I don't think so.

~~~

The most common case will be that the admin only sets hw:numa_nodes and then the flavor vCPUs and memory will be divided equally across the NUMA nodes. When a NUMA policy is in effect, it is mandatory for the instance's memory allocations to come from the NUMA nodes to which it is bound except where overriden by hw:numa_mem.NN.

~~~

Here are the implementation documents since Juno release:

https://opendev.org/openstack/nova-specs/src/branch/master/specs/juno/implemented/virt-driver-numa-placement.rst

https://opendev.org/openstack/nova-specs/commit/45252df4c54674d2ac71cd88154af476c4d510e1?

On Wed, May 10, 2023 at 11:31 AM hai wu <haiwu.us@gmail.com> wrote:

Is there any concern to enable 'hw:numa_nodes=1' on all flavors, as
long as that flavor can fit into one numa node?

--

Alvaro Soto 

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