How to use GPU rather than CPU

[SoftologyPro]

Hello,

Trying the first example to separate an mp3. ie

from asteroid.models import BaseModel
import soundfile as sf

model = BaseModel.from_pretrained("mpariente/DPRNNTasNet-ks2_WHAM_sepclean")
model.separate("music.mp3",resample=True)

It worked (well worked as in just made 2 distorted versions of the source music without separating anything it seems) but it uses 100% CPU and seems to ignore the GPU.
How do I tell it to use the GPU?
Thanks.