On 11/28/2011 03:45 PM, Brice Goglin wrote: ... > Current Intel platforms have 2 QPI links going to I/O hubs. Most servers > with many sockets (4 or more) thus have each I/O hub connected to only 2 > processors directly, so their distance is "equal" as you say. > > However, some BIOS report invalid I/O locality information. I've never > seen anything correct on any server like the above actually.
If the BIOS correctly reported the locality, how would the devices show up in hwloc-info and lstopo? Would there be a Group containing the 2 NUMA Nodes and the PCI devices? > > Yes, unfortunately PCI detection isn't based on reading files, so > there's no easy way to "dump" it during gather-topology.sh. I knew this once, and remembered it when you explained it. thanks, --Guy
