Yes, one and only one, the top-level root object of the topology.
This is somehow implied by the doc of HWLOC_OBJ_MACHINE itself ("The
root object type"), I guess I should make it even more clear there? If
there's another place in the doc where this should be added/clarified,
please let me know.
Brice
Le 05/02/2018 à 23:19, Madhu, Kavitha Tiptur a écrit :
> Hi
>
> Thanks for the response. Could you also confirm if hwloc topology
> object would have only machine node?
>
> Thanks,
> Kavitha
>
>
>
>> On Feb 5, 2018, at 4:14 PM, Brice Goglin <brice.gog...@inria.fr
>> <mailto:brice.gog...@inria.fr>> wrote:
>>
>> Hello,
>>
>> Oops, sorry, this sentence is obsolete, I am removing it from the doc
>> right now.
>>
>> We don't support the assembly of multiple machines in a single hwloc
>> topology anymore. For the record, this feature was a very small
>> corner case and it had important limitations (you couldn't bind
>> things or use cpusets unless you were very careful about which host
>> you were talking about), and it made the core hwloc code much more
>> complex.
>>
>> Thanks for the report
>> Brice
>>
>>
>> Le 05/02/2018 à 23:02, Madhu, Kavitha Tiptur a écrit :
>>> Hi
>>>
>>> I have a question on topology query. The hwloc 2.0.0 documentation
>>> states that "Additionally it may assemble the topologies of multiple
>>> machines into a single one so as to let applications consult the
>>> topology of an entire fabric or cluster at once.”. Since “system”
>>> object type has been removed from hwloc, does this statement mean
>>> that multiple “machine” nodes in the topology object would be
>>> combined to one? I can see in function“hwloc_topology_check” that
>>> machine node is at depth 0 and there are no machine nodes at depth
>>> other than 0. Can anyone confirm this?
>>>
>>> Thanks
>>> Kavitha
>>>
>>>
>>> _______________________________________________
>>> hwloc-users mailing list
>>> hwloc-users@lists.open-mpi.org
>>> https://lists.open-mpi.org/mailman/listinfo/hwloc-users
>>
>> _______________________________________________
>> hwloc-users mailing list
>> hwloc-users@lists.open-mpi.org <mailto:hwloc-users@lists.open-mpi.org>
>> https://lists.open-mpi.org/mailman/listinfo/hwloc-users
>
>
>
> _______________________________________________
> hwloc-users mailing list
> hwloc-users@lists.open-mpi.org
> https://lists.open-mpi.org/mailman/listinfo/hwloc-users
_______________________________________________
hwloc-users mailing list
hwloc-users@lists.open-mpi.org
https://lists.open-mpi.org/mailman/listinfo/hwloc-users
