On Fri, Jun 02, 2023 at 02:36:37PM +0530, Gautham R. Shenoy wrote: > Yes, this is what the topology looks like > > |---------------------------------------------------------------------------------| > | | > | ----------- ----------- ----------- ----------- ----------- ----------- | > | |(0-7) | |(8-15) | |(16-23) | |(48-55) | |(56-63) | |(64-71) | | > | | LLC0 | | LLC1 | | LLC2 | | LLC6 | | LLC7 | | LLC8 | | > | |(96-103) | |(104-111)| |(112-119)| |(144-151)| |(152-159)| |(160-167)| | > | ----------- ----------- ----------- ----------- ----------- ----------- | > | | > | | > | ----------- ----------- ----------- ----------- ----------- ----------- | > | |(24-31) | |(32-39) | |(40-47) | |(72-79) | |(80-87) | |(88-95) | | > | | LLC3 | | LLC4 | | LLC5 | | LLC9 | | LLC10 | | LLC11 | | > | |(120-127)| |(128-135)| |(136-143)| |(168-175)| |(176-183)| |(184-191)| | > | ----------- ----------- ----------- ----------- ----------- ----------- | > | | > |---------------------------------------------------------------------------------| Yup, that's the pictures I found online. > > I would think it is the latter since NPS4 does that but let me go verify. > > 2 groups of 6 each is the vertical split which is NPS2. > > 4 groups of 3 each is the vertical and horizontal split, which is > NPS4. > > In both these cases, currently the domain hierarchy > > SMT --> MC --> NODE --> NUMA > > where the NODE will be the parent of MC and be the 2nd level wakeup domain. > > If we define CLS to be the group with 3 LLCs, which becomes the parent > of the MC domain, then, the hierarchy would be > > NPS1 : SMT --> MC --> CLS --> DIE > NPS2 : SMT --> MC --> CLS --> NODE --> NUMA > NPS4 : SMT --> MC --> CLS --> NUMA > > NPS2 will have 5 domains within a single socket. Oh well! I think cluster/CLS is taken for L2, we should not re-purpose that for groups of L3. Anyway, yes, 5 levels. Shouldn't be a problem though, right?
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