What does numactl -H report when running in a Compute Engine VM?

[EO_01]

Hi,

As per subject, what does numactl -H report when run in a compute engine VM?
I would guess it reports a 'made up' setup but not the real underlying CPU layouts allocated by Google when provisioning the VM.

Am I correct?

Thanks!

[RonEtch]

Hi @EO_01 

Welcome to Google Cloud Community!

Kindly note that Google Cloud uses Open Source Software (OSS) KVM for Hypervisors, know more about Compute Engine FAQs and KVM Security of Google Cloud.

It's also important to know that "Google does not use QEMU, the user-space virtual machine monitor and hardware emulation". The said command is running on the background and should let that platform handle it for you.

Since the underlying systems are OSS, you can check this guide about numactl and this related google gce-discussion for added information.

I hope this information is helpful.

If you need further assistance, you can always file a ticket on our support team.