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Add an option to do the final step on a CPU #98

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Add an option to do the final step on a CPU #98

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5 changes: 5 additions & 0 deletions stable_audio_tools/inference/generation.py
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Original file line number Diff line number Diff line change
Expand Up @@ -104,6 +104,7 @@ def generate_diffusion_cond(
init_noise_level: float = 1.0,
mask_args: dict = None,
return_latents = False,
cpu_final_step:bool = False,
**sampler_kwargs
) -> torch.Tensor:
"""
Expand Down Expand Up @@ -235,6 +236,8 @@ def generate_diffusion_cond(

# v-diffusion:
#sampled = sample(model.model, noise, steps, 0, **conditioning_tensors, embedding_scale=cfg_scale)
if cpu_final_step:
model.to('cpu')
del noise
del conditioning_tensors
del conditioning_inputs
Expand All @@ -244,6 +247,8 @@ def generate_diffusion_cond(
if model.pretransform is not None and not return_latents:
#cast sampled latents to pretransform dtype
sampled = sampled.to(next(model.pretransform.parameters()).dtype)
if cpu_final_step:
sampled = sampled.to('cpu')
sampled = model.pretransform.decode(sampled)

# Return audio
Expand Down