To increase the performance of the tunnel, consider installing NumPy

External IP address was not found; defaulting to using IAP tunneling.
WARNING:

To increase the performance of the tunnel, consider installing NumPy. For instructions,
please see https://cloud.google.com/iap/docs/using-tcp-forwarding#increasing_the_tcp_upload_bandwidth

$(gcloud info --format="value(basic.python_location)") -m pip install numpy

gcloud compute ssh, ~/.ssh/google_compute_engine

IAP, --tunnel-through-iap