On Mon, Nov 5, 2018 at 11:02 PM Manuel Sopena Ballesteros <manuel...@garvan.org.au> wrote: > > Dear Openstack community. > > > > I am setting up pci passthrough for GPUs using aliases. > > > > I was wondering the meaning of the fields device_type and numa_policy and how > should I use them as I could not find much details in the official > documentation. numa policy is used to configure the affinity policy for the passthrough device. it was introduced by https://specs.openstack.org/openstack/nova-specs/specs/queens/implemented/share-pci-between-numa-nodes.html#proposed-change not that the flavor extra specs and image metadata also descibed by that spec are stil outstanding and may be added in the future.
the device type is a legacy hack that was added when nova's pci passthough support was extended to enable neutron sriov. when using flavor based pci passthough using aliases the type should always be set to Type-PCI Type-PF and Type-VF in general should only be used for nics that will be used with neutron sriov port types. you technically can us the other device types in the alias but nova will only record a device as Type-PF or Type-VF if physical_network is set in the pci whitelist which is used to indicate the neutron physnet the device is attached too. in the case of GPUs you can ignore Type-PF and Type-VF. you should also know that Type-PCI can refer to either the full pci device or a virtual function allocated form a device. an example alias is available in the code here https://github.com/openstack/nova/blob/master/nova/pci/request.py#L18 | [pci] | alias = '{ | "name": "QuickAssist", | "product_id": "0443", | "vendor_id": "8086", | "device_type": "type-PCI", | "numa_policy": "legacy" | }' in this case the alias consumes an entire QuickAssist (QAT) device with the legacy numa policy. if the QAT device was subdivided using sriov VFs you could request the VF instead of the PF by simply changing the product_id to that corresponding to the VF. > > > > https://docs.openstack.org/nova/rocky/admin/pci-passthrough.html#configure-nova-api-controller > > https://docs.openstack.org/nova/rocky/configuration/config.html#pci > > > > thank you very much > > > > Manuel > > > > NOTICE > Please consider the environment before printing this email. This message and > any attachments are intended for the addressee named and may contain legally > privileged/confidential/copyright information. If you are not the intended > recipient, you should not read, use, disclose, copy or distribute this > communication. If you have received this message in error please notify us at > once by return email and then delete both messages. We accept no liability > for the distribution of viruses or similar in electronic communications. This > notice should not be removed. > __________________________________________________________________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev __________________________________________________________________________ OpenStack Development Mailing List (not for usage questions) Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
