NAME

       hwloc-dump-hwdata - Dump topology and locality information from hardware tables

SYNOPSIS

       hwloc-dump-hwdata [options]

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.

DESCRIPTION

       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.

       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 on Intel Knights Landing Xeon Phi platforms.

       The current list of dumped information is:

       Intel Knights Landing 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.

SEE ALSO

       hwloc(7), lstopo(1)