> > Maybe even something like so; which would make Power <= 6 use the > default topology and result in a shared LLC between the on package cores > etc.. > > Power7 is then special for not having a shared L3 but having the > asymmetric SMT thing and Power8 again gains the shared L3 while > retaining the asymmetric SMT stuff.
Asymmetric SMT is only for Power 7. Its not enabled for Power 8. On Power8, if there are only 2 active threads assume thread 0 and thread 4 running in smt 8 mode, it would internally run as if running in smt 2 mode without any scheduler tweaks. (This is unlike power 7). -- Thanks and Regards Srikar Dronamraju
