Dear Mr. Stanley Thank you for your response. I understand that I can define custom resources using Placement and Provider Config[1][2]. I've also confirmed that Intel RMD (Resource Manager Daemon) is mentioned as a use case, but it seems there's no RMD integration for OpenStack[3]. I have a further question. When defining custom resources using Placement and Provider Config, does the service responsible for resource allocation and update of allocations to instances need to be implemented independently by the creator of the custom resource? Alternatively, does a mechanism exist within OpenStack components (e.g., Nova) to support this? For example, is there a function that calls a custom hook function when creating a domain in nova-compute? I'm struggling to decide on the implementation approach. Should the resource allocation process be handled as a plugin (separable from the OpenStack codebase), or should I modify the libvirt driver to add the processing for allocating LLC and memory bandwidth? [1] https://docs.openstack.org/nova/latest/admin/managing-resource-providers.htm... [2] https://docs.openstack.org/placement/latest/ [3] https://networkbuilders.intel.com/docs/networkbuilders/resource-management-d... 3.1 Best regards, Junya Noguchi.