GPU utilization is zero
I run the following commands: 

```
import nemo
import nemo.collections.asr as nemo_asr
import nemo.collections.nlp as nemo_nlp
import nemo.collections.tts as nemo_tts

quartznet = nemo_asr.models.EncDecCTCModel.from_pretrained(model_name="stt_en_quartznet15x5").cuda()
English_text = quartznet.transcribe(['~/audio1.wav'])
```

But GPU utilization is zero as it can be seen from the output of `nvidia-smi
`:
![nv](https://user-images.githubusercontent.com/89482819/144546023-d8df81f2-591b-4d74-83a8-973f3d9a0e5b.jpg)

