Enhanced Platform Awareness – For PCIe Devices

There is a growing demand for the cloud OS to have a greater awareness of the capabilities of the platforms it controls. This blueprint aims to facilitate more optimal VM placement and help drive tangible improvements for cloud tenants.

The blueprint presents an approach on how to leverage PCIe devices in cloud infrastructure, and looks in particular at Single Root IO Virtualization (SR-IOV) as one technology that can be used to dramatically improve the performance available to the virtual machine. The initial focus is on accelerator devices and builds upon ideas already proposed in several forum discussions and the following blueprints:
• nova/xenapi-gpu-passthrough (https://blueprints.launchpad.net/nova/+spec/xenapi-gpu-passthrough.
• nova/pci-passthrough https://blueprints.launchpad.net/nova/+spec/pci-passthrough.
• nova/pci-passthrough-and-sr-iov https://blueprints.launchpad.net/nova/+spec/pci-passthrough-and-sr-iov.