diff --git a/ldm/modules/diffusionmodules/util.py b/ldm/modules/diffusionmodules/util.py index c6b2eb4c07..e93cf49a4d 100644 --- a/ldm/modules/diffusionmodules/util.py +++ b/ldm/modules/diffusionmodules/util.py @@ -65,10 +65,8 @@ def make_ddim_timesteps( if ddim_discr_method == 'uniform': c = num_ddpm_timesteps // num_ddim_timesteps if c < 1: - c = 1 - - # remove 1 final step to prevent index out of bound error - ddim_timesteps = np.asarray(list(range(0, num_ddpm_timesteps, c)))[:-1] + c = 1 + ddim_timesteps = (np.arange(0, num_ddim_timesteps) * c).astype(int) elif ddim_discr_method == 'quad': ddim_timesteps = ( ( @@ -86,6 +84,7 @@ def make_ddim_timesteps( # assert ddim_timesteps.shape[0] == num_ddim_timesteps # add one to get the final alpha values right (the ones from first scale to data during sampling) steps_out = ddim_timesteps + 1 + # steps_out = ddim_timesteps if verbose: print(f'Selected timesteps for ddim sampler: {steps_out}')