I am testing CUDA Unified Memory on Jetson Platforms (AGX Xavier), and I was trying the cudaMemAdvise hints. I was trying the following:
cudaMemAdvise(A, 1, cudaMemAdviseSetPreferredLocation, 0);
cudaMemAdvise(A, 1, cudaMemAdviseSetAccessedBy, cudaCpuDeviceId);
And tryied them the other way around (GPU for “AccessedBy” and CPU for “PreferredLocation”). However, whenever GPU (device = 0) is used in any of those hints, “cudaMemAdvise” returns error 0x65 (cudaErrorInvalidDevice). The GPU is 0 in embedded platforms, hence, the only option for the error occurring is that the hint is actually invalid for device 0 (this is what the documentation states).
Is it that hints don’t work in Jetson platforms?
Thanks for your help.