On Dec 13, 2011, at 8:09 AM, Brice Goglin wrote:
> Last feeling: The more I think about PCI support, the more I wonder
> whether it will be used for anything but getting nice lstopo outputs.
> Inline helpers are already great for many cases, people just need
> locality info in most cases, so I wonder if people will actually use PCI
> as hwloc objects except in lstopo. The same question comes for GPUs.
I can't speak for GPUs, but I think the PCI information will be useful to know what devices are close to what PUs / NUMA nodes. That information can be used to make decisions about binding, for example (i.e., you want to be "close" to the specific PCI resources that you'll be using).
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