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by bb101 1705 days ago
From https://cloud.google.com/compute/docs/instances/preemptible: "Spot VMs (Preview) are the latest version of preemptible VM instances. Preemptible VMs continue to be supported for new and existing VMs, and preemptible VMs now use the same pricing model as Spot VMs. However, Spot VMs provide new features that are not supported for preemptible VMs. For example, preemptible VMs can only run for up to 24 hours at a time, but Spot VMs do not have a maximum runtime."

So preëmptible VMs are still supported but may now cost as much as 40% of non-preëmptible VMs, "to reflect the supply-demand dynamics of Compute Engine’s excess capacity." That's quite a big change from the current pricing structure.

1 comments

Looking through our history, it looks like us-east-1 preëmptible VMs were a flat 30% the cost of non-preëmptible VMs. So in the worst-case scenario, we'll be paying 10% more for the same product, but also potentially saving up to 19% in periods where GCP has excess capacity.
You'll be paying over 30% more in the worst case, just fyi.
What kind of instance was that? For A100 servers we got something like 5x price difference.

The doc says: > Preemptible VM instances are available at much lower price—a 60-91% discount—compared to the price of standard VMs.

Maybe you're using huge disks, those don't get discounts on preemptible instances from what I remember.