Mm,
there is something wrong. I'm using two thread, the first one is bound on HWLOC_OBJ_PU number 2, the second one on HWLOC_OBJ_PU number 10,
and
hwloc_get_last_cpu_location() give me the same CPU index for each thread..
( machine is not SMT).
But from linux "top" command I see CPU 2 and 10 working, so bind has worked well.
2011/8/10 Samuel Thibault
<samuel.thibault@inria.fr>
Gabriele Fatigati, le Wed 10 Aug 2011 15:41:19 +0200, a écrit :
> hwloc_cpuset_t set = hwloc_bitmap_alloc();
>
> int return_value = hwloc_get_last_cpu_location(topology, set,
> HWLOC_CPUBIND_THREAD);
>
> printf( " bitmap_string: %s \n", bitmap_string[0]);
>
> give me:
>
> 0x00000800
>
> converted in binary:
>
> 100000000000
>
> So, CPU 0 I suppose,
Do you mean linear 0 or physical 0?
cpusets are always physical, 0x800 means CPU with physical number 11.
--
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