https://bugs.freedesktop.org/show_bug.cgi?id=107898
--- Comment #11 from Felix Kuehling felix.kuehling@amd.com --- rocminfo reports both the CPU and the GPU.
If OpenCL can't use the CPU as a compute device, that's probably a limitation of the OpenCL implementation.
The max memory allocation size is strange. rocminfo reports a single 16GB memory pool attached to the CPU. That's system memory from the CRAT table and looks reasonable. It should be possible to use at least 3/8 of that with the upstream KFD. If CLinfo is reporting something different I'm wondering if it's an OpenCL limitation rather than a ROCm limitation.
If you're interested in the raw information reported by KFD to user mode, checkout /sys/class/kfd/kfd/topology/nodes. On an APU there should be only one node (0). Underneath that you'll find node properties as well as memory properties that may be interesting.