Hi Brice,
> By the way, lstopo shows distance information, but it does not change it > depending on -l/-p. We may want to fix this. > Thanks for the hint, I din't know it. > Actually, Linux only uses the number of hops on one specific MIPS > architecture (SGI IP27 Origin 200/2000). In other cases, it uses the > cpu-to-memory latency (usually reported by ACPI or so). > Well, this is interesting. numactl --hardware shows the number of hops, regarding to the information from that private BZ. Where does hwloc takes the distance information? Is it stored with hwloc-gather-topology script? If yes, could me send me the output of hwloc-gather-topology for some NUMA box? I don't have access to any NUMA running a recent version of kernel. > > > On some systems number of hops does not represent memory bandwidth. I > > have reported this in BZ 655041 > > > > https://bugzilla.redhat.com/show_bug.cgi?id=655041 > > This bug is private unfortunately. > > > In any case I believe that hwloc-report-instances would be useful > > utility. Please let me know your opinion. > > Agreed. > OK, I will try to implement it as time permits. Thanks Jirka
