Ubuntu - GPU - PCIe atomics

Supports SMP-type operations across a PCIe network to allow for things like offloading tasks between CPU cores and accelerators like a GPU.

Check if your system supports PCIe atomics

sudo dmesg | grep -i kfd

returns:

[    5.648377] kfd kfd: amdgpu: Allocated 3969056 bytes on gart
[    5.728369] kfd kfd: amdgpu: added device 1002:744c

NOTE: Your system supports PCIe atomics if you find something like

kfd kfd: added device 1002:15d8

Without PCIe atomics you will get something like

kfd: skipped device 1002:7300, PCI rejects atomics