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.thiba...@inria.fr> > 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 > _______________________________________________ > hwloc-users mailing list > hwloc-us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-users > -- 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