2206.00927, and the dpmsolver++ type implements the algorithms in
https://arxiv.org/abs/2211.01095. We recommend to use dpmsolver++ with solver_order=2 for guided
sampling (e.g. stable-diffusion).


solver_type (str, default midpoint) —
the solver type for the second-order solver. Either midpoint or heun. The solver type slightly affects
the sample quality, especially for small number of steps. We empirically find that midpoint solvers are
slig