestep DPM-Solver.
docstr_tok: ["Get","the","order","of","each","step","for","sampling","by","the","singlestep","DPM-Solver","."]
code: def get_orders_and_timesteps_for_singlestep_solver(
      self, steps, order, skip_type, t_T, t_0, device
  ):
      """
      Get the order of each step for sampling by the singlestep DPM-Solver.
      """
      if order == 3:
          K = steps // 3 + 1
          if steps % 3 == 0:
              orders = [
                  3,
              ] * (
                  K - 2
              ) + [2, 1]
          elif steps % 3 == 1:
              orders = [
                  3,
              ] * (
                  K - 1
              ) + [1]
          else:
              orders = [
                  3,
              ] * (
                  K - 1
              ) + [2]
      elif order == 2:
          if steps % 2 == 0:
              K = steps // 2
              orders = [
                  2,
              ] * K
          else:
              K = steps // 2 + 1
              orders = [
                  2,
              ] * (
                  K - 1
              ) + [1]
      elif order == 1:
          K = steps
          orders = [
              1,
          ] * steps
      else:
          raise ValueError("'order' must be '1' or '2' or '3'.")
      if skip_type == "logSNR":
          # To reproduce the results in DPM-Solver paper
          timesteps_outer = self.get_time_steps(
              skip_type, t_T, t_0, K, device
          )
      else:
          timesteps_outer = self.get_time_steps(
              skip_type, t_T, t_0, steps, device
          )[
              torch.cumsum(
                  torch.tensor(
                      [
                          0,
                      ]
                      + orders
                  ),
                  0,
              ).to(device)
          ]
      return timesteps_outer, orders
  
imports: import torch
  import math
  import tqdm
label_desc: Use image node_id 8 for calling the UniPC obj's underlying member method code with example usage: obj.get_orders_and_timesteps_for_singlestep_solver(steps, order, skip_type, t_T, t_0, device) and returns: timesteps_outer,  orders