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Subject: Re: [hwloc-users] Thread core affinity
From: Gabriele Fatigati (g.fatigati_at_[hidden])
Date: 2011-08-01 08:47:27


Hi Brice,

so, if I inderstand well, PU P# numbers are not the same specified as
HWLOC_OBJ_PU flag?

2011/8/1 Brice Goglin <Brice.Goglin_at_[hidden]>

> Le 01/08/2011 12:16, Gabriele Fatigati a écrit :
> > Hi,
> >
> > reading a hwloc-v1.2-a4 manual, on page 15, i look an example
> > with 4-socket 2-core machine with hyperthreading.
> >
> > Core id's are not exclusive as said before. PU's id are exclusive but
> > not physically sequential (I suppose)
> >
> > PU P#0 is in socket P#0 on Core P#0. PU P#1 is in another socket!
>
> These indexes are "physical indexes" (that's the default in the
> graphical lstopo output). But we may want to make that clearer in the doc.
>
> Brice
>
>

-- 
Ing. Gabriele Fatigati
Parallel programmer
CINECA Systems & Tecnologies Department
Supercomputing Group
Via Magnanelli 6/3, Casalecchio di Reno (BO) Italy
www.cineca.it                    Tel:   +39 051 6171722
g.fatigati [AT] cineca.it