# tune.Tuner in google colab not use GPU

**URL:** <https://discuss.ray.io/t/tune-tuner-in-google-colab-not-use-gpu/10172>\
**Category:** Uncategorized\
**Created:** [April 11, 2023, 12:53am UTC](https://discuss.ray.io/t/tune-tuner-in-google-colab-not-use-gpu/10172 "2023-04-11T00:53:39Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![overloader](https://avatars.discourse-cdn.com/v4/letter/o/7cd45c/32.png) [@overloader](https://discuss.ray.io/u/overloader)\
**Post date:** [April 11, 2023, 12:53am UTC](https://discuss.ray.io/t/tune-tuner-in-google-colab-not-use-gpu/10172/1 "2023-04-11T00:53:39Z")

</div>

Good afternoon

Can you please tell me why when I run tune.Tune the GPU is not used in google colab. Does anyone have experience or have an instruction/snippet on how rllib works with colab ?

I using:  
ray.init(local\_mode=True, num\_gpus=1)