MKL-DNN is not MKL though. I think MKL-DNN is fairly specific to Intel CPUs though if you want maximum performance. It'll necessarily make certain assumptions a

MKL-DNN is not MKL though. I think MKL-DNN is fairly specific to Intel CPUs though if you want maximum performance. It'll necessarily make certain assumptions about instruction throughput and latency, something that's pretty much certain to be different on AMD in some cases. In super tight kernels such minute differences often boil down to much lower performance. So if AMD wants to do a good job, they'll need, at least in some cases, to detect AMD CPUs and JIT their own specialized kernels that perform well on AMD.