[berkut]

Embree doesn't use MKL, and in fact, the code runs very well on AMD machines, as can be seen by any recent Cinebench version benchmark (of which AMD themselves often show the result) which utilises Embree for intersection.

What will be interesting is other architecture support entirely (ARM) possibly being added to it by contributors. I doubt it will happen, but Intel did accept patches for TBB for ARM and POWERPC, so it's technically possibly...