* Vincent Guittot <vincent.guit...@linaro.org> [2018-09-05 09:36:42]:
> > > > I dont know of any systems that have come with single threaded and > > multithreaded. However some user can still offline few threads in a core > > while leaving other cores untouched. I dont really know why somebody > > would want to do it. For example, some customer was toying with SMT 3 > > mode in a SMT 8 power8 box. > > In this case, it means that we have the same core capacity whatever > the number of CPUs > and a core with SMT 3 will be set with the same compute capacity as > the core with SMT 8. > Does it still make sense ? > To me it make sense atleast from a power 8 perspective, because SMT 1 > SMT 2 > SMT 4 > SMT8. So if one core is configured for SMT 2 and other core is configured for SMT4; all threads being busy, the individual threads running on SMT2 core will complete more work than SMT 4 core threads. -- Thanks and Regards Srikar Dronamraju
