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 Oops, sorry, this sentence is obsolete, I am removing it from the doc 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
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