Le 28/02/2014 02:48, Ralph Castain a écrit : > Remember, hwloc doesn't actually "sense" hardware - it just parses files in > the /proc area. So if something is garbled in those files, hwloc will report > errors. Doesn't mean anything is wrong with the hardware at all.
For the record, that's not really true: hwloc looks at /sys (and a bit /proc files), but it also uses cpuid instructions. 90% of the times, the former is better because the kernel already took care of cleaning up the hardware mess and reporting useful/correct info in /proc and /sys. Sometimes the kernel is too old and it misses some hardware quirks (like L1i sharing on Gus' machine) causing /sys files to be incompatible. In the end, the vast majority of problems come from buggy BIOS, and these cause both cpuid and kernel to report invalid info. Aside of upgrading the BIOS, the only solution there is to replace the topology with a correct XML one. Brice
