Zen will use a scheduling model that is similar to Intel's and it will use competitive hardware and simulation to define any needed scheduling or NUMA changes. Two cores will still share the L3 cache but not the FPU. This because in 14nm there is enough space for the FPU inside of the Zen core and this approach might be faster.Full details over here.
We mentioned this in late April where we released a few details about the 16 core, 32 thread Zen based processor with Greenland based graphics stream processor. Zen will apparently be ISA compatible with Haswell/Broadwell style of compute and the existing software will be compatible without requiring any programming changes.
AMD Zen moves away from shared FPU
Posted on Thursday, Aug 13 2015 @ 12:32 CEST by Thomas De Maesschalck