On Apr 13, 2011, at 1:32 PM, Brice Goglin wrote:
> Don't worry about the depth. Even if you have less levels of caches in
> some parts of the machine, or no hyperthreading or whatever different,
> we still build levels of identical objects. So you still get a
> consistent depth for all cores, threads, sockets, and different levels
> of caches. But obviously, you will see less objects when iterating
> through levels within the "smaller" part of the machine.
This would be good to add to the documentation; I've been doing manual traversals of hwloc trees just to future-proof/heterogeneous-proof my code (because I didn't know that the depth would always be the same for a given object type even if some branches don't have all object types).
So let's say I have a (fictitious) machine with one socket with an L1 and L2 cache for its cores, and another socket that only has an L1 cache for its cores:
socket 0 socket 1
If I traverse down through children in the tree, are you saying that there will be some kind of fake/empty object in the right sub tree corresponding to where the L2 is in the left sub tree?
For corporate legal information go to: