Hi,

I want to know whether SRIOV VF can be used cross socket (e.g PF is on socket 
0, so its VFs also on socket 0, and VM is on socket 1).

My testing is to launch several VMs with dedicated vCPU with VF. Firstly, I saw 
VMs are located on socket 0. When the CPUs on socket 0 are used up, I expect VM 
can be scheduled to socket 1 or some error happens. In indeed, I got following 
errors:

Insufficient compute resources: Requested instance NUMA topology together with 
requested PCI devices cannot fit the g", "code": 500, "details": "  File 
\"/usr/lib/python2.7/dist-packages/nova/conductor/manager.py\", line 393, in 
build_instances

But what I cannot understand is what does "NUMA topology" indicate here? How it 
is related to NUMA topology? Can anybody help explain?

Best Regards
Xu Rongjie (Max)



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