Ok,
but i dont' understand how lstopo works. Suppose on the physical die the
disposition of my cores non SMT) are like this:
Socket:
______________
| ____ ____ |
| |*core* | |*core* | |
| ____ ____ |
| |*core* | |*core* | |
| ____ ____ |
| |*core* | |*core* | |
| ______________|
lstopo how create the numerations? (sorry for the horrible figure). How the
numeration start? It consider physical OS index to list and create cores
topology? If yes, maybe Core L#0 and Core L#1 in a single socket are
physically near.
2011/8/4 Samuel Thibault <samuel.thibault_at_[hidden]>
> Gabriele Fatigati, le Thu 04 Aug 2011 15:52:09 +0200, a écrit :
> > how the topology gave by lstopo is built? In particolar, how the logical
> index
> > P# are initialized?
>
> P# are not logical indexes, they are physical indexes, as displayed in
> /proc/cpuinfo & such.
>
> The logical indexes, L#, displayed when passing the -l option to lstopo,
> are numbered simply linearly, after having sorted the PUs according to
> topology.
>
> Samuel
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--
Ing. Gabriele Fatigati
HPC specialist
SuperComputing Applications and Innovation Department
Via Magnanelli 6/3, Casalecchio di Reno (BO) Italy
www.cineca.it Tel: +39 051 6171722
g.fatigati [AT] cineca.it
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