SuccessfulKoala55 Just following up as I figured out what was happening here and could be useful for the future.

The prefilled value for Number of GPUs in the GCP Autoscaler is 1 .

When one ticks Run in CPU mode (no gpus) it hides the GPU Type and Number of GPUs fields. However, the value which was these fields are still submitted in the API Request (I'm guessing here) when the Autoscaler is launched.

Hence, to get past this, you need to explicitly set Number of GPUs to 0 before ticking the Run in CPU mode (no gpus) which does not seem like the correct behaviour and is likely a bug.