hwloc-dump-hwdata − Dump topology and locality information from hardware tables
hwloc-dump-hwdata [options]
|
−o <dir> |
save output files to directory <dir> instead of the default /var/run/hwloc/ that was specified at configure time. |
You may want to set the HWLOC_DUMPED_HWDATA_DIR environment variable as well so that the hwloc library looks for dumped files in that same directory.
|
−−version |
Report version and exit. |
|||
|
−h −−help |
Display help message and exit. |
hwloc may benefit from some locality and topology information from SMBIOS or ACPI tables. They are accessible from raw hardware files under directories such /sys/firmware/dmi/ or /sys/firmware/acpi/ on Linux. These files are usually only accessible to root, and they only exist when there is dmi-sysfs support in the Linux kernel.
The hwloc-dump-hwdata tool dumps the useful contents of such files into human-readable and world-accessible files. The intent is to run the tool once during boot and have the main (non-privileged) hwloc library gather information from these human-readable files.
hwloc-dump-hwdata is currently only useful for Intel Xeon Phi processors (Knights Landing and Knights Mill).
The current list
of dumped information is:
Intel Xeon Phi processor memory, cache and clustering
configuration
gathered from specific SMBIOS entries such as /sys/firmware/dmi/entries/14-* and /sys/firmware/dmi/entries/160-*, and saved in file knl_memoryside_cache.
hwloc(7), lstopo(1)