[gnufx]

I was thinking of the usual complaint about Intel not supporting AMD hardware that is common in HPC.

We don't know what that example was actually measuring, except apparently not the same thing for BLIS and MKL. On the basis of only that, it's not reasonable to say "just so much faster", in particular for what I care about. I have Zen2 measurements (unfortunately only in a VM) using the BLIS test/3 framework. MKL came out nearly as fast as vanilla BLIS 0.7 and OpenBLAS on serial DGEMM, less so on the rest of D level 3, and nowhere close with S, C, and Z. Similarly for one- and two-socket OpenMP. At least in that "2021" version of MKL, there's only a Zen DGEMM kernel.