When I open a new notebook on Google Colab I see a "POWER LEVEL" indicator with a battery symbol at the top. I can click it and choose three different power levels: low, medium and high.
I don't remember ever seeing this before on Google Colab. I believe this is a new undocumented feature.
Does anybody know what is the effect of changing power levels?
Colab Pro limits RAM to 32 GB while Pro+ limits RAM to 52 GB. Colab Pro and Pro+ limit sessions to 24 hours.
Google Colab notebooks have an idle timeout of 90 minutes and absolute timeout of 12 hours. This means, if user does not interact with his Google Colab notebook for more than 90 minutes, its instance is automatically terminated. Also, maximum lifetime of a Colab instance is 12 hours.
To summarize, even a mid-range GPU dramatically outperforms the free Google Colab environment.
The number of TPU core available for the Colab notebooks is 8 currently. Takeaways: From observing the training time, it can be seen that the TPU takes considerably more training time than the GPU when the batch size is small. But when batch size increases the TPU performance is comparable to that of the GPU.
Power level is an April fools joke feature that adds sparks and combos to cell editing --
https://twitter.com/GoogleColab/status/1112708634905964545
It is enabled and disabled in the notebook settings accessed via the Tools -> Settings menu item.
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