Indeed, and you can be told you have to use it even when it won't compile the code, or the result won't run correctly (and obviously you should use it and MKL

Indeed, and you can be told you have to use it even when it won't compile the code, or the result won't run correctly (and obviously you should use it and MKL on AMD hardware too). At least it's not as bad as the infamous "Pentium GCC" from long ago.