Wonderful !
Tank you very much everybody.
Guillaume
2011/1/28 Brice Goglin
> You have to choose 5 cores manually:
>
> /* get all my core objects */
> hwloc_obj_t core1 = hwloc_get_obj_by_type(topology, HWLOC_OBJ_CORE,
> );
> hwloc_obj_t core2 = hwloc_get_obj_by_type(topology, HWLOC_OBJ_CORE,
>
You have to choose 5 cores manually:
/* get all my core objects */
hwloc_obj_t core1 = hwloc_get_obj_by_type(topology, HWLOC_OBJ_CORE,
);
hwloc_obj_t core2 = hwloc_get_obj_by_type(topology, HWLOC_OBJ_CORE,
);
hwloc_obj_t core3 = hwloc_get_obj_by_type(topology, HWLOC_OBJ_CORE,
);
hwloc_obj_t cor
Yes. There is a way to do that. You bind it to a cpuset.
It will be easier if you know the set of cpu cores you want to bind
to, but I suppose you could dynamically alter the cpuset.
I haven't tried that though.
On Fri, Jan 28, 2011 at 11:33 AM, guillaume Arnal
wrote:
> Yes, this helps.
>
>
Yes, this helps.
However, I complete my second question : is there a way to force my current
process to run on 'n' cores ?
For example : I have 20 cores for real in my architecture (I'm dreaming
...), but I wish that my process run on only 5 cores. Is it possible with
hwloc ?
Essayez avec cette o
Yeah strange. Probably better to bind to a specific core and be happy. :-)
On Fri, Jan 28, 2011 at 10:03 AM, Samuel Thibault
wrote:
> guillaume Arnal, le Fri 28 Jan 2011 17:42:31 +0100, a écrit :
>> Actually, i want to know where my current thread is executing. But is seens
>> to
>> be impossi
guillaume Arnal, le Fri 28 Jan 2011 17:42:31 +0100, a écrit :
> Actually, i want to know where my current thread is executing. But is seens to
> be impossible, jeez ...
It's not impossible, it's just not implemented in hwloc (yet).
Samuel
Jim Burnes, le Fri 28 Jan 2011 17:51:00 +0100, a écrit :
> While hwloc might not support it, should your local threading library
> do it? (ie: pthread?)
There's no standard about it. The problem is that the value can be
expired right after you have gotten it, that's probably why nobody
managed to
While hwloc might not support it, should your local threading library
do it? (ie: pthread?)
On Fri, Jan 28, 2011 at 9:43 AM, guillaume Arnal
wrote:
>
> ... iT seeMs to be ... sorry
>
> 2011/1/28 guillaume Arnal
>>
>> Actually, i want to know where my current thread is executing. But is
>> seen
... iT seeMs to be ... sorry
2011/1/28 guillaume Arnal
> Actually, i want to know where my current thread is executing. But is seens
> to be impossible, jeez ...
>
> Thank you for your answer.
> Guillaume
>
> 2011/1/28 Samuel Thibault
>
> guillaume Arnal, le Fri 28 Jan 2011 15:32:40 +0100, a éc
Actually, i want to know where my current thread is executing. But is seens
to be impossible, jeez ...
Thank you for your answer.
Guillaume
2011/1/28 Samuel Thibault
> guillaume Arnal, le Fri 28 Jan 2011 15:32:40 +0100, a écrit :
> > First: I'm looking for a way to find which core is using by t
guillaume Arnal, le Fri 28 Jan 2011 15:32:40 +0100, a écrit :
> First: I'm looking for a way to find which core is using by the current
> thread.
> (maybe with hwloc_get_thread_cpubind ??)
You mean where the current thread is actually executing, not where it is
just allowed to execute? Hwloc doe
Le 28/01/2011 15:32, guillaume Arnal a écrit :
> Hi everyone,
>
> I'm beginner in using hwloc and I have some questions.
>
> First: I'm looking for a way to find which core is using by the
> current thread. (maybe with hwloc_get_thread_cpubind ??)
>
> Second: is there a way to set the number of cor
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