Please reopen the bug report by changing the status back to new if you
think it's related to Nova.
** Changed in: nova
Status: New => Invalid
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https://bugs.launchpad.net/bugs/2049121
Title:
Boot one VM with two GPU(in same numa)by pci passthrough cannot have
GPUDirect P2P capability
Status in OpenStack Compute (nova):
Invalid
Bug description:
Hi,
I have two GPU cards, all of them was connect with one same numa CPU socket
as below link info:
https://paste.opendev.org/show/b7Qi8qCnbLVxO2W0JdQw/
I can boot one nova instance successfully with the two GPU cards by
PCI Passthrough way.
but in the booted instances, use deviceQuery method would get the below
message:
Peer access from NVIDIA RTX 6000(GPU0) -> NVIDIA RTX 6000(GPU1): NO
Peer access from NVIDIA RTX 6000(GPU1) -> NVIDIA RTX 6000(GPU0): NO
The expected return should be as below：
Peer access from NVIDIA RTX 6000(GPU0) -> NVIDIA RTX 6000(GPU1): YES
Peer access from NVIDIA RTX 6000(GPU1) -> NVIDIA RTX 6000(GPU0): YES
so that the memory can be shared between the two GPUs.
I'm running Openstack Xena release in Intel Xeon Gold 5220R CPU
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